圆梦计划(重点)复习题集(专升本理科)-2018年教学文案
发布时间:2020-06-19 06:39:30
发布时间:2020-06-19 06:39:30
圆梦计划(重点)复习题集(专升本理科)-2018年
“圆梦计划”复习题集(专升本)
适用专业:计算机科学与技术、会计学、机械设计制造及其自动化、通信工程、电气工程及其自动化、工程管理、国际经济与贸易、工商管理、土木工程
二、大学英语 专升本
选择题
1.Phonetics (5 points)
Directions::In each of the following groups of words,there are four underlined letters or letter combinations marked A,B,C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation. Mark your answer by blackening the corresponding letter on the Answer Sheet.
1. A. come B. some C. move D. love C
2. A. honor B. house C. horror D. heel A
3. A. thief B. think C. theory D. these D
4. A. now B. how C. allow D. window D
5. A. meat B. dead C. cream D. steal B
II. Vocabulary and Structure (15 points)
Directions: There are 15 incomplete sentences in this section. For each sentence there are four choices marked A, B, C and D. Choose one answer that best completes the sentence and blacken the corresponding letter on the Answer Sheet.
6. We asked both John and Jerry, but _____ could offer a satisfactory explanation. A
A. neither B. either C. both D. nor
7. I’d like to find someone _____I can discuss such a problem. C
A. who B. whom C. with whom D. to whom
8. The baby can’t even sit up yet, _____walk! B
A. don’t mention B. let alone C. other than D. rather than
9. I did not notice that my dog was missing _____a moment ago. B
A. before B. until C. to D. On
10. The company director has informed us that we must _____department budge by 25% A
A. cut down B. cut away C. cut off D. cut up
11. Companies usually _____a number of experiments before a new product is launched. D
A. practice B. control C. carry D. conduct
12. I remembered that the air conditioners _____ runed off before left home. C
A. were B. were to be C. had been D. have been
13. -How do you like your new job? B
-well, it’s great _____salary, but it does not offer much prospects for promotion.
A. in change of B. in terms of C. in case of D. in favor of
14. In my opinion, this is a(n)_____different matter. A
A. entirely B. merely C. purely D. fully
15. Take an umbrella with you in case it_____. D
A. may rain B. could rain C. rained D. rains
16. The murderer was brought in, with his hands_____ behind his back. D
A. to have been tied B. having tied C. to be tied D. tied
17.-Do you think Joshua is the right person for this job? C
-He is well-grounded in economic theory, but lacks _____in production management.
A. devotion B. attitude C. experience D. energy
18._____about it earlier, we could have wamed people of the danger. D
A. Would we know B. Should we know C. Have we known D. Had we known
19. It was_____ of you not to disturb these old people late at night. B
A. patient B. considerate C. deliberate D. modest
20. -Hey, what do you think of his speech last night? C
-I have no idea. I arrived_____ find that he had almost finished it.
A. in order to B. so as to C. only to D. ready to
III. Cloze (30 points)
Directions: For each blank in the following passage, there are four choices marked A,B,C and D. Choose the one that is most suitable and mak your answer by blackening the corresponding letter on the Answer Sheet.
What is music? Music is sound arranged into pleasing or interesting 21 . It is part of every culture on Earth. People use music to 22 feeling and ideas. Music also serves to entertain and relax.
Music is a performing art. It 23 form such arts as painting and poetry, in which artists 24 works and then display or publish them. Musical composers need musicians to 25 and perform their works. 26 ,most musical performances are really co-operations between composers and performers.
Music also play a major role in other arts. Opera 27 singing and music with drama. Ballet and other forms of dancing need music to help the dancers 28 their steps. Motion pictures use music to help set the mood as well as introduce the actions or enhance its 29 on the audience.
Music is one of the 30 arts. People probably started to sing as soon as 31 developed. Hunting tools struck together may have been the first musical 32 .By about 10,000 B. C., hollow bones had been used by 33 people to make flutes. The first written music dates from about 2500 B.C.
There are two chief kinds of Western music, classical and popular, Symphonies, operas, and bullets are 34 music, It is generally harder to write and perform. Musicians who perform it need a lot of training. Popular music 35 country music, folk music, jazz, and rock music. It is easier to perform and understand.
21. A. models B. types C. styles D. patterns D
22. A. express B. explore C. cover D. test A
23. A. results B. develops C. differs D. separates C
24. A. discover B. create C. imagine D. invent B
25. A. adapt B. interpret C. follow D. complete B
26. A. Thus B. However C. Besides D. And A
27. A .joins B. associates C. connects D. combines D
28. A. with B. for C. after D. upon A
29. A. force B. effect C. influence D. impact B
30. A. greatest B. easiest C. oldest D. best C
31. A. agriculture B. society C. humanity D. language D
32. A. performers B. events C. instruments D. notes C
33. A. previous B. old C. early D. ancient D
34. A. light B. background C. classical D. experimental C
35. A. accepts B. includes C. explains D. illustrates B
IV Reading Comprehension (60points)
Directions:There are five reading passages in this part. Each passage is followed by four
questions. For each question there are four suggested answers marked A,B, C and D.Choose one best answer and blacken the corresponding letter on the Answer Sheet.
Passage One
What do you use to get around town? A car? A bike? Your feet? Perhaps you should try a Segway!
The Segway is perfect for short journey. It’s an electric vehicle that consists of a platform between two wheels, with a pole that connects the platform to the handlebars. To ride it ,you step up onto the platform, and control the Segway by moving your body. Lean forwards to go faster, and backwards to slow down.
On older models, direction is controlled by a twist grip (扭转把手)on the left handlebar. This varies the speeds between the two motors, a decrease in the speed of the left wheel would turn the Segway to the left .With newer models you simply lean to the left or right. Meanwhile, a gyroscope (陀螺仪)detects your movements and prevents the machine from falling over. The Segway has a maximum speed of 19 km per hour and a range of about 38 km. After that, you need to plug it in and recharge the battery.
Segways are used for a variety of purposes. People with mobility problems can now enjoy walks in the country with their friends and family. Some golfers us them as an alternative to the golf cart. And dog owners now have an easier way to take the dog to the park. A few police forces use Segways, too. They allow officers to move quickly whilst maintaining contact with the public. They’re also becoming a common sight on airport. However, the most popular use is in tourism, particularly for city tours. Visit any major tourist city in summer, sit outside a cafe for a while and there’s a good change you’ll see a group of tourists passing on Segways.
36.What is the Segway according to this passage? D
A.A pole that connects two handlebars
B.A newly appeared public traffic vehicle.
C.A bicycle with a platform between two wheels.
D.An electric two-wheeled vehicle for short trips.
37.How do you turn to the left on Segways of newer models? A
A. Lean to the left. B. Adjust the twist grip.
C. Press the left bar. D. Control gyroscope
38.How far can you travel on a Segway at most? C
A. less than 19 km. B. About 19 km.
C. About 38 km. D. More than 38 km.
39.The last paragraph focuses on______. D
A. what a Segway is like
B. where to find a Segway
C. how to control a Segway
D. when a Segway is useful
Passage Two
Nancy Bright and her husband john had been working overtime and saving for a long time so that they could pay the advance for Nancy’s dream house. Today was the day that they had enough money in hand to make a down payment on the house. But the real estate (房地产)agent informed them that she had received another offer for the house. Although the other offer was slightly less than that of Nancy and john’s, that person with the new offer was willing to pay the whole amount at once. The owner, in urgent need of money, wanted to accept the second offer.
Nancy and john looked at each other with disappointed looks. They walked back home feeling very low about having lost the house. Soon they recovered and involved themselves into their daily lives, though once in a while Nancy would sink into a mild depression over losing the house.
One day Nancy woke up in the morning feeling even lower than usual. She kept feeling sick, even lost interest in her routine coffee. She put all these symptoms down to the stress of working hard and losing her dream house. A weed passed and she seemed to get worse. John was worried and insisted on taking her to the doctor. The doctor, after taking a few tests, informed them with a huge smile that Nancy was two months pregnant! John and Nancy were overjoyed but also worried about not having their own house before the baby was born.
One evening Nancy wandered into the street where her dream house was, and as she passed by it, she was surprised to see that there were notices stuck on all the houses. On closer examination she found that the notices were for all the residents to move out of the houses as they were building a highway and the whole row of houses needed to be pulled down. Nancy suddenly realized that not getting her dream house had been a blessing in disguise. She thanked God and decided to be happy with the blessings blessings she had and started looking forward to the birth of her child.
40.Why did Nancy and her husband lose their dream house? A
A. They couldn’t pay the whole amount for the house at once
B. Someone else offered move money for the house.
C. They couldn’t afford the advance for the house.
D. The house owner decided not to sell the house.
41. How did they feel after they lost their dream house? D
A. They felt sorry and hardly recovered.
B. They felt relieved but with little regret.
C. They enjoyed their daily lives all the same.
D. They were depressed but tried to adjust themselves.
42.What did Nancy find about the house one day? B
A. It would be on sale again B. It would be pulled down
C. It had been redecorated. D. It had been emptied
43.What does the phrase “a blessing in disguise” in the last paragraph mean? A
A. A good luck B.A dirty trick
C. A secret wish D.A false alarm.
Passage Three
Most of the guests who come on our trips have never been to Egypt before. We want to make everyone comfortable and at ease, but we do always get the same questions in advance of trip. So here I will give you some travel tips.
What should I wear?
If you’re lucky enough to visit Egypt between November and February, pack a sweater. You’ll need it 一the desert gets chilly at night. During the day, the temperature will be agreeable and comfortable. Any other time, pack as if you’re going to Phoenix or Vegas in August. For the ladies, bathing suits are normal if there’s a pool where you’re going, but leave the string bikini at home 一it is a Muslim country, after all. Last, if you are planning on visiting any mosques or certain parts of upper Egypt, ladies will need to plan on bringing something that comes at least to the elbow, and no shorts for men or women in those areas.
What special things do I need to pack?
One of my favorite things in the world to bring to Egypt is an Evian Mister, a sprayer with a fine mist of Evian water. You may be able to find it in your local drug store. Spray a little on your face or head, and your body temperature will feel like it’s dropped 10 or 15 degrees. Other items include your camera, sun block and extra batteries.
How do I communicate with home?
Internet cafes are plentiful everywhere, especially in Cairo, Luxor, and Alexandria. If you have international calling on your phone, you should be able to use it 一AT&T and Sprint both work internationally for sure, but make sure you have the international coverage. A satellite phone is best if you are certain to need coverage in the middle of the country. Like while sailing up the Nile, but for most people these days a cell phone is fine.
What medical preparation do I need?
In a word: none! The one thing you may come down with in Egypt is politely called “Pharoah’s Revenge.” The thing that knocks out Pharoah’s Revenge is a regionally produced medicine, and is available at every drugstore for $1a box. DON’T drink local water. DO drink bottled water, avoid the skins of fresh vegetables, and you’ll be fine.
44.What clothing is proper for ladies visiting a mosque? B
A.String bikinis. B.Long-sleeve clothes.
C.Bathing suits. D.Shorts.
45.What’s the use of an Evian Mister? C
A.To relieve your thirst. B.To prevent sunburns.
C.To cool yourself down. D.To drive away insects.
46.What information is provided about distance communication? A
A.A cell phone is enough for most people.
B.AT&T and Sprint offer free service in Egypt.
C.A satellite phone doesn’t work in Mid-Egypt.
D.Internet cafes are only available in big cities.
47.What does “Pharoah’s Revenge” probably refer to in the last paragraph? C
A.A curse. B.A legend. C.A disease. D.A vegetable.
49.Which word best describes the homeless man? B
A.Angry. B.Untidy. C.Sensitive D.Impolite.
50.Why did Robby go back to the hot dog seller? C
A.She wanted to think the hot dog seller.
B.The homeless man asked her for a hot dog.
C.She wanted to buy a hot dog for the homeless man.
D.The hot dog was so delicious that Robby wanted another.
51.What is the theme of this passage? D
A.The rich should help the poor. B. One good turn deserves another
C.Kindness is the greatest wisdom D.A kindness shown, a kindness sown.
Passage Five
Whatever you do, don’t challenge a chimpanzee named Ayumu to a number memory game.
In 2007, Ayumu became famous for his lightning speed at a game that goes like this: A player views a computer screen where the number 1 through 9 appear briefly at once and then tun to white squares. The player then taps the squares where the numbers had been, in order from 1 to 9. People can do it . But no human competitor has ever completed the game faster or more accurately than Ayumu the chimp. For almost five years Ayumu remains undefeated.
Psychologist Nicholas Humphrey of Darwin College at Cambridge University in England now thinks he knows the secret behind the chimp’s ability. Humphrey suspects Ayumu’s brain may have a condition that allows the chimp to see numbers as colors. This would mean that Ayumu may see a color glow after the number disappears. Then, instead of remembering the numbers, he remembers a sequence of colors, each associated with a number.
The condition that Humphrey believes Ayumu may have is called synesthesia. Humans with synesthesia may associate numbers and letters with colors. For example, a person may see the number“5”as the color blue. Until now, scientists and assumed only humans could have synesthesia.
Humphrey found the inspiration for his idea at a 2011 scientific conference. There, he heard a presentation about Ayumu’s memory abilities and another talk about synesthesia. He then put the two ideas together.
Not everyone is convinced that Humphrey is correct. Primatologist Tetsuro Matsuzawa of the Primate Research Institute at Kyoto University in japan has spent decades studying the amazing memories of chimpanzees, including Ayumu. He maintains that chimps simply have faster memory recall than people.
52.What is Ayumu famous for? D
A.His gift in playing computers.
B.His talent in calculating numbers.
C.His skill in tapping the numbered squares.
D.His amazing performance in a memory game.
53.Which of the following is true of Nicholas Humphrey? B
A.He thinks Ayumu has an amazing memory.
B.He believes that Ayumu sees the colors of numbers.
C.He was inspired by Primatologist Tetsuro Matsuzawa.
D.He delivered a speech on synesthesia at the 2011 conference.
54.Where does Humphrey get the inspiration for his idea? B
A.From an experiment. B.From a conference
C.From a research on chimpanzees. D.From the color blue
55.How does Tetsuro Matsuzawa explain Ayumu’s performance in the game? C
A.Ayumu uses synesthesia.
B.Ayumu is cleverer than most chimps.
C.Chimps recall things faster than people.
D.Chimps are good at dealing with number.
V. Daily Conversation (15 points)
Directions: Pick out appropriate expressions from the eight choices below and complete the following dialogue by blackening the corresponding letter on the Answer Sheet.
Mary: Well, Susan, how was your shopping trip with Nancy this afternoon?
Susan: Don’t ask. 56 H
Mary: What do you mean? Something went wrong?
Susan: Went wrong? 57E !Nancy thought I had said I would meet her at the department store at 2:30 when I really said 2:00. Then she thought we would meet at the main entrance in front when I really said at the east entrance on the Twelfth Street.
Mary: 58B ?
Susan:Yes! 59C !I had given up waiting and went inside the women’s clothing department.
So did she. Thus we met finally and it was 3:00 by then.
Mary:Did you get what you wanted? 60 D .
Susan:A blouses,as a matter of fact. But by that time, all those on sale were gone. So I settled for a skirt.
英语试题答案及评分参考
I.Phonetics (5 points, one point each)
1.C 2.A 3.D 4.D 5.B
II. Vocabulary and Structure (15 points, one point each)
6.A 7.C 8.B 9.B . 10.A
11.D 12.C 13. B 14.A 15.D
16. D 17.C 18.D 19.B 20.C
III. Cloze (30 points, two points each)
21.D 22.A 23. C 24.B 25.B
26.A 27.D 28.A 29.B 30.C
31.D 32.C 33.D 34.C 35.B
IV. Reading Comprehension (60 points, there points each)
36.D 37. A 38.C 39.D 40.A
41.D 42.B 43.A 44.B 45.C
46.A 47.C 48.B 49.B 50.C
51.D 52.D 53.B 54.B 55.C
V. Daily Conversation (15 points, three points each )
56.H 57.E 58.B 59.C 60.D
完型填空
(一)
Not all people got their names _1__ their father. Some got their names from the places they __2__. For example, a family that lived in a village __3__ many green trees and plants was called Green or Greenberg. If they lived in a town called Moor, they were __4__ the Moores.
Sometimes people got their names from___5__ they looked. A tall person was, perhaps, called Long. If people in a family had __6__ hair, the family was sometimes called the Blacks or the Browns. If their hair was __7___, they may have been called the Whites.
People often took their names from the kind of __8___ they did. A person who sewed clothing was named Taylor. ___9___ person who baked bread was called Baker. A person who had a very good ___10__ was named Singer.
After a while these names stayed with people and became family names that are still used today.
1. A. after B. out of C with D. from D
2. A. stayed in B. worked for C. lived in D. played at C
3. A. of B. with C. for D. at B
4. A. known B. said C. called D. written C
5. A. the way B. a way C. what D. written A
6. A. light B. heavy C. dark D. soft C
7. A. heavy B. dark C. soft D. light D
8. A. subject B. work C. major D. course B
9. A. Another B. Other C. Others D. A D
10. A. brain B. voice C. body D. name B
(二)
When we say that Cambridge is a university town we do not mean just that it is a town __1__ a university ___2__ it. Manchester and Milan have universities, but we do not call them university towns. A university town is one where there is no clear separation ___3__ the university buildings and the rest ___4__ the city. The university is not just one part __5__ the town; it is all___6__ the town. The heart ___7__ Cambridge has its own shops, pubs, market place and so on, but most ___8__ it is university-colleges, all the teachers, libraries, clubs and other places __9___ university staff and students. Students fill the shops, cafes, banks and churches, making these as well part ___10__ the university.
1. A. in B. outside C. with D. behind C
2. A. of B. in C. at D. before B
3. A. between B. over C. among D. above A
4. A. through B. near C. of D. about C
5. A. in B. out of C. towards D. of D
6. A. around B. over C. across D. behind B
7. A. to B. of C. inside D. like B
8. A. of B. from C. on D. by A
9. A. to B. for C. in D. about B
10. A. in B. of C. for D. with B
(三)
All the useful energy at the surface of the earth comes from the activity of the sun. the sun heats and feeds mankind. Each year it __1__ men with two hundred million tons of grain and___2__ ten million tons of wood.
Coal, oil, natural gas, and all other __3___ are stored-up energy from the sun. It was collected by the plants as carbon compounds and stored __4__ ago.
Even waterpower comes from the sun. Water ___5_ into vapor by the sun falls as rain. It runs ___6__ the mountains and is converted to electric power.
Light transmits only the energy __7___ comes from the sun’s outer layers, and ___8__ of this energy that is directed toward the earth never arrives. About __9___ of it is absorbed by the atmosphere of the earth. In __10___, the earth itself gets only one half-billionth of the sun’s entire output of radiant energy.
1. A. gathers B. produces C. provides D. sends C
2. A. hardly B. merely C. really D. nearly D
3. A. fuels B. solids C. soils D. materials A
4. A. years B. ages C. times D. generations B
5. A. turns B. turning C. turned D. is turned C
6. A. up B. down C. around D. into B
7. A. that B. what C. where D. because A
8. A. little B. a little C. much D. few C
9. A. nine-ten B. ninth-tenth C. nine-tenth D. nine-tenths D
10. A. place B. fact C. form D. part
(四)
On Monday afternoon Mrs. Joan, dressed for going out, took her handbag with her money and her key in ___1__, pulled the door__2__ her to lock it and went to the Over 60s Club. She always went there__3__. It was a nice outing for an old woman who lived __4__.
At six o’clock she came home, let __5__ in and at once __6__ cigarette smoke. Cigarette smoke in her house? How? Had someone got in? She __7__ the back door and the windows. All were ___8__ or fastened, __9__ usual. There was no __10__ of forced entry.
1. A. it B. its C. her D. hers
2. A. in front of B. beside C. behind D. before
3. A. Monday B on Monday C, Mondays D. on Mondays
4. A. single B. lonely C. alone D. only
5. A. she B. her C. hers D. herself
6. A. smell B. smelling C. smelled D. smelt
7. A. notice B. saw C. checked D. looked through
8. A. locking B. locked C. closing D. closed
9. A. like B. look like C. as D. the same as
10. A. sight B. sign C. scene D. signs
答案:
(一)1-5:DCBCA 6-10:CDBDB
(二)1-5:CBACD 6-10:BBABB
(三)1-5:CDABC 6-10:BACDB
(四)1-5:ACDCD 6-10: DCBCB
阅读:
Passage One
Of all the animals in the animal kingdom, which one (aside from man) is the cleverest?
There are several ways of measuring the intelligence of animals. In one test some scientists set three identical cans on a table. While an animal watches, he puts food under one of the cans. Then he leads the animal away. Some time later, he brings it back to see if it remembers which can has the food. No smelling is allowed; the animal must go to the correct can or it fails.
This is called a delayed-response test. The idea is to find out how long an animal’s memory can keep the information. The scientists would try showing the cans to the animal an hour later, or two hours later, or even a full day later. They discovered that chimpanzees(黑猩狸)and elephants have the best memory, and are able to remember the correct can for at least twenty hours. No other animal is close. Dogs come next, but they only remember for nine hours.
To settle the matter, the scientists designed a huge maze(曲径,迷宫)and ran the chimpanzees and elephants through it. The maze was very difficult, with many blind paths and dead ends. It took the chimpanzees ten minutes to find their way out. The elephants needed a half hour. Even allowing for the elephants slower rate of speed, the test shows that chimpanzees are the cleverest animals.
From this and other tests, the scientists drew the following conclusion: an animal’s intelligence depends on the size of its brain in proportion to (与……成比例)the size of its body. The elephant’s brain weighs ten pounds. But this is only 1/600th of its 6,000-pound body weight. So in proportion to its body size, the chimpanzee has four times as much brain as the elephant, thus more brain for less body.
1. The main idea of this passage is that ______.
A. there are several ways of measuring the intelligence of animals
B. chimpanzees and elephants have the best memory
C. intelligence tests show that the chimpanzee is the cleverest animal
D. the scientists designed a huge maze and ran the chimpanzees and elephants through it
答案:C
题型:单选
1. The delayed-response test is designed to test an animal’s ______.
A. eyesight
B. intelligence
C. learning ability
D. memory
答案:D
题型:单选
1. The passage tells that elephants ______.
A. never forget things
B. are more clever than chimpanzees
C. are more clever than chimpanzees
D. have better memories than chimpanzees
答案:C
题型:单选
1. Which of the following animals is NOT mentioned in this passage?
A. Elephant.
B. Dolphin.
C. Chimpanzee.
D. Dog.
答案:B
题型:单选
1. What does an animal’s intelligence depend on?
A. The size of its brain in proportion to the size of its body.
B. The size of its body.
C. The size of its brain.
D. The place an animal lives in.
答案:A
题型:单选
Passage Two
The existing oil resources will not last very long. This means that all vehicles such as cars, trains, buses, planes and ships that need oil to work will not be able to run. So it will be necessary to develop a new system of transport which uses a fuel other than oil. Electric vehicles are one possibility. In Britain, most families have at least one car and this car is used everyday. It could be that only one person in the family drives the car to work or for shopping. The number of cars on the road which are almost empty perhaps helps to explain why the oil is used up so quickly. The family car is a very useful form of transport but it is also a great waster of energy, especially if it is compared with buses or trains which use less petrol per person than a car; this also wastes fuel. A car traveling at 80 kilometers an hour uses only half as much petrol as a car running at 120 kilometers an hour. Clearly, it would be better if there were fewer cars on the road and more speed limits so that the oil which is left will last as long as possible.
About 25% of Britain’s total consumption(消耗)of energy is domestic -- it is used only in the home. Just over 20% is used for transport. Most of the energy is used in industry. It is difficult to suggest any possible energy conservation in industry because many of the suggestions would mean that some people would lose their jobs. It is important that industry produces the same amount of products using the same amount of workers.
Obviously, conservation is not going to be the answer to the energy crisis. The most it can do is to give more time for a better solution to be found. The more time which is available for new sources of energy to be developed, the better it is because there is still a lot of work to be done in order to find suitable, safe methods of producing energy.
6. According to the passage, all vehicles that need oil to work will not be able to run because ______.
A. they will be replaced by electric vehicles
B. oil resources will be used up very soon
C. the transport system for them is too old
D. these vehicles cannot use the new fuel
答案:B
题型:单选
7. In Britain, most families have at least one car and ______.
A. only one person is allowed to drive this car
B. this car is efficiently used
C. this car is not efficiently used
D. this car is a great waster of energy
答案:C
题型:单选
8. It is implied that to save our precious oil, drivers should limit their speed ______.
A. as much as possible
B. to no more than 80 kilometers an hour
C. to no more than 100 kilometers an hour
D. to no more than 120 kilometers an hour
答案:B
题型:单选
9. According to paragraph 2 in this passage, more energy conservation in industry means ______.
A. fewer job opportunities
B. more job opportunities
C. less domestic oil consumption
D. more products
答案:A
题型:单选
10. What is the best way to solve the energy crisis?
A. Government should cut down the number of family cars on the road.
B. The speed of vehicles must be limited.
C. New resources of energy should be found and developed.
D. Factories should cut down on production.
答案:C
题型:单选
Passage Three
“Fire! Fire!” What terrible words to hear when one wakes up in a strange house in the middle of the night! It was a large, old, wooden house and my room was on the top floor. I jumped out of bed, opened the door and stepped out into the passage. It was full of thick smoke.
I began to run, but as I was still only half-awake, instead of going towards the stairs I went in the opposite direction. The smoke grew thicker and I could see flames all around. The floor became hot under my bare feet. I found an open door and ran into a room to get to the window. But before I could reach it, one of my feet caught in something soft and I fell down. The thing I had fallen over felt like a bundle of clothes, and I picked it up to protect my face from the smoke and heat. Just then the floor gave way under me and I crashed to the floor below with pieces of burning wood all around me.
I saw a flaming doorway in front, put the bundle over my face and ran. My feet burned me terribly, but I got through. As I reached the cold air outside, my bundle of clothes suddenly gave a thin cry. I was taken aback and nearly dropped it. then I saw a crowd gathered in the street. A woman in a nightdress and a borrowed man’s coat screamed as she saw me and came running madly.
“My baby! My baby!” she cried. The crowd cheered wildly as she took the smoke-blackened bundle out of my arms. I had some difficulty in recognizing her. She was Mayor’s wife, and I had saved her baby. I was a hero.
11. When the author found that the house was on fire he got out of bed and ran in the wrong direction because ______.
A. he was in great horror
B. he was still half-asleep
C. this was the only way out
D. the smoke was too thick for him to see clearly
答案:B
题型:单选
12. Which of the following statements is true according to the passage?
A. The man was a guest living in that house.
B. The man was the only one trapped in that burning house.
C. The man was saved before the house was burned down..
D. The man was welcomed by a crowd of people when he came out of the house.
答案:A
题型:单选
13. The expression gave way in paragraph 2 means ______.
A. collapsed
B. loved music
C. crashed
D. burned away
答案:A
题型:单选
14. When the bundle of clothes, which he used to protect his face, gave a weak cry the author ______.
A. was greatly ashamed
B. was very excited
C. was greatly surprised
D. was very pleased
答案:C
题型:单选
15. This story is about ______.
A. a man who bravely rescued a baby
B. a man who lived on the top floor of a strange house
C. a man who tried hard to escape from a fire
D. a man who saved a baby by accident
答案:D
题型:单选
Passage Four
Passage Five
三、高等数学 (专升本)
试 题 一
1-1.函数5f97a9948de363885c59b9641e87ba7d.png
A.a812aeae0066bffa22eeebafdbb475cf.png
2-1.函数7b651b4f1e3cd8f7fef50c2408973a3f.png
A.11dfe4c5acd23f2207cd2eb2ce7ac6e8.png
3-1.cd1f0af211e7fb5b7489f21337530118.png
A.0; B.c4ca4238a0b923820dcc509a6f75849b.png
4-1.当e0e6ca4669b2f86a31cda853ea5f1f37.png
A.37851bde5c6a3f825ce1266109a7d29c.png
5-1.设函数7fb4f5500a03c4f756922c77fb8c41a7.png
A.ebfcdcee01845eb7db4a1394d9c60072.png
6-1 函数7c1c9491ba7c6e8d6d2cfa82e39b22ca.png
A.必要条件; B.充分条件; C.充要条件; D.无关条件.
7-1 设函数50bbd36e1fd2333108437a2ca378be62.png
A.d267392b36cc3ca35802359790ea76e6.png
8-1.设63aec8c62675c70b8fcb2e6f5b132385.png
A.768a1ed60006f190faf91d734c1c8236.png
9-1 设cab6d0a6cf84ed54aa3c6dbd371cedea.png
A.768a1ed60006f190faf91d734c1c8236.png
10-1 59f13b28f535859bbd8216170c6b0c8f.png
A.bcb5585525348a4cf25a8713cf427026.png
11-1 设0ece9d156a14142d35a6eaf3458800c5.png
A.54b8c3a87deab22ffa709585f2ffb861.png
12-1 97a8968333e40472d9f2709044bd45b7.png
A.7964c6a339acf2ddea25a5ef0552b97e.png
13-1.曲线1bdf377d88d57a0817ec840ce5ce05ad.png
A.设有渐近线; B.仅有水平渐近线; C.仅有铅直渐近线; D.既有水平渐近线,又有铅直渐近线.
14-1 设50bbd36e1fd2333108437a2ca378be62.png
A.31f13a5bcca16f67072757ae6646c89f.png
15-1 若d41d8cd98f00b204e9800998ecf8427e.png
A.007ca874a955fbc8d1e0e4a91f54719b.png
16-1 设函数50bbd36e1fd2333108437a2ca378be62.png
A.50bbd36e1fd2333108437a2ca378be62.png
17-1 f8de35fc95ca140dd995373f4eb7e89b.png
A.1; B.768a1ed60006f190faf91d734c1c8236.png
18-1.ff862085bfe8970a78305992112d15c7.png
A.1; B.0; C.768a1ed60006f190faf91d734c1c8236.png
19-1 由曲线c0fffc8747dc974e1f19eac7a4e8e212.png
A.65c884f742c8591808a121a828bc09f8.png
20-1 函数decafac26753cc68a72b3ead5d48c1ee.png
A.c81e728d9d4c2f636f067f89cc14862c.png
21-1 设5dbee44c81da258998177fb56cee387c.png
A.cfcd208495d565ef66e7dff9f98764da.png
22-1 设9512e971aacc735d629b2cdbd14bf10c.png
A.3c2d567a7cae4020ee216f89c26cf258.png
23-1 设f623e75af30e62bbd73d6df5b50bb7b5.png
A.3b4c00946d2b737379eb04023414466e.png
24-1设f623e75af30e62bbd73d6df5b50bb7b5.png
A.6c2e3e2e98abd1fd9a66519db9da8d90.png
25-1 设f623e75af30e62bbd73d6df5b50bb7b5.png
A.c4ca4238a0b923820dcc509a6f75849b.png
26-1、 eef246f3ff3df2ca4bd36d9520dffcbd.png
(A)6d1a6127d3610e7b68659478ed0c2ae2.png
27-1、 设函数a9718c767939124c102a8187af06c09a.png
(A)5cffa5d7a0c145a80dee9dc2295d5cdf.png
试 题 二
1-2.函数3b43bf8fbf723ee4baef9b723c15071b.png
A.d1f4372ca07aff2ab405b5c6b38be364.png
2-2.已知b99e2e84dc12488f2cfff9219fcda3f3.png
A.a7a9b226d9e2a440159331cfc1986a57.png
3-2.7f1ed02e3b80843c320b880d38ef2993.png
A.1; B.768a1ed60006f190faf91d734c1c8236.png
4-2.当6500d9fb1e9d317f5193d3961ddaa958.png
A.无穷小量; B.无穷大量; C.无界变量; D.有界变量.
5-2 设函数2b95e6dd9368deb1b2d14aeb896a6fec.png
A.d1feae04f5760387882725cb30731bbf.png
6-2.函数b25809716967845ac30e2439228556d5.png
A.d3162f19991cb690ec59f78f93071b2d.png
7-2 设函数50bbd36e1fd2333108437a2ca378be62.png
A.d267392b36cc3ca35802359790ea76e6.png
8-2.设1ff1520eb9a2d364c96d1af8b15f1fd4.png
A.9530ce6770dea91f62194b7d6f3814ce.png
9-2 2b86a9388185c71c0ffd5ee4bf018434.png
A.71d828ce9bcee7aca5bcf44378ec6534.png
10-2 设cfa153f7a52a968500c4d75f76735154.png
A.acd2b09d39705a84bff035c18c9faea9.png
11-2 设4c4759acad677df06b2dc6a405d6ba50.png
A.7d6befb5f2ad4d5be5794851f778900d.png
12-2 f5d42e98dfa636c2ea68a32b71dd92c7.png
A.cfcd208495d565ef66e7dff9f98764da.png
13-2 曲线e9d3feb238640b4f7b872c8a07a7bf78.png
A.1条; B.2条; C.3条; D.4条.
14-2 设50bbd36e1fd2333108437a2ca378be62.png
A.50bbd36e1fd2333108437a2ca378be62.png
15-2 设d41d8cd98f00b204e9800998ecf8427e.png
A.14815cbf17d1ea5e8d7bb1f423426e22.png
C.11e6ebc1db874b11157fcc2aff879b66.png
16-2 8407b679ab188481df6171ed26f447cd.png
A.510e0dbcec6c3bc54709f5b0e364a2e8.png
C.4508ba30e9c6caa62e3c7ab9f80d3d81.png
17-2 491780b790949720473b331c4f0b22d3.png
A.1; B.768a1ed60006f190faf91d734c1c8236.png
18-2 cc16a36ff982d7d6a9aebc019ba490e2.png
A.1; B.7ddf743a44884d9bbc8c1789b835ac41.png
19-2 由曲线d491deb0e1ea2c2ecedb61b80e86b0b9.png
A.93b05c90d14a117ba52da1d743a43ab1.png
20-2 函数8b7eefbd08612b47122101b358c6ecf8.png
A.a87ff679a2f3e71d9181a67b7542122c.png
21-2 设11d67b7b67af17160511c7e07fe956e6.png
A.db42dadb7ca9e782730305cebb2b2853.png
22-2设06b57f997cbf4a4b0e877aa94b95f9ef.png
A.b43055d496cb8e22dc7feac17b0c80ac.png
23-2 设f623e75af30e62bbd73d6df5b50bb7b5.png
A.7837881711ebad1049605ab3389a452c.png
C.47064082d3c24717ac967491eb25a527.png
24-2 设f623e75af30e62bbd73d6df5b50bb7b5.png
A.f668c838d12761edf517e0b50418a2c7.png
25-2 设f623e75af30e62bbd73d6df5b50bb7b5.png
A.eca3bf81573307ec3002cf846390d363.png
26-1、设函数c0d8d80f3d444aa8881aa7ed2821c041.png
(A)6 (B)030cf7bc49be15e8119c06d3d152762a.png
27-1、函数b40c06ef8048333226b7c6673d8b3591.png
(A)单调增加 (B)单调减少
(C)先单调增加,后单调减少 (D)先单调减少,后单调增加
试 题 三
1-3 函数05942667b980c80251b689e75188b579.png
A.045f3cae143bd0e6c78089bbb1dbf6fd.png
C.a8ef1d853fb03a61cbbff7ccf36fa77e.png
2-3.已知9f4fa2fb484019b7c16b9c3b2c20bbfe.png
A.5da5cddbbcd445e31e2c644585a748f7.png
3-3.21b65029a2aa7a0601f7e8220a14eee9.png
A.0; B.c4ca4238a0b923820dcc509a6f75849b.png
4-3 下列极限中存在的是 (C)
A.f458dfa9c1729054a1ebf8aa0a8e0d46.png
5-3 设函数b725b8240e9fa12faf4f414c811a82d4.png
A.a9b60edfbc89649206e22a2cad65c588.png
6-3 函数a72f2b8976c37cc6841085d81f61070e.png
A.左连续; B.右连续; C.连续; D.左,右皆不连续.
7-3 设函数04298b37d025a605042569059f0c5ae3.png
A.可导; B.连续但不可导; C.不连续; D.无定义.
8-3 设178f3cca1aab80db7a4f8adf0d53206c.png
A.441c5c4c61d64efc0162beb1768c1de7.png
9-3 设415290769594460e2e485922904f345d.png
A.768a1ed60006f190faf91d734c1c8236.png
10-3 设84dd89e1ab76b9ca999f8fd56448c10a.png
A.56f1ed54942dc3cc804609149640e625.png
11-3 设6f837868084021e4e1f73f12bf1c7651.png
A.91fcee41f26ffd753e54dc9dba244363.png
12-3 f14e583c4ec2c6c9814f6fbd4d65786a.png
A.6ca8c824c79dbb80005f071431350618.png
13-3 已知函数50bbd36e1fd2333108437a2ca378be62.png
B.0bbcaf3f1a7e30c9240b9ed39ee7c78d.png
C.53758a4c7d71e03af20f7d08fadde6e1.png
D.0bbcaf3f1a7e30c9240b9ed39ee7c78d.png
14-3 若08e66d632e5e05b5f5875e179ea84db0.png
A.432041754a17c0e9e951266a59451089.png
15-3d41d8cd98f00b204e9800998ecf8427e.png
A.40c0b0ec5051c48341e16fc6cb7d00ac.png
C.1b30b7197c12058bf0ad05f837dc12ae.png
16-3 设5e58016573388b1d3a5f30d8a8f7a947.png
A.02e3c1cfd03c87011d3b438dee3b08c4.png
17-3 dea798573e37018f66be52df5bbaa715.png
A.9df743fb4a026d67e85ab08111c4aedd.png
18-3 设7729ade54d6b61632b584dec78f04d42.png
A.2; B.02e3c1cfd03c87011d3b438dee3b08c4.png
19-3 由27f057a27bc2d2b65a4f4f2eda67ee36.png
A.1cc38521b6d6681ef13c5f5e73eadff5.png
20-3 函数4f81dad561b142f3ff9c41d16b865680.png
A.a8e26d981f21150b88c63a0460ac2923.png
21-3 设1333ff2bb853c5a69baae006d2110e0b.png
A.1679091c5a880faf6fb5e6087eb1b2dc.png
22-3 设bf3c104e2c1f7f8cb8867c7f54819b25.png
A.217454100e0661a8bc0f7c0b942f6307.png
C.8f22a7672103477eb0b8b7995d112055.png
23-3 设f623e75af30e62bbd73d6df5b50bb7b5.png
A.b41334bb894322becaac23d66958ed9b.png
C.16e2706fed30b2a260efc1a4276d3a00.png
24-3 设f623e75af30e62bbd73d6df5b50bb7b5.png
A.c4ca4238a0b923820dcc509a6f75849b.png
25-3 设50bbd36e1fd2333108437a2ca378be62.png
A.83e990973ec3139dc171066fce9f6ac1.png
26-1、f207dcb3e3412f06eb20849b892c1efd.png
(A)483dcf92dd5d6ca7903363b912c70cda.png
27-1、 b31d83f406bc82e04774398da7d7a252.png
(A)9785a3b261f9da08bebd0de7f6f13b5f.png
(C)720219d4e638133c413d3e44bda0fe5b.png
试 题 四
1-4 设函数f (x)的定义域为668c7b55a37300c330dcd565d9e076da.png
A.22e60b1c975762533f4017962574ccd3.png
C.668c7b55a37300c330dcd565d9e076da.png
2-4.设a80b7ffa2b62f1e7880f139bf9a629d1.png
A.16768d692c9827d5940b8a55b842f140.png
3-4.a10f74a56e4cca6b14694ace8eeb318b.png
A.0; B.7964c6a339acf2ddea25a5ef0552b97e.png
4-4 若2345cb290bb8153572795c194ae622e7.png
A.1f4ad322d55ad71598ebf317513a771c.png
C.81b8f38f96a2f2115ff0968e2e834ae3.png
5-4.设函数ab6321ab9bf776f943d9f975e09953e7.png
A.e829777ab97c93ef78b95b37ec071e96.png
6-4 设函数50bbd36e1fd2333108437a2ca378be62.png
A.d267392b36cc3ca35802359790ea76e6.png
7-4 设函数da62fd8d3dea21aee8a5d353d2857ec2.png
A.可导; B.连续但不可导; C.不连续; D.无定义.
8-4 设e5cebfc091bf987e131a0ebc7beb91ef.png
A.47b0a177f534b9c82f3f0fae70d7d753.png
9-4 设231db8fac1c85630fef0f6b67ba37eb0.png
A.c6c60115541a3b36e2cc3f80ca5b9c99.png
10-4 已知514b7fdba01e98124dd535cfa92699aa.png
A.7ca7043ee76af2df4afbf760aff0ab8d.png
11-4 设003e9d65b022ef7d0aad56c625d154f7.png
A.d57e47317c9e90e9448ded59f5ce3ece.png
12-4 458dadd40a538b1da7d0a74db04d9b6e.png
A.11bf4aa6706937636de8b6ebb7fc3a92.png
13-4 曲线d0c9fbe3fd6d159ce02365d9f903a932.png
A.0; B.1; C.2; D.3.
14-4 若d41d8cd98f00b204e9800998ecf8427e.png
A.9785a3b261f9da08bebd0de7f6f13b5f.png
15-4 0619a1ff71b678b003a95f3ebb11e666.png
A.8ef7575412931909b4985a78f55416fc.png
C.012efb547cc5fd719543e9d7b6e981e4.png
16-4 设9b6255b53ab6a07c64502c3df5838bdc.png
A.3d045bb759093e3210c5fd791a3e9f43.png
17-4 06dfc6b7b4b469128543952c0c56c6d2.png
A.45c48cce2e2d7fbdea1afc51c7c6ad26.png
18-4 01384f92157292b6c20bfa31113bbe05.png
A.93b05c90d14a117ba52da1d743a43ab1.png
19-4 由曲线b98b6333795280e916dc0f27135f522d.png
A.eca3bf81573307ec3002cf846390d363.png
20-4 函数90c9e348d85515af9de8210c985e32f2.png
A.c4ca4238a0b923820dcc509a6f75849b.png
21-4 设4fa153d3317ba9dc440b478f9357ade7.png
A.cd336a227c11449f2fdd13aaa3369168.png
22-4 设a61b59954872c131ecf4544c55ac5148.png
A.aad1fb83bb3e0e07531080e6e324414d.png
23-4 设f623e75af30e62bbd73d6df5b50bb7b5.png
A.287352773b22e98f00f41a9b08c24806.png
C.bd10f6bee9e424a6bd36678f2150e1e7.png
24-4 设f623e75af30e62bbd73d6df5b50bb7b5.png
A.c9f0f895fb98ab9159f51fd0297e236d.png
25-4 设f623e75af30e62bbd73d6df5b50bb7b5.png
A.c81e728d9d4c2f636f067f89cc14862c.png
26-1 曲线12cefc7b397e92622deb1843593f2ce3.png
(A)2 (B)4 (C)6 (D)8
27-1 设函数8b722f8181329d58ed323896f50937e2.png
(A)63a9cfd599566ee43a5ab82ef7699074.png
试 题 五
1-5.设函数a37752e9c894f177dde18b3c2560cd74.png
A.76fb80039d6b5bd34b013434bbe3cbaa.png
2-5.函数447ce721b91100d103620dac5452b495.png
A.单调减少; B.单调增加;
C.先单调增加后单调减少; D.先单调减少后单调增加
3-5. cd1f0af211e7fb5b7489f21337530118.png
A.0; B.c4ca4238a0b923820dcc509a6f75849b.png
4-5 下列变化过程中不能使函数b4005dafae062729ea0ce9546aca660b.png
A.c3becc575b4c9df99e99068f375e24d7.png
5-5 设函数5e190f77eed8c8d8f7364a7164e9c154.png
A.13e7dc67883c56d929c5c602c95a3705.png
6-5.函数ab8618cc73e77c63b1f59b7368fa9f01.png
A.设有零点; B.有一个零点; C.有二个零点; D.有无穷个零点.
7-5 设函数5e454a24c71a6a0a8299dc6f78062c0a.png
A.导数不存在; B.导数为768a1ed60006f190faf91d734c1c8236.png
8-5 设d53618ad613a5d4a1881a5a5d08c8096.png
A.820495f6774fc5f0ed864293e0a3ed25.png
9-5 设函数055e747667972351798d1c1f672796f1.png
B.1; C.3; D.8ca9318120d1a3ed802c611965821210.png
10-5 设50bbd36e1fd2333108437a2ca378be62.png
A.55f427d20a48aeaeb80b741ba1b8274c.png
C.2c962be1a1a2b2f7da979efc2d5427a8.png
11-5 设4c4759acad677df06b2dc6a405d6ba50.png
A.7d6befb5f2ad4d5be5794851f778900d.png
12-5 a261acb4bfbfb10344762c141427cebc.png
A.不存在; B.cfcd208495d565ef66e7dff9f98764da.png
13-5 若d41d8cd98f00b204e9800998ecf8427e.png
A.无实根; B.有唯一实根; C.有三个不同实根; D.有五个不同实根.
14-5 若d41d8cd98f00b204e9800998ecf8427e.png
A.9785a3b261f9da08bebd0de7f6f13b5f.png
15-5 设d41d8cd98f00b204e9800998ecf8427e.png
A.57e787b0478207c51ec081f01cb955bc.png
C.add4bb8cd3f89b1672840595d3b17ba7.png
16-5 设1e71132d8d13cb0c3060673f87f2bbeb.png
A.7fdfa10e565c8f9b608c489cd7779d12.png
17-5. ff862085bfe8970a78305992112d15c7.png
A.02e3c1cfd03c87011d3b438dee3b08c4.png
18-5 566347dfdb80a964ac0a517d5b2ea8c6.png
A.0; B.93b05c90d14a117ba52da1d743a43ab1.png
19-5 由曲线db95d769ea7ddbf468ced3b7311070cf.png
A.2230fb59d264a29c7457db9086731b11.png
20-5 函数b32e108c6e156d58d166245a460e8740.png
A.34ee0d866a9b16250a8dfa9301299290.png
21-5 ade251f1a3c3b479a83cf0c0f04f2d07.png
A.4df63d13a4c4103afcf1f449d09b8b4b.png
22-5 函数1159dc02b1de50ab5e28e3020fa4e33b.png
A.cfcd208495d565ef66e7dff9f98764da.png
23-5 设f623e75af30e62bbd73d6df5b50bb7b5.png
A.1084092362e64a32380df415f50dcfb5.png
C.d25250af3c33aeea651276c677d8019b.png
24-5 设f623e75af30e62bbd73d6df5b50bb7b5.png
A.4cb621ca2d7cafe1f74829fae6cbfea7.png
25-5 设f623e75af30e62bbd73d6df5b50bb7b5.png
A.2e0c4e702f51434b1737a324757695ca.png
26-1、设函数53c0f9e5a8a49cfd547f2f5894d1978b.png
(A)5cffa5d7a0c145a80dee9dc2295d5cdf.png
27-1、设A,B是两随机事件,则事件A-B表示 C
(A)事件A,B都发生 (B)事件B发生而事件A不发生
(C)事件A发生而事件B不发生 (D)事件A,B都不发生
选择题
1.函数的定义域是. 答案:A
A.正确 B.不正确
2.极限. 答案:A
A.正确 B.不正确
3.定积分. 答案:B
A.正确 B.不正确
4.函数在点处连续. 答案:B
A.正确 B.不正确
5.函数在区间内单调减少. 答案:A
A.正确 B.不正确
6.函数在处取得极小值.
A.正确 B.不正确
答案:A
7.函数在点处连续.
A.正确 B.不正确
答案:B
8.函数在点处可导. 答案:B
A.正确 B.不正确
9.是周期函数. 答案:A
A.正确 B.不正确
10.函数在点处连续. 答案:A
A.正确 B.不正确
11.函数的定义域是.
A.正确 B.不正确
答案:A
12.函数在点处可导.
A.正确 B.不正确
答案:A
13.定积分. 答案:B
A.正确 B.不正确
14.定积分.
A.正确 B.不正确
答案:B
15.函数的定义域为(,).
A.正确 B.不正确
答案:A
16.不定积分,其中为任意常数.
A.正确 B.不正确
答案:B
17.极限. 答案:B
A.正确 B.不正确
18.极限. 答案:A
A.正确 B.不正确
19.设函数,则.
A.正确 B.不正确
答案:B
20.设函数,则.
A.正确 B.不正确
答案:B
21.是偶函数. 答案:B
A.正确 B.不正确
22.是内的单调函数.
A.正确 B.不正确
答案:B
23.设函数,则.
A.正确 B.不正确
答案:A
24.设函数,则.
A.正确 B.不正确
答案:A
25.极限.
A.正确 B.不正确
答案:A
26.不定积分. 答案:A
A.正确 B.不正确
27.设函数,则.
A.正确 B.不正确
答案:A
28.极限.
A.正确 B.不正确
答案:A
29.是一阶线性微分方程.
A.正确 B.不正确
答案:A
30.不定积分.
A.正确 B.不正确
答案:A
31.不定积分.
A.正确 B.不正确
答案:B
32.设函数,则.
A.正确 B.不正确
答案:B
33.函数在点处取得极值.
A.正确 B.不正确
答案:B
34.设函数,则. 答案:A
A.正确 B.不正确
35.设函数,则. 答案:B
A.正确 B.不正确
36.函数是微分方程的解. 答案:B
A.正确 B.不正确
37.设函数,则.
A.正确 B.不正确
答案:B
38.函数是微分方程的解. 答案:A
A.正确 B.不正确
39.函数是微分方程的解. 答案:B
A.正确 B.不正确