人教新目标英语八年级上册Unit6--7单元试题(含答案)

人教新目标英语八年级上册Unit6单元检测题一、选择题1．We are going to the party ____________next week．A．in B．on C．×D．for2．—________________are you going to do？—I'm going to fly a kite．A．Where B．What C．How D．Why3．Why not ________________to the city？A．go B．going C．to go D．goes4．Lin Tao and Ling Hai __________________a swim tomorrow．A．are going to has B．is going to haveC．are having D．are going to have5．Does Jim want _________________the first one to get to the top of the mountain？A．to B．to be C．being D．be6．—________________are we going there？—Let's go there by bike．A．How B．What C．Where D．Why7．It's six o'clock now．It's time__________________．A．get up B．got upC．to get up D．getting up8．Both Kate and I________________ ready for the picnic now．A．is not B．is gettingC．are getting D．am getting9．Do you think _________________an English film tomorrow night？A．is there B．there is going to haveC．there is going to be D．will there be二、句型转换1．She is going to do some shopping．(对画线部分提问)________________________________________________________2．My father is going to the Great Wall．(对画线部分提问)________________________________________________________3．I'm writing a letter now．(用tomorrow morning改写句子)________________________________________________________4．He is coming back next week．(对画线部分提问)________________________________________________________5．They're going to have some classes next week．(改为一般疑问句)________________________________________________________三、完形填空It is__1__o'clock．The children__2__to school by car every day．__3__today they are going to school on__4__．It is ten o'clock．Mrs Sawyer usually__5__at home in the morning，but today she is going__6__．It is four o'clock in the afternoon．Mrs Sawyer__7__tea__8__the living room．But this afternoon she is drinking__9__in the garden．It is six o'clock in the evening．The children usually do their__10__．But __11__they__12__in the garden．It is nine o'clock．Mr Sawyer usually__13__his newspaper at night．But he__14__his newspaper tonight．At the moment he is reading__15__interesting book．1．A．at eight B．in eight C．eight D．the eight2．A．go B．goes C．is going D．are going3．A．And B．But C．Or D．So4．A．feet B．their feet C．foot D．the foot5．A．lives B．live C．stays D．stay6．A．the shops B．shop C．shopping D．shops7．A．drink usually B．usually drinkC．drinks usually D．usually drinks8．A．at B．on C．in D．of9．A．a tea B．tea C．teas D．the tea10．A．homework B．homeworksC．the homework D．the homeworks11．A．in the evening B．at this eveningC．this evening D．on the evening12．A．play B．are playing C．are play D．plays13．A．sees B．reads C．looks D．watches14．A．doesn't read B．doesn't look C. isn't reading D．isn't looking15．A．an B．a C．the D．／四、阅读理解AJenny began to go to school when she was at the age of six．She liked her first day very much．Her teacher，Miss Black，was very nice，too．At the end of the second day，the other children left the classroom after school，but Jenny stayed behind and waited．At first，Miss Black had some work to do and did not see Jenny，but then she looked up and saw her．“Why not go with the others，Jenny？”she asked her kindly，“Did you want to ask me some questions？”“Yes，Miss Black，”Jenny said．“What is it？”Miss Black asked．“What did I do in school today？”Jenny said．Miss Black laughed，“What did you do in scho ol today？”she said，“Why did you ask me that，Jenny？”“Because I'm going home now，”Jenny answered，“and my mother's going to ask me．”1．Jenny went to school_________________．A．when she was too oldB．when she was at the age of sevenC．when she was six years oldD．when she was old2．The second day，Jenny didn't go with__________________．A．her teacher B．her classmatesC．her mother D．her father3．Why did Jenny stay behind and wait after school？Because she________________．A．had some homework to doB．waited for her motherC．Waited for her teacher to comeD．wanted to ask her teacher a question4．What question did Jenny ask her teacher？A．What did you do in school today？B．Did you want to ask me some questions？C．Why didn't you go with the others？D．What did I do in school today？5．Why did Jenny ask such a question？Because_________________．A．her mother always wanted to know itB．she was going to go homeC．her teacher always wanted to know itD．she didn't like her teacherU6答案：一、1．C next week前不用介词。

2．B3．A Why not + v．原形，指为什么不……。

4．D 主语为复数，to后用动词原形。

5．B want to do sth．6．A 对方式提问用how。

7．C It's time to do sth．8．C 主语为复数。

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Unit6练习题 2022-2023学年人教版八年级英语上册(含答案)

人教版《go for it》八年级(上)Unit6英语练习题本次错：_______个正确率：_________% ◇单项选择题：1.The road ______ last year.A. buildsB.builtC.was builtD.is builtst Sunday my aunt ______ at home with me. We were watching TV all day.A.wasB.wereC.isD.are3.I ______ a mistake. Please don’t be angry with me.A.makeB.madeC.will makeD. had made4. ---How many students are there in the classroom?---________. They are all on the playground.A.No oneB.NoneC.NobodyD.Everyone5.---Who helped you repair the MP4?---_______. They are all on the playground.A.SomebodyB.AnybodyC.Nobody6.I tried several jackets on, but _____ of them looked good.A. bothB. eitherC.noneD.neither7.There ______ a big cake and many candies at the party yesterday.A.wasB. wereC.isD.are8. ---Is everyone here today?---No, Tom is at home_____ he has got a bad cold.A.becauseB.ifC.untilD.unless9. ---How was your trip?---_______.I hope I can go there again.A. Just so-soB.Not very goodC.Nothing specialD.Wonderful10.---Did you have a good weekend?---_______. We enjoyed ourselves in an amusement park.A. I’m afraid notB.I don’t think soC.Of courseD. I hope not11. ---Andy, you were the only person that was late for the meeting , why?---Sorry, sir. But really had a _____ time finding the meeting hall.A.enjoyedB.funnyC.difficultD.pleasant◇句型转换：1.He had breakfast with his family at home this morning,(改为否定句)He ______ ______ breakfast with his family at home this morning.2,They had a meeting on Tuesday (对划线部分提问)___________ they _____ a meeting?3. He found some meat in the fridge. (变为一般疑问句)______ he _______ _______ meat in the fridge?4. There was a park near my home last year.(改为一般疑问句)______ ______ a park near your home last year?5. They saw an octopus in the Visitors’ Center. (对划线部分提问)_______ _____they _____ an octopus?◇用所给单词的适当形式填空1. I like swimming very much. Let’s _______(swim) after school.2. Keep quiet, please. I _______(read) a newspaper.3. Helen enjoys ________(sing) in Chinese.4.He _______(buy) the morning paper this morning.5.How many _______(visit) are there on the bus?6.You’ll become a _____(win) ! Congratulations!7.Thanks for _______(send) me home.8.__________(fortunately), he died last month.9.The old man ______(tell) two stories last night.10. I usually have lunch at school. But yesterday I _______（have）it at home. ◇完成对话A: Why 1._________you away2.__________school yesterday afternoon?B: I was a little ill.A: I’m sorry to hear that. 3_______you better now?B: Much better,4________How many lessons did you5.?A: We had three.B: What lessons6._________you have?A: Chinese,English and physics.B: What7._________the English teacher say about the homework?A: She asked us to8.________ Exercise3 at home. But don’t worry.I can9._________you.B: Thank you very much.A: Not10.__________ 11._____________.◇根据汉语完成句子1.他们参观了动物园，玩得很愉快。

人教版2020-2021学年八年级英语上册unit7单元测试题(含答案)

人教新目标英语八年级上册unit7 单元测试(时间:100分钟满分:120分)Ⅰ.听句子,选择与句子内容相符的图片。

每个句子读两遍(每小题1分,共5分)1. 2. 3. 4. 5.Ⅱ.听句子,选择最佳答语。

每个句子读两遍(每小题1分,共5分)6.A.No,there isn’t.B.No,there aren’t.C.No,there won’t.7.A.In two days.B.Two days ago.C.After two days.8.A.People have much work to do today.B.There will be less free time.C.Yes,it is.9.A.I want to live in space.B.People will have more free time.C.I’ll be a scientist.10.A.Yes,I do.B.On the moon.C.At ten.Ⅲ.听对话,选择最佳选项。

每组对话读两遍(每小题1分,共5分)11.A.Yes,he thinks so.B.No,he doesn’t think so.C.He thinks there will be less pollution.12.A.About free time.B.About food.C.We don’t know.13.A.Yes,he is.B.No,he isn’t.C.No,he doesn’t.14.A.In town.B.In the country.C.At school.15.A.He thinks the girl will be an astronaut.B.He thinks the girl is telling a lie.C.He thinks it’s impossible for the girl to become an astronaut.Ⅳ.听短文,根据所听内容选择正确答案。

人教版八年级英语上册unit6-7单元试题

人教版八年级英语上册unit6-7单元试题一、单项选择。

（每小题1分,共15分）( )1.My uncle is going to___ Dalian next year.A. movesB. move toC. liveD. stay( )2.The old man is very healthy . I think he will live______.A. to be 100 years oldB.100 years old C .at 100 years old D . in 100 years old ( )3.---What will the future ______？---No one can predict exactly.A.be likeB. beC. likeD. like as( )4.Could you please pass me two ?A .pieces paper B. piece papers C. pieces of paper D. pieces of papers ( )5.What do you think Sally will be______10 years?A.afterB. behindC. laterD. in( )6.I can’t find my notebook. Could you he lp me ______ it?A.look for B .look at C. look like D. find out( )7.“There ______a meeting next Monday. ”means “They______a meeting next Monday.”A.will be; will beB. will have；will haveC. will be；will haveD. will have；will be ( )8A. to walk and danceB. walking and dancingC. walk and danceD. walked and dance( )9. There an art exhibition this Sunday.A. haveB. is going to haveC. is going to beD. is going to hold ( )10A. How longB. How soonC. How oftenD. What time ( )11. He played a part in ___the meeting.A .to have B. having C. has D. have( )12. ---When________ you _______here? ---In a month.A. will；movingB. do；moveC. will；moveD. did；move( )13.--What are you going to be when you grow up?--I’m going to be a _________because I like playing the violin.A. musicianB. playerC. pilotD. dentist( )14. ___students went to the zoo last Sunday.A. Two hundredB. Two hundred ofC. Two hundreds ofD. Hundred of ( )15. --- are you going to be a pianist in the future ?---I’m going to practice playing t he piano every day.A. What B .When C. How D. Why( )16.When was David born?－He was born June 12, 1989. A．at B．in C．on D．for ( )17、Breakfast is ______ meal of the day. It provides us with energy after a long night without foodA. importantB. more importantC. the most importantD. very important( )18.The movie Batman and Joker is _______one that I've ever seenA. more exciting B .the most excited C. the most exciting D. more excited( )19.How long i s the wall from here? It’s about 4 kilometres .A．far B．long C．away D．near( )20. All the people are working hard to make their village__ beautiful.A. more and muchB. much moreC. a lot moreD. more and more( )21.Peter speaks Chinese well indeed,but of Course not ___a local speaker in China．A．so fluently as B．more fluent than C．as fluent as D．much fluently than( )22. On weekends the Smiths usually drive to the countryside and ____ the fresh air there.A. take outB. take offC. take inD. take on( )23.Excuse me, Could you please tell me ____my car? Sure .Park it right here. I’s help you.A how to stopB where to parkC where to stop D. when to park( )24.It's much ___to have a small lovely room than a bog cold one.A. goodB. wellC. betterD. best( )25. My father must stop smoking, because the doctor says he is in bad health.A. give upB. give inC. give awayD. give out( )26.Look some people are running the red lights. We should wait ______others are breaking the rule. A. if B. unless C. although D. because( )27.There are plenty of ___here any time of the year.A. tourB. touristyC. touristsD. tourist( )28.____ too much meat isn't good for your healty.A eatingB eatC to eatingD to eat( )29.It is important ____ people ___learn team spirit.A. of; ofB. of；toC. for；toD. to；to( )30.It doesn't _____possible that the doctors have a better way to cure cancer today.A. lookB. soundC. seemD. see( )31.He lost his key .it made him ___in the old to wait for his wife’s return.A. to stayB. stayedC. staysD. stay( )32. Lady Gaga is famous for her beautiful____.A. noiseB. sound C, voice D shape( )33 I won’t dicide on the place ___the end of this month.A. untilB. unlessC. thoughD. through( )34.It’s too cold today Yes, why don’t you ____your coat?A. put onB. put upC. take off( )35.What’s your plan for the summer holiday? I’ll go to Beijing ___the school term ends.A. in order thatB. so thatC. as soonD. as二、完形填空(每小题1分,10分)Mike always like ships. When he was young, he said, “I’m going to be a soldier.” But his eyes were not very 1 , so he didn’t get in.Then he said, I’m going to __2__ a small boat and I’m traveling around the world.” But boats were very expensive, and Mike did not have enough __3__. Last summer Mike found a swimming __4__ near his house. The lesson didn’t cost very _5__and Mike began going to the school at the end of every week and having __6__. Now he is a good swimmer. Last week a little boy said to him: “You’r e a very good swimmer. How do _7__learn so well?” “I’m not good at all,” Mike said and he smiled. “_8_I’m in the water, I say to myself, “There are __9__ fishes behind m e! Then I’m very afraid, and I _10_ quickly.” ( )1.A.big B. beautiful C .good D. small( )2.A.buy B. make C .borrow D .do( )3.A.moneys B. work C. time D. money( ) 4.A.park B. school C. farm D. house( ) 5.A.much B. little C .many D. few( )6.A.meals B. lessons C .talks D. fruit( )7.A.I B. us C. we D. you( )8.A.If B. When C. Though D. Because( )9.A.interesting B. nice C. dangerous D. delicious( )10.A.run B. jump C. swim D.fly。

八年级英语上册Unit7Willpeoplehaverobots检测题新版人教新目标版(含答案)

八年级英语上册：阶段检测卷(Unit 7)(时间：60分钟分值：100分)Ⅰ. 单项选择(每小题2分，共20分)1. There ________ robots in people's homes in 30 years.A. will haveB. is going to haveC. areD. will be2.—Will there be more people in the future?—________．A. Yes, there isB. No, there isn'tC. Yes, there willD. No, there will3.There will be ________ jobs for people because ________ robots will do the same jobs as people.A. fewer; moreB. less; moreC. more; lessD. fewer; fewer4. It will be difficult ________ a robot to do the same things ________ a person.A. to; asB. to; forC. for; forD. for; as5.—Where is Miss Wang?—She went to Hainan and will return ________ six days.A. agoB. laterC. behindD. in6. Some old houses ________ in the town last summer.A. fall downB. fell downC. write downD. wrote down7. I can't find my notebook. Could you help me ________ it?A. look forB. look atC. look likeD. look out8. He often helps his mom ________ the housework, but he never ________．A. with; get boredB. with; gets boringC. to do; gets boredD. to do; gets boring9. I think people here are friendly. Do you agree ________ me?A. withB. toC. onD. from10.This coat doesn't fit him well, as he has ________ a huge body and the coat is ________ small.A. so; suchB. so; soC. such; suchD. such; soⅡ. 完形填空(每小题2分，共20分)Life in the year 2050 will be __1__ from today. Between then and now many changes will take place. But what __2__ the changes be?The population is growing fast. There will be __3__ people in the world and most of them will live longer than people live now.Computers will be much __4__ and more useful, and there will be at least one in every home.And computer studies will be one of the important subjects in __5__ then.People will work __6__ hours than they do now and they will have more free time for sports, __7__ TV and traveling. Traveling will be much cheaper and easier. And more people will go to other countries on vacation.__8__ will be changes in our food, too. More land will be used for building new towns and houses. Then there will be less land for keeping cows and sheep, so meat will be more expensive. Instead they will eat more fruit and vegetables. Maybe people will be healthier.Work in the future will be different, too. Dangerous and hard work will be done __9__ robots. Because of this, many people will not have enough work to do. This will be a __10__．1. A. same B. different C. difference D. the same2. A. does B. do C. will D. would3. A. few B. fewer C. much D. more4. A. smaller B. more small C. bigger D. more big5. A. computers B. homesC. schoolsD. factories6. A. few B. fewer C. little D. less7. A. watch B. to watch C. watches D. watching8. A. It B. They C. There D. Things9. A. for B. to C. of D. by10. A. question B. problemC. thingD. wrongⅢ. 阅读理解(每小题2分，共20分)AHere is a page from a magazine called Future. Read the following information about things that may happen in ten years.Cars will run on solar power(太阳能) and will be much cleaner. They will be much safer. For example, if you are too close to another car or if you are driving dangerously, your car will slow down or stop by itself.New cities will have to be built in the sea. Some cities on water will have two levels(层). People will live on the upper level; the lower level will be used for traffic, shops and factories.Biotechnology(生物技术) will make food better and healthier. Plants without insects or illnesses(病虫害) will be developed. The taste of fruit and vegetables will be better and food will be kept longer.Many new ways to cure(治愈) illnesses will be found. People will use products of genetic engineering(基因产品) to cure more illnesses. However, some new illnesses will appear.1. What will happen in the future according to the passage?A. The air won't be much cleaner.B. Cars will run by itself without a driver.C. It'll be much more dangerous to drive a car.D. There'll be fewer accidents and less pollution.2. Where will new cities have to be built in the future?A. In the sea.B. In the sky.C. Underground.D. On the land.3. What will be made better and healthier by biotechnology?A. Medicine.B. Toys.C. Food.D. Clothes.4. Genetic engineering will help doctors to cure more ________．A. coldB. illnessesC. cancerD. headache5. Which is the best title of the passage?A. Cars in the future.B. Get ready for the future.C. How to keep food longerD. Where will people live in the future?BNow we can see that many people are cutting down the trees in the forests. The forests are getting smaller and smaller. __6__ Because they need wood and farmland. Some scientists say that there will never be any great forests in 20 or 30 years. __7__ The answer will be terrible. __8__ A lot of plants will die and animals will lose their home. __9__It's our duty to protect the forests well. __10__ Let's stop cutting down the trees and make the world greener and greener.6. ______7. ______8. ______9. ______ 10. ______Ⅳ. 用所给词的适当形式填空(每小题1分，共5分)1. There is so much ________(pollute) in the world.2. A tiger is a ________(danger) animal.3. There are many people ________(talk) under the tree.4. There's no time. I ________(agree) that we can get to school on time.5. It seems ________(possible) that people can fly.Ⅴ. 完成句子(每小题2分，共10分)1.她是一位如此好的老师，我们都敬爱她。

Unit 6 单元综合检测试题 2022-2023年人教版英语八年级上册

2022-2023年人教新目标八年级（上）Unit 6单元综合检测试题（满分120分，考试时间100分钟）Name___________ Grade___________第一节单项选择（本题共10小题，每小题1分，计10分）从每小题所给的A、B、C、D四个选项中选出可以填入空白处的最佳答案。

()1.—Amy, is there ________ university in the city?—Yes. My good friend is studying in ________ university now.A．an; an B．a; a C．an; the D．a; the()2.—What's your plan for the coming summer holiday?—I ________ to Germany, which is a European country.A．travel B．am going to travel C．traveled D．have traveled( )3.—We can't decide where to go for the trip.—Why not ________ it with your parents?A．ask B．discuss C．hope D．sell( )4.Sometimes the resolutions may be ________ difficult ________.A．so；to keep B．so；keepingC．too；keeping D．too；to keep( )5.—I like taking photos of cats when I'm free.—Oh，that's an interesting ________.A．article B．example C．hobby D．rule ( )6.I think the answer is right，but I'm not quite ________ it.A．sure about B．similar to C．afraid of D．busy with( )7.Lily loves music. She is going to ________.A．play sports B．exercise moreC．eat more vegetables D．take guitar lessons( )8.Li Yun's father kept on ________ although he was tired.A．to sleep B．sleeping C．to work D．working( )9.We ________ our holidays in Hong Kong next year.A．visited B．spend C．are going to visit D．are going to spend( )10.Sorry，I ________ help you clean the classroom yesterday.A．could B．couldn't C．am able to D．couldn't able to第二节阅读理解（本题共15小题，每小题2分，计30分）根据短文内容，从每题所给的A、B、C、D四个选项中选出最佳答案。

2020学年【人教版】新目标八年级上册英语：全套习题及答案Unit6Ix27mgoingtos

2020学年人教版英语精品资料Section A (1a-2d)Ⅰ. 根据语境及所给首字母提示，补全所缺单词。

1. —What does your uncle do, Joe?—He is a d . He works in a hospital.2. Lisa is an excellent c . Lots of people want to eat the food she makes.3. —Is your father a p ?—Yes. I also want to fly a plane like him.4. Jane dreams of being a p . She practices the piano every day.5. Jimmy is interested in science and he wants to be a s .6. A v is someone who plays the violin.Ⅱ. 根据语境，从方框中选择恰当的短语填空，有的需要变换形式。

bestgrow up, be sure about, make sure, keep on, try one’ｓ1. Mr. Smith ____________ working although he was tired.2. Please give Mary a call to ____________ that she will arrive on time.3. —Can you finish the work by yourself, Dale?—Yes, I ____________ it.4. When we ____________, our parents will grow old.5. Don’t worry. We will ____________ to find out the truth.Ⅲ. 根据对话内容，从方框中选择恰当的选项补全对话，其中有两项多余。

单元测试八年级上册英语人教版Unit 7 试卷含答案(1)

人教新目标版八年级上Unit7一、单项选择1．—Where is Mary，Kate?—She ________ went shopping with her parents.A．maybe B．possible C．probably D．probable 2．At first I watched the soap opera every day but later I ________ bored with it. A．appeared B．made C．got D．stayed 3．There are many visitors ________ at the top of the mountain to enjoy the sunrise.A．to wait B．wait C．waiting D．waited 4．Everyone is busy with their own things. People today seem to have ________ time for each other.A．less B．fewer C．more D．much 5．There ________ a soccer game next Saturday. Would you like to watch it?A．is going to have B．is going to be C．has D．was6．I can't believe ________ a little dog can eat ________ much food.A．so; so B．such; such C．such; so D．so; such 7．People around the world should keep the ________ between countries. A．relationship B．peace C．discussion D．role8．It's careless(粗心) ________ the same mistake again in your composition.A．for you to make B．for you makingC．of you to make D．of you making9．—Is there ________ in today’s magazine?—No,there isn’t.A．anything special B．something specialC．special anything D．special something10．It will be difficult for a robot ________ the same things ________ a person. A．doing; like B．do; from C．to do ; like D．does; as 11．Now ________ is very serious. Some rivers and lakes are ________ . A．pollution；pollute B．polluted；pollutionC．pollution；polluted D．pollute；polluted12．（题文）I think there will be________ pollution in the future because of the new law.A．more B．less C．fewer D．lower13．—How many people came to Beijing for the Olympic Games in 2008?—It's hard to say. ________ people，I think.A．Million of B．Millions ofC．Two million of D．Two millions of二、完型填空Naresh joined Google in Bangalore. You may ask, what’s so 14 about this young boy? Why is he able to 15 in a big company?Naresh is really special. He has no 16 and moves around in his wheel chair (轮椅) because an accident on January 11, 1993. On that day, Naresh’s mother took 17 and his sister to see his grandmother. When he was in the bus, he opened the door a little and wanted the wind to come in. 18 , the door was opened so wide that it threw him out (甩出去). He 19 the bus and hurt (使……受伤) his legs. In the end, the doctors had to 20 his legs.After a month, he went back to his home. Without (没有) his legs, he was worried about his future, 21 he didn’t let himself to lose heart. He studied even 22 than before. He 23 believes that God must have other plans for him.14．A．primary B．difficult C．comfortable D．special 15．A．work B．study C．sleep D．act 16．A．arms B．ears C．legs D．hands 17．A．him B．her C．me D．them 18．A．Really B．Carefully C．However D．Luckily 19．A．fell off B．got up C．dressed up D．found out 20．A．set B．cut C．take D．put 21．A．and B．but C．so D．or 22．A．harder B．slower C．worse D．earlier 23．A．sometimes B．ever C．always D．never三、阅读单选The film Dinosaur Island? I went with my younger brother Dave to see it last Friday. I had a great time, but he didn't. He closed (闭上) his eyes in many parts because the dinosaurs (恐龙) looked so real and he didn't laugh once. I thought the story was really exciting. I'd like to buy the DVD and watch it at home again. The beginning and the ending were excellent!— GeorgeI saw the advertisement (广告) for the film Dinosaur Island on TV. It looked great but it wasn't as good as I hoped. I loved the beginning but the second half was boring, I think. I wouldn't go and see it again. I like films about teenagers (青少年) and their lives much more. I think those are funnier. I also like reading books about teenagers. I'd like to be a writer and write for teenagers one day.— RobertI didn't want the film Dinosaur Island to end because I liked it so much! I read this story before I saw the film. I usually enjoy the books more, but this time was“__▲___”. I really loved the film! I enjoyed feeling afraid and I laughed a lot in some parts of the film too. I read all about how they made the dinosaurs on the Internet after I went to see it. I think most young people will love seeing this film!— Andrew 根据材料内容选择最佳答案。

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