Unit 6 第5课时 Task-2022-2023学年八年级英语上册课后培优分级练（牛津译林版）.docx

1、Unit 6 Birdwatching第5课时Study skills & task课下注释小练单词检测1. _ n.说话人 2. _n.旅行3. _ n. 申请4. _ n. 表格5. _ n. 地址6._n.主席7._vt.介绍8._adj.自然的短语自测1. _ 发出优美的声音 2. _ 我们生活的部分3. _ 介绍自己 4. _ 欣赏大自然5. _ 参加活动 6. _ 对感兴趣7. _ 做点事情来保护它们 8. _ 拨打.电话和我联系 重点句子1、一些作者也喜欢在他们的诗歌里写鸟。_2、首先，让我介绍我自己。_3、你可以拨打010-558 6390和我联系或者发at amy邮件给我。_

2、答案自查单词: 1.speaker2.tour3.application4.form5.address6.chairperson7.introduce8.natural短语：1.make beautiful sounds2.part of our lives3.introduce oneself4.enjoy the natural world5.take part in activities6.be interested in.7.do sth to protect them8.call me on.句子：1. Some writers like to include birds in th

3、eir poems too.2. First, let me introduce myself.3. You can call me on 010-5558 6390 or email me at amy .课后培优练级练培优第一阶基础过关练一、 根据句意和所给汉语完成下列单词。1.Please fill in the application_(表格)with your own information.2.Remember to_(介绍)your friend Stone to us when he arrives, OK?3.People living in this area live a

4、 long life because they eat_(自然的) food without pollution.4.-Welcome to my home! Why didnt you pay a visit to me last time? -I would have, but I forgot your_(地址).5. Wed like to make Mike our_(主席) of the Students Union.6.Do you like to join the Birdwatching _(协会)7. Many Chinese students realize the_(重

5、要性)of learning English.8. We hope the local_(政府)will take action to call on people to plant trees.9.We should take an active part in_(保护)the environment.10.Internet users now use the character“duang”to_(描述) any kind of special effect.二、用所给单词适当形式填空。11.I would like_(become) a famous singer in the futu

6、re.12. You need to explain your idea_(clear) when having a talk.13.We have climbed up to the top of the mountain,Leader.May we stop_(have) a rest?14. Nowadays, many foreigners are interested in_(learn) Chinese.15. Its important for us_(not sit) in front of the computer for a long time.16. My dream i

7、s to be a_(science) when I grow up.17. Most people like the _(nature) world. 18. Reading is part of our_( life).19. The_(speak) on stage is my English teacher.20. Please tell me all the_(win)names. I want to introduce them.三、单项选择( )21.-Would you like to come to dinner tomorrow evening?-_,but I have

8、an important meeting to attend.A. Yes, its true B. You really do C.Its upstairs D. Yes,Id love to ( )22.Today the forests are getting fewer and fewer.We must_down too many trees.A. keep people from cutting B. prevent people from cutting C. stop people cutting D. all the above ( )23.I heard your daug

9、hter_in the next room at ten last night.A, sang B.sing C.singing D.sings ( )24. You must clean the room every day_keep it as good as new.A. in order as B, so that C. so to D. in order to( )25.I cant hear you_,something may be wrong with my telephone.A. carefully B. clearly C. quietly D. slowly ( )26

10、.-What would you like?-Id like a cup of milk and_A. two piece of bread B. two pieces of breads C. two pieces of bread D. two piece of breads ( )27.The story is _and all of us are_in it.A. interest; interesting B.interesting;interest C.interested; interesting D. interesting; interested ( )28.The acci

11、dent happened_7 p.m._9 p.m.A. from; to B. between; and C.from;and D. between;to ( )29.There will be less pollution_more people use public transportation.A. but B. though C. unless D. if ( )30.- -Lucy,how do your grandparents like classical music?-_my grandpa_my grandma likes it.They both like it ver

12、y much.A. Either; or B. Not only; but also C. Neither; nor D. Both; and 参考答案1.form2.introduce3.natural4.address5.chairperson6.Society7.importance8.government9.protecting10.describe11.to.become12.clearly13.to have14.learning15.not to sit16.scientist17.natural18.lives19.speaker20.winners21.D22.D23.C24

13、.D25.B26.C 27.D28.B29.D30.B【解析】21.D句意：-明天晚上你乐意来吃晚饭吗？ -是的，我很乐意本题考查Would you like to do？的回答语肯定回答语：Yes，Id like/love to，委婉式否定回答：Id like tobut.也是高频考点。故选D。22.D句意：-今天森林变得越来越少了。-我们必须防止人们砍伐更多的树木。keep people from cutting防止人们砍伐；prevent people from cutting 阻止人们砍伐；stop people from cutting阻止人们砍伐；all the above上面都是

14、。结合语境可知选D。23.C句意：我听见你的女儿昨天晚上10点的时候在隔壁房间里唱歌。sang是sing的过去式，唱歌；sing动词原形；singing现在分词形式；sings第三人称单数形式。根据句意at ten last night可知，这里表示当时正在发生的动作，故用现在分词形式，选C。这里用的句型是hear sb. doing sth.听见某人正在做某事。24.D句意：为了保持房间整洁如新，你必须每天打扫房间本题考查介词短语A不常搭配，B以便，C不常搭配，D为了so that后跟从句in order to do sth为了做某事。答案是D。25.B句意：我听不清你说的话，可能是我的电话

15、坏了carefully细心地；clearly清晰地；quietly安静地；slowly慢地；根据后句somethingmaybewrongwithmytelephone可知是听不清对方在电话中的声音，故选B。26.C句意：-你想要什么？ -我想要一杯牛奶和两片面包根据Idlikeaglassofmilkand_我想要一杯牛奶和两片面包可知应该填两片面包面包bread，是不可数名词，没有复数形式；片piece，是可数名词，复数形式是slices所以两片面包，应该是：twopiecesofbread，故选C。27.D句意:这个故事是有趣的,我们都对它感兴趣。interest n.兴趣,爱好; vt

16、. 使感兴趣,引起的兴趣。interested,感兴趣的,组成词组be interested in对感兴趣;interesting有趣的,用来修饰物,介绍事物的特征。第一个句子是故事的特征,第二个句子是固定短语,根据句意及结构,故选D。28.B句意：这个事故发生在七点到九点之间，from.to.意为“从到”，between.and.意为“在和之间”，根据句意故选B。29.D句意：如果更多的人使用公共交通工具的话将会使污染更少一些，but除了；though尽管；unless除非；if如果根据morepeopleusepublictransportation，如果更多的人使用公共交通工具是减少污染

17、的条件可知if引导条件状语从句。故选D。30.B句意:-露西，你的祖父母喜欢古典音乐吗？-不但我爷爷而且我奶奶喜欢它。他们都很喜欢。A要么，或B不仅如此，还包括，C也不也不是，D二者都和，根据谓语动词是第三人称单数likes，这里是就近原则，所以去掉D，根据下文they both like it very much ，去掉AC。故选B。培优第二阶拓展培优练四、 完形填空阅读下面短文，从短文后所给各题的四个选项（A、B、C、D）中，选出可以填入空白处的最佳选项。Once there was an old man who lived a lonely life.He worked as a met

18、al collector and he would search trash bins for metal which he could sell.He lived a sad life，_31_his face was badly scarred（伤痕） by a fire which killed his family.He was so_32_ that nobody would like to look at him.His main_33_ in life was to save enough money to fix his face to live a normal life.

19、Now there was a homeless boy who couldnt _34_ anything.He had no money and was hungry every day.The boy_35_ food but some people beat him and he couldnt even_36_ because he was blind.The old man saw the _37_ boy and took him home.Then he _38_ him and bought him clothes.Years passed and one day he sa

20、id ， I wish my eyes became better so that I could help you.I know you are very tired these years.You must be very beautiful because you are so_39_ .Maybe one day I could see your_40_. The old man became _41_，being too moved to say anything. The next day he went to the hospital with the boy and asked

21、 the doctor _42_how much it would cost to treat his face.The doctor told him a thousand dollars.He asked how much it would be to save the boys_43_ .The doctor said fifteen hundred dollars would do.He had saved about fifteen hundred.A few minutes later，the old man went to _44_the doctor and left，know

22、ing he could_45_ truly show his face to the one he loved.( )31.A.thoughB.becauseC.butD.or( )32.A.uglyB.lonelyC.weakD.dirty( )33.A.reasonB.promiseC.goalD.rule( )34.A.sayB.seeC.understandD.find( )35.A.cared aboutB.asked forC.turned toD.gave out( )36.A.look aroundB.give upC.run awayD.stand up( )37.A.po

23、orB.dirtyC.independentD.silly( )38.A.forgotB.trainedC.fedD.praised( )39.A.braveB.importantC.kindD.humorous( )40.A.heartB.handC.faceD.house( )41.A.worriedB.silentC.proudD.active( )42.A.patientlyB.quietlyC.loudlyD.secretly( )43.A.beliefB.strengthC.sightD.life( )44.A.callB.payC.askD.order( )45.A.neverB

24、.evenC.justD.also五、 阅读理解,阅读下面的短文，选择最佳答案。Nowadays，more and more people realize the importance of having a healthy eating habit.As we know，the daily food we eat affects us in different ways.Sometimes，people are not clear about what kind of food is healthy or not.The USDA has prepared a food guide to h

25、elp people .learn about which kind of food is the healthiest to eat.The food guide describes six main food groups：meat （like fish and chicken），dairy （like milk and cheese），grains （like bread and rice），fruit，and vegetables.The last group is fats and sweets.Though this guide was from the US government

26、，it is also very useful for people in other countries.The result of the study shows that too much animal fat does harm to our health.For example，in the USA，people eat a lot of meat and only a small amount of grains，fruit and vegetables.As a result，they have a high rate （率） of cancer and heart diseas

27、e.Japanese people eat large amounts of grains and very little meat.The Japanese live longer than anyone else in the world.However，when Japanese people move to the US，the rate of heart disease and cancer rises as their eating habit changes.And as hamburgers and other highfat foods become popular in J

28、apan，the rate of heart disease and cancer is rising there as well.People are also eating more meat and dairy food in other countries，in which the disease rate is rising along with the change of the way people eat.Doctors suggest people eat more grains，fruit and vegetables and less meat and dairy foo

29、d.It is important for children to eat healthily as well as their parents.When parents have poor eating habits，their children usually do，too.After all，children eat the same way as their parents.When parents eat healthy food，the children will learn to enjoy it，too.Then they will develop good eating ha

30、bits easily.( )46.In which section of a magazine can you read the passage？ A.Health and sport.B.History and culture.C.Science and technology.D.Society and nature.( )47.Paragraph 2 mainly tells us that _.A.Japanese are always healthier than AmericansB.living in the US is not good for peoples healthC.

31、if you eat too much fat you will have cancerD.the way we eat may cause some health problems( )48.Which of the following statement is TRUE？ A.Parents eating habits are important to their children.B.The food guide by the USDA is only fit for people in the USA.C.Eating amount of grains can make you hav

32、e high rate of cancer.D.Japanese people always know how to eat healthily when they are abroad.( )49.What is the best title for the passage？ A.The healthy lifestyle around the world.B.Cancer and heart disease in the US.C.A healthy food guide to the world.D.Keep away from highfat foods.参考答案31.B32.A33.

33、C34.B3.5B36.C37.A38.C39.C40.C41.B42.D43.C44.B45A【解析】31.B 考查连词。A.though即使；B.because因为；C.but但是；D.or或者。前后句为因果关系，所以连词选择because，句意：他过着非常悲惨的生活，因为他的脸在失去家人的那场大火中留下了伤疤。故答案选B。32.A 考查形容词。A.ugly丑陋的；B.lonely孤独的；C.weak虚弱的；D.dirty脏的。因为他的脸上有伤疤所以可推知他很丑，所以没人愿意看他，句意：他太丑了以至于没有人愿意看他。故答案选A。33.C 考查名词。A.reason原因，理由；B.promi

34、se承诺；C.goal目标；D.rule规则。修复他的脸是他的人生目标，句意：他的人生目标就是存足够多的钱来修复他的脸，从而过上正常人的生活。故答案选C。34.B 考查动词。A.say说；B.see看见；C.understand理解；D.find找到。由后文可知这个男孩是个盲人，因此看不见任何东西，句意：现在这里有一个什么也看不见的无家可归的男孩。故答案选B。35.B 考查词组。A.care about关心；B.ask for索要；C.turn to求助于；D.give out释放，放出。向别人索要食物使用词组ask for，句意：这个男孩乞讨食物但有些人会打他，他甚至不能逃走因为他是个盲人。

35、故答案选B。36.C 考查词组。A.look around 四处看；B.give up放弃；C.run away逃跑；D.stand up站起来。被人打一般会想要逃跑，但这个男孩不能逃跑因为他是个盲人。句意：这个男孩乞讨食物但有些人会打他，他甚至不能逃走因为他是个盲人。故答案选C。37.A 考查形容词。A.poor穷的；B.dirty脏的；C.independent独立的，自主的；D.silly愚蠢的。前文提到男孩没有钱，所以是穷困潦倒的，句意：老人看见了这个穷困潦倒的男孩，把他带回了家。故答案选A。38.C 考查动词。A.forget忘记；B.train训练；C.feed喂养；D.prais

36、e赞扬，称赞。因为男孩每天都很饿，所以可推知老人第一件事情是给他拿了食物吃，句意：然后他给他拿了食物吃，并给他拿了衣服。故答案选C。39.C 考查形容词。A.brave勇敢的；B.important重要的；C.kind善良的；D.humorous滑稽有趣的。因为老人对男孩很好，所以男孩会认为老人很善良，句意：你一定很漂亮因为你很善良。故答案选C。40.C 考查名词。A.heart心脏；B.hand手；C.face脸；D.house房子。有文章最后一句show his face to the one he loved可推知男孩想要看他的脸，句意：或许有一天我能看看你的脸。故答案选C。41.B 考

37、查形容词。A.worried担心的；B.silent沉默的；C.proud骄傲的；D.active活跃的，积极的。由说不出话可知老人变得沉默，句意：这个老人变得很沉默，因为太感动而说不出话。故答案选B。42.D 考查副词。A.patiently耐心地；B.quietly安静地；C.loudly大声地；D.secretly秘密地。因为不能被男孩听到所以是偷偷地询问，句意：第二天他和男孩去了医院并偷偷问一生需要多少钱才能修复他的脸。故答案选D。43.C 考查名词。A.belief相信；B.strength力量；C.sight视力；D.life生活。因为男孩是盲人，所以需要的是恢复视力，句意：他问需

38、要多少钱能回复男孩的视力。故答案选C。44.B 考查动词。A.call打电话；B.pay付钱；C.ask问；D.order命令。因为老人想要给男孩治疗眼睛，所以向医生付钱，句意：一会儿过后，老人给医生付了钱就离开了，知道他永远没有机会给他爱的人看自己的脸了。故答案选B。45.A 考查副词。A.never永不；B.even甚至；C.just只；D.also而且。因为老人的钱用来给男孩治眼睛了，所以就没钱给自己治脸了，句意：一会儿过后，老人给医生付了钱就离开了，知道他永远没有机会给他爱的人看自己的脸了。故答案选A。46.A47.D48.A49.C【解析】46.A 通读全文可知，文章主要讲述了美国农

39、业部为世界准备的健康食物指导。所以可以在杂志的健康与运动部分读这篇文章，故选A。47.D 段落大意题。根据The USDA has prepared a food guide to help people learn about which kind of food is the healthiest to eat.（USDA准备了一份食物指导来帮助人们了解哪种食物是吃起来最健康的。）可知第二段主要讲了我们的饮食方式可能会导致一些健康问题。故选D。48.A 推理判断题。根据After all，children eat the same way as their parents.（毕竟，孩子们和

40、他们的父母有同样的进食方式。）可知父母的饮食习惯对孩子很重要。故选A。49.C 标题归纳题。通读全文可知，文章主要讲述了美国农业部为世界准备的健康食物指导。故选C。培优第三阶中考沙场点兵一、 单项选择( )1.The local guide spoke _she could to make the visitors understand her.A. as clear as B. as clearly as C. so clear as D. so clearly as ( )2.Heilongjiang Province is_North-east China. A. To B. on C.

41、in D. of ( )3.-What do you think of the woman singer?-Her voice sounds_.I like her songs.A. sweet B. sweetly C.bad D. badly ( )4. Every January,a large number of birds _ to the Swan Lake to spend winter._themcan be over 30,000.A.flies; The number of B. fly;A number of C. flies; A number of D. fly; T

42、he number of ( )5.Im happy to see great_have taken place in my hometown.Many new roads have been builtA. experiences B. advantage C. dream D. changes ( )6.-Why do you like the parrot_?-Because it has_feathers.A. well; colour B.better; colourful C. best; colourful D. best; colour( )7.This math proble

43、m is not_for us to solve.A. easy enough B. enough easy C. easily enough D. enough easily ( )8.I think_necessary for us_the birds.A. it; protect B. its; to protect C. its; protecting D. it;to protect ( )9.You can call me_0759-3342839 or e-mail me _Sunflower .A. on; at B. at; on C. in;at D. for;at ( )

44、10.Taiwan is_the east of China and_the east of Fujian.A. in; in B. in;to C. to; on D. to;to 二、阅读下面短文，回答下面的问题。There are many wetlands in China and some of them have become the worlds important wetlands. The Chinese Yellow Sea Wetlands are among them.They are in Yancheng，Jiangsu Province.They are home

45、 for many different kinds of animals.The worlds largest Milu Deer Nature Reserve is in them.More than 700 Milu deer live freely there.There are not many redcrowned cranes in the world，but every winter you can see some in the Redcrowned Crane Nature Reserve in the Yellow Sea Wetlands. The temperature

46、 in the wetlands is usually neither too high nor too low.There is a lot of rain and sunshine，too.They are really good places for wildlife.Offering（提供） food and home for some special kinds of animals is not the only reason why we need to protect wetlands.Wetlands are important because they also preve

47、nt flood.But some people want to change the wetlands to make more space for farms and less space for wildlife. Luckily，more and more people are beginning to realize that we should protect how the wetlands as soon as possible.Every year，on February 2nd，many activities are held to tell people more abo

48、ut wetlands.根据上面短文的内容，回答问题。（每题答案不超过六个单词）11.Where is the Chinese Yellow Sea Wetlands ？ _12.How many Milu deer live in Milu Deer Nature Reserve？ _13.Why are wetlands important for human beings besides offering food and home for some special kinds of animals？ _14.Are there any Redcrowned Cranes in the

49、Yellow Sea Wetlands？ _15.When are many activities held every year to protect the wetlands？_三、短文填空请认真阅读下面短文，并根据各题所给首字母的提示，写出一个合适的英语单词完整、正确的形式，使短文通顺。On August 20，Chinese astronauts Liu Boming and Nie Haisheng did the second spacewalk of the Shenzhou task.There is no air in space so spacewalks can be d

50、angerous.The space is f_16_of harmful radiation（辐射）.L_17_，the spacesuits （宇航服）can protect astronauts from possible danger.A spacesuit is like a small station.It gets everything ready for astronauts.Under the protection of it，astronauts can be safe while c_18_out a spacewalk.The suit has headphones a

51、nd s_19_ for them to talk with each other.There is also a mirror on the wrist .Astronauts can check their suits by l_20_ at it.Each suit c_21_ around 30 million yuan and it takes four months to m_22_just one!On September 27，2008，Zhai Zhigang wore it to carry out Chinas first spacewalk for about 19 m

52、inutes.The suits Chinese astronauts wear today are the second generation（代）.It can support walks as long as eight hours and can be used more often.The first generation could only be used five t_23_within two years，while the s_24_generation can be used 15 times within three years.Now Chinese scientis

53、ts are working harder，trying to develop b_25_ spacesuits.参考答案1.B2.C3.A4.D5.D6.C7.A8.D9.A10.B【解析】1.B句意：当地导游尽可能清楚地讲话，以便让游客听懂她的话。as.assb.could相当于as.aspossible，意为“尽可能”。clearly副词，“清楚地”修饰动词spoke。故选B。2.C句意：黑龙江省在中国的东北。in，on，to表方位，用法区别的最简单记法：in属于，在境内；to不属于也不接壤；on接壤但不属于。本题“黑龙江在中国境内”，因此用in。D选项没有表方位的用法。选C。3.A句意

54、：-你认为那个女歌手怎么样？-她的声音听起来很甜我喜欢她的歌sound为系动词，故后面接形容词构成主+系+表语结构，所以排除为副词的选项B、D；再由I like her songs可知，喜欢是因为她的嗓音很甜。故选A。4.D句意：每年一月，大量的鸟飞到天鹅湖过冬。数量可能超过3万。a large number of 大量的，the number of 的数量，根据句意选D。5.D句意：我很高兴看到家乡发生了伟大的变化。许多新道路已经建成。A 经验，B优势，C梦想，D变化，根据句意选D。experience，经验，经历；advantage，优点；dream，梦想；changes，变化根据句中ha

55、ve taken place 以及Many new roads have been built，可知，是家乡发生了巨大的变化，故选D。6.C句意：你为什么最喜欢鹦鹉？因为他有彩色的羽毛。colorful彩色的；likebest最喜欢。据句意，故选C。7.A句意：这道数学题对我们来说不容易解决。这里放在is后面用形容词形式，enough足够的，修饰形容词通常放在后面，easy，简单的，形容词。故选A。8.D句意：我认为保护鸟类对我们来说是必要的。结合设空处前面的判断此处的代词在句子中作形式宾语，常用固定句型：think/find/make+it+形容词+（for sb）+to do sth，在句

56、中使用it代替to do不定式形式宾语。故选D。9.A句意:如果你想知道更多信息，你可以打电话0759-3342839或发邮件到Sunflower163com。email sb.at+邮箱意为“给某人发电在邮件，邮箱是”;call sb.at/on+电话号码意为“给某人打电话，电话是”。故选A。10.B句意：台湾在中国东部，福建省东面。此题第一空根据介词in的固定用法，在内部的事物需要使用in，而台湾属于中国内部；第二空根据常识，台湾和福建有一定距离的隔开，故使用介词to；如果两地接壤，则使用介词on。故选B。11.They are in Yancheng，Jiangsu Province.1

57、2.More than 700 Milu deer .13.Because they also prevent flood.14.Yes，there are.15.It is on February 2nd.【解析】11.They are in Yancheng，Jiangsu Province.细节理解题。根据The Chinese Yellow Sea Wetlands are among them.They are in Yancheng，Jiangsu Province.可知，中国黄海湿地就是其中之一。它们位于江苏省盐城。故答案为They are in Yancheng，Jiangsu

58、 Province。12.More than 700 Milu deer .细节理解题。根据The worlds largest Milu Deer Nature Reserve is in them.More than 700 Milu deer live freely there.可知有700只麋鹿在麋鹿自然保护区。故答案为More than 700 Milu deer。13.Because they also prevent flood.细节归纳题。They are really good places for wildlife.Offering food and home for so

59、me special kinds of animals and birds is not the only reason why we need to protect wetlands.Wetlands are important because they also prevent flood.可知，为一些特殊种类的动物和鸟类提供食物和家园并不是我们需要保护湿地的唯一原因。湿地很重要，因为它们还可以防止洪水。所以我们必须保护湿地，因为它们还能防止洪水。故答案为Because they also prevent flood。14.Yes，there are.细节判断题。根据There are n

60、ot many redcrowned cranes in the world，but every winter you can see some in the Redcrowned Crane Nature Reserve in the Yellow Sea Wetlands.世界上丹顶鹤不多，但每年冬天你都能在黄海湿地的丹顶鹤自然保护区看到一些丹顶鹤。故答案为Yes，there are。15.It is on February 2nd.细节理解题。根据Every year，on February 2nd，many activities are held to tell people more

61、 about wetlands.每年的2月2日，都会举办许多活动，让人们更多地了解湿地。可知，是在2月2日。故答案为It is on February 2nd。16.full.17.Luckily.18.carrying.19.speakers.20.looking.21.costs.22.make.23.times.24.second.25.better.【解析】16.full.考查形容词。is为系动词，后跟形容词，结合句意，太空_有害的辐射，判断空格处词义为充满，be full of为短语，意为充满。故答案为full。17.Luckily.考查副词。结合上文，The space is fu

62、ll of harmful radiation可知太空中有很多辐射，据此判断宇航服可以保护宇航员是幸运的，用副词作状语。故答案为Luckily。18.carrying.考查动名词。carry为动词原形，while后跟动词要变为动名词形式，句意理解为在它的保护下，宇航员可以安全地进行太空行走。故答案为carrying。19.speakers.考查可数名词复数。结合句意，宇航服有耳麦和_可以彼此说话，判断空格处词义为对讲机，用可数名词复数表示类别。故答案为speakers。20.looking.考查动名词。by为介词，后动词要变为动名词形式，句意理解为宇航员可以通过观察来检查他们的宇航服。故答案为

63、looking。21.costs.考查动词的第三人称单数形式。根据takes判断时态为一般现在时，Each suit后谓语动词用第三人称单数形式，句意理解为每一套服装的成本约为3000万元，只制作一套就需要4个月!故答案为costs。22.make.考查动词不定式。it takes st to do sth为固定句型，意为做某事花费，句意理解为每一套服装的成本约为3000万元，只制作一套就需要4个月!故答案为 make。23.times.考查可数名词复数。five后跟可数名词复数，结合下文，can be used 15 times within three years可知三年可用15次，据此判断第一代三年只能用五次。故答案为times。24.second.考查序数词。根据The suits Chinese astronauts wear today are the second generation.可知中国宇航员现在穿的是第二代，据此判断第二代三年内可以用15次，空格处用序数词表示顺序。故答案为second。25.better.考查形容词比较级。spacesuits为名词，用形容词修饰，结合句意，现在中国科学家正在努力工作，试图研发_宇航服，判断空格处用比较级。故答案为better。