1、Module 2 DNA the secret of life Period One Introduction & Reading and Vocabulary(1) 每课一练（外研版选修9）时间：45分钟.单项填空1There are five pairs_，but Im at a loss which to buy.Ato be chosen Bto choose fromCto choose Dfor choosing答案Bfive pairs后用不定式作后置定语。根据句意：有五双可供选择，我不知道该选哪一双，可知是“从这五双中”进行选择，故选B项。2He is intelligent
2、but not talkative, which_his father.Atakes after Blooks likeCtakes up with Dlooks as if答案A表示“长相、性格像某人”时用take after。take up with.开始与密切联系；look as if看起来好像。3Can you help me with my exercise?Oh, its_.I need ask Xiao Tong to help me.Aout of question Bout of the questionCOK Dnecessary答案Bout of the question
3、不可能的，由下文可知“帮不了忙”。4John was punished by the teacher because he_tapes_to other students in class when the teacher was asking questions.Apassed；on Bpassed；overCpassed；away Dpass；across答案Apass sth on to sb把某物传递给某人，可以省去on。其他短语均不可如此搭配。如：Many customs are passed on to us from generation to generation.。5The
4、operation has never_in this country.Aperformed Bbeen performingCbeen performed Dperforming答案Cperform an operation做手术。句意：这种手术在这个国家从未做过。手术和做之间是被动关系，故应用被动语态。只有C项可构成完成时的被动语态。6I looked under_bed and found_book I lost last week.Athe；a Bthe；the C/；the Dthe；/答案B句意：我向床下看了看，发现了我上周丢失的那本书。语境表明“bed”和“book”都是特指的，
5、故两空都填定冠词。7_is my passport，sir；please check it.AThat BThis CIt DThere答案B就近指代用this。句意：这是我的护照，先生；请检查。”8_you have understood it，I dont have to explain it.ABy now BNow thatCNow this DRight now答案Bby now直到现在；now that既然；right now现在，立刻。根据句意应选B。9I_TV when suddenly the doorbell rang.Aam watching BwatchedCwas w
6、atching Dhad been watching答案C句意：门铃突然响时，我正在看电视。描述的是当时我做事的状态，故选C。10Do you like_here?Oh，yes.The air，the weather，the way of life.Everything is nice.Athis Bthese Cthat Dit答案D用it代指下文中所说的总的情况。其它代词没有这种用法。.完形填空I had been swimming competitively for about five years and was ready to quit, because I _1_ receivi
7、ng “Honorable Mentions(鼓励奖)”at each competition, which simply _2_，“Thank you for coming.You didnt even rank first, second or third, but we dont want you to go home with _3_.”The very day before _4_ swim meet, I decided to _5_ the news to my grandma that I was quitting the swim team.You _6_ to know m
8、y grandmashe was a small woman but could _7_ the entire operation of her house without ever leaving her sofa or raising her _8_.As I sat next to my grandma，I laid my big head on her tiny little lap _9_ she could rub it.When I told her of my desire to quit swimming, she _10_ pushed my head off her la
9、p, sat me straight up facing her and said, “Baby, _11_ these words：A quitter never wins and a _12_never quits.Your grandmother didnt _13_losers or quitters.You go to that swim meet tomorrow, and you swim like you are a _14_ of mine, you hear？”The next day I arrived at the swim meet, and as I _15_ th
10、e board，I noticed the other girls with their skintight caps, goggles (护眼镜) and Speedo suits were here to do one thing_16_ me.The competition began and I was swimming _17_ than before.I noticed I was tied with one person.I thought we were battling for eighth place and I refused to finish _18_， so I a
11、dded more kick on the last two hundred yards.I hit the _19_ and looked to the left and to the right for the swimmers who had beat me, but _20_ was there.That day, at age fifteen，I broke the national 16yearold 400freestyle record.1A.kept Bhated Cenjoyed Dstopped答案A这是作者打算退出比赛的原因，总是得鼓励奖，因此用keep doing一直
12、。2A.expresses BreadsCmeans Dsays答案C这是作者理解的“鼓励奖”的含义。read, say都可以表示“信上、通知上等说”，用在此处不符合语境。3A.anything BsomethingCeverything Dnothing答案D鼓励奖的用意是安慰参赛选手，别让他们空手回家。4A.a big Ban usual Ca common Da special答案A从文章最后作者打破全国记录看，这是一次重要比赛，big是口语化用法，相当于important。5A.hide Bbring Cbreak Dreport答案Cbreak the news是习惯用法，当“突然宣
13、布消息”讲。6A.get Blike Cused Dhave答案D此处是作者为了介绍自己的祖母所做的铺垫：你们得了解一下我的祖母。get to know sb认识某人，用在此处不符合逻辑。7A.complete BrunCcontrol Dperform答案Brun the operation当“操持家务”讲，是习惯用法。8A.voice Bhand Carm Dhead答案A文章介绍作者祖母的坚定和才干：她不用离开沙发，也不用抬高嗓门，就把一切处理得井井有条。9A.now that Bas soon asCin case Dso that答案Dso that引导目的状语从句，后面的情态动词c
14、ould可以作为提示。in case以免，引导条件状语从句；now that既然，引导原因状语从句。10A.carefully Brudely Cabruptly Dgently答案Cabruptlysuddenly突然地，说明祖母对消息感到吃惊，因此一下推开了作者的头。11A.read BrememberCrepeat Drecall答案B祖母让作者牢记下面的话。12A.winner BloserCswimmer Dfighter答案A半途而废者不会获胜，获胜者决不半途而废。13A.know Bhelp Caccept Draise答案D祖母不“抚养”失败者和半途而废者。14A.fan Bg
15、randchildCdaughter Dfollower答案B祖母鼓励作者拿出作为自己孙女的勇气去参加比赛。15A.got on Bgot offCjumped off Dclimbed up答案A作者登上跳板，准备比赛。16A.support Bcheer Cwin Dbeat答案D从文章前面的介绍看，这些女孩都是参赛选手，她们的目的就是打败作者。注意“战胜，打败某人”用beat sb，而不是win sb。17A.harder Bmore Cfaster Dbetter答案A作者比原来游得更加“卖力”。作者在游泳比赛中不可能知道自己比原来游得更快，因此不选C、D项。18A.hopeless
16、BdisappointedClast Dsecond答案C根据常识可知，参加比赛的一般有八个选手，得第八名，就是最后一名。19A.record Bwall Cmark Dline答案B本文介绍的是游泳比赛，而不是径赛，因此手触到游泳池的壁，才是到达终点。20A.everyone BsomeoneCno one Danyone答案C因为作者得了第一，因此作者触壁的一瞬间，没有其他人到达终点。.阅读理解Scientists now know a lot more about a grain that people have eaten for ten thousand years.Research
17、 teams around the world have completed a map of the genes of rice.Such a map is called a genome(基因组)The findings appeared last week in the magazine Nature.The map represents ninetyfive percent of the rice genome.And the information is considered ninetynine point ninenine percent correct.The aim is t
18、o speed up the improvement of rice.The scientists warn that the kinds of rice plants used now have reached the limit of their productivity.Yet world rice production must grow by an estimated thirty percent in the next twenty years to meet demand.In their paper, the researchers say rice is an excelle
19、nt choice for genetic and and engineering.Rice genes have only about three hundred and ninety million chemical bases.That might sound like a lot.But other major food grains have thousands of millions.The new map could better explain not just rice.Rice shares a common ancestor with other crops in the
20、 grass family.These include corn and wheat.Also，rice shares more than seventy percent of its genes with Arabidopsis.This plant is in the mustard family.Its genome was completed in two thousand.Genes produce proteins which guide the building of organisms.Genes are placed along chromosomes(染色体)Rice ha
21、s twelve chromosomes.The scientists found almost thirtyeight thousand genes.By comparison，studies have found only about twentyfive thousand genes in humans.The International Rice Genome Sequencing Project in Tsukuba，Japan，led the research.The effort started in 1998.The Rice Genome Research Program i
22、n Japan supervised (监督) the mapping of about half of the genome.American researchers were responsible for three chromosomes.Chinese and Taiwanese researchers mapped one each.A French group mapped one and part of another.Researchers in Brazil, Britain, France, India, South Korea and Thailand also too
23、k part.The project was expected to take ten years.But the work was finished in six because many of the groups shared information and technology.Two companies, Monsanto of the United States and Syngenta of Switzerland, also shared their research.1The researchers chose rice as their experimental objec
24、t because_.Arice is the main food grain for people on earthBrice has a smaller chemical bases than other plantsCit is easier to map the genes of rice than other plantsDrice production must grow a lot in the next 20 years答案B由第二段后半部分知答案为B项。2From the passage we can infer_.Acorn has a different ancestor
25、 with riceBthe map made by the researchers can explain rice but not othersCproteins produced by genes guide the building of organismDthere will be a big increase in population in the latest 20 years in the world答案D由第三段知A、B表述错误。C项表述正确但并非推断出的。由文章第二段的“Yet world rice production.to meet demand.”可推知人口将会有较
26、大的增长。故选D项。3How many countries joined in the research?A9. B10. C11. D12.答案B共有这些国家参与了研究：Japan，America，China，France，Brazil，England，India，South Korea，Thailand，Switzerland。4From the last paragraph we know_.Athe research will be finished in 10 yearsBsix years is enough for the research teamsCthe quick success of the research is based on the cooperation of researchers from different countriesDan organization of Japan led the research答案C由“.because many of the groups shared information and technology.”知选C项。
