第5练阅读＋七选五＋完形＋书面表达Ⅰ.阅读理解体裁：科普文话题：科学世界词数：360时间：7′SirJohn，aBritishscientistwhowonlastyear'sNobelPrizeformedicine，saidhehadpredictedatthetimeofhisfrogexperimentsthatthesuccessfulcloningofamammalwouldhappenwithin50years，andthat“maybethesameanswerisappropriate”forthesteptohumancloning.Parentswholosechildreninaccidentsmaybeabletoclone“copies”toreplacethemthen.Althoughanyattempttocloneanentirehumanwouldraisecomplexmoralissues，thebiologistclaimedpeoplewouldsoonovercometheirconcernsifthetechniquebecamemedicallyuseful.CloningwasregardedwithextremedoubtswhenitwasfirstdevelopedbutbecamewidelyacceptedafterthebirthofLouiseBrown，thefirst“testtubebaby”．Hesaid“，Whenmyfirstfrogexperimentsweredone，anAmericanreporteraskedhowlongitwillbebeforethesethingscanbedoneinmammalsorhumans.Isaid‘，Well，itcouldbeanywherebetween10yearsand100years—howabout50years’？Itturnedoutthatitwasn'tfaroffthemarkasfarasDollywasconcerned.Maybethesameanswerisappropriate.”SirJohnaddedthatcloningahumanbeingeffectivelymeansmakinganidenticaltwin，anddoctorswouldthereforesimplybe“copyingwhatnaturehasalreadyproduced”．Theaveragevoteonallowingparentsofdeceasedchildren，whoarenolongerfertile(能生育的)，tocreateanotherusingthemother'seggsandskincellsfromthefirstchild，thinkingthetechniquewassafeandeffective，is60percentinfavor.Thereasonsfor“no”areusuallythatthenewchildwouldfeeltheyweresomesortofareplacementforsomething.【语篇解读】本文是一篇科普说明文。主要介绍了克隆人类或在未来50年内变成现实。1．SirJohnpredictedthehumancloningwouldbearealityin________atmost.A．100yearsB．60yearsC．50yearsD．10years答案C[“细节理解题。根据第一段中的thesuccessfulcloningofamammalwouldhappenwithin50years，andthat‘maybethesameanswerisappropriate’forthesteptohumancloning”可知，克隆人类或在未来50年内变成现实。故选C。]2．Accordingtothetext，whichstatementisNOTtrue?A．LouiseBrownisthefirst“testtubebaby”．B．Humancloningisstillacontroversialtopic.C．SirJohnispositiveaboutthefutureofhumancloning.D．Humancloningiscreatingsomethingthatdidn'texistbefore.答案D[细节理解题。根据第二段第二句中的“becamewidelyacceptedafterthebirthofLouiseBrown，thefirst‘testtubebaby’”可知，LouiseBrown是第一个试管婴儿，所以A“项正确；根据第二段第一句中的Althoughanyattempttocloneanentirehumanwouldraisecomplexmoralissues”可知，克隆人类仍然是一个存在争议的话题，所以B项正确；根据第二段SirJohn“所说的话Well，itcouldbeanywherebetween...howabout50years”？可知，他对未来克隆人类的发展是肯定的，所以C“项正确。根据第二段最后一句...doctorswouldthereforesimplybe‘copyingwhatnaturehasalreadyproduced’”．可知，克隆人类是复制已存在的人类，所以D项不正确。故选D。]3．Theunderlinedword“identical”probablymeans________．A．sameB．specialC．newD．clear答案A[“词义猜测题。根据本句中的copyingwhatnaturehasalreadyproduced”可知，identical“”意为相同的，完全同样的。故选A。]4．Whatdoesthetextmainlytalkabout?A．ThelifeofSirJohn.B．Predictiononhumancloning.C．Viewsonhumancloning.D．Achievementsinhumancloning.答案B[主旨大意题。纵观全文可知，SirJohn预测克隆人类或在未来50年内变成现实，所以整篇文章在说明对克隆人类的预测。故选B。]Ⅱ.根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。Whatisthepurposeofreadingorstudying？Ifyoucan'trememberwhatyoureadorstudy，itwillbeawasteoftime.__5__Oneusefulaidthatdoeshelp...
