2018_2019学年高中英语unit20newfrontiers课时跟踪练（三）lesson2lesson3pre_reading

《2018_2019学年高中英语unit20newfrontiers课时跟踪练（三）lesson2lesson3pre_reading》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、课时跟踪练(三)Lesson2&Lesson3—Pre-readingⅠ.阅读理解ATheideaofcloningyourpetsoundslikealaughablewasteofmoney,becauseitis.Butitstartstoseemalittlelesslaughablewhenyourownbelovedpetstartsgettingolder.IfIhadhadafewhundredthousanddollarstospare,IknowIwouldhavehalfseriouslyconsidereditformydearlittlecat,whodie

2、dlastyear.OnecouplethatdoeshappentohaveafewhundredthousanddollarstospareisBarryDillerandDianevonFurstenberg,whohavereportedlyclonedtheirbelovedJackRussellTerrier(akindofdog),Shannon,andnowhavetwoidenticalJackRussellTerriers,namedDeenaandEvita.Whenyourpetdies,youjustwantyourpetback,oratleastascl

3、oseacopyasyoucanget.Soit'sreallynosurprisethatofthearound600dogsclonedbySooamBiotechResearchFoundationmostwereclonedforsadpetowners.ThelabinSeoul,SouthKorea,isnowtheonlyplaceontheplanetinthebusinessofcloningpetdogsforowners.But,infact,thetechnologywon'tgiveyouyourpetback.Theredon'tyetappeartobe

4、anystudiesonthebehaviorofclonedpets,butresearchonclonedcowsandpigshassofarshownmarkeddifferencesinbehaviorandevenlooksinclonedanimals.TheDNAisexactlythesame,buttherearestilldifferencesinpersonalityandappearance.EvenifDillerandvonFurstenburgraisetheirnewdogsintheexactsameenvironmentintheexactsam

5、ewaythattheyraisedShannon,thenewdogswillstillbehavedifferently.“Thepromiseofpetcloningisthatyourclonedpetisgoingtobehaveandlookliketheoneyoualreadyhave—andthatwillnotbethecase，”saidProfessorJorgePiedrahitaatN．C.State.“We'veclonedanimalsthatwereraisedinthesameenvironment,buttheystilldidn'tactthe

6、same.”语篇解读：本文是议论文。尽管宠物克隆技术已经比较成熟，但克隆出来的宠物并不能与原来那个一模一样。1．WhatcanwelearnaboutthelabinSeoul?A．Itwassetupbysomepetowners.B．Ithasclonedhundredsofpetdogs.C．Itchargesnothingforitsservices.D．Ithasclonedacatfortheauthor.解析：选B　细节理解题。由第二段中的“Soit'sreallynosurprisethatofthearound600dogsclonedbySooamBiotechR

7、esearchFoundationmostwereclonedforsadpetowners.”可知，这家实验室已经克隆了几百只宠物狗。2．Whydoestheauthormentionthestudiesonclonedcowsandpigs?A．Toexplainwhyfarmanimalsarecloned.B．Todiscusswhypetcloningissopopular.C．Toshowclonedanimalsareverydifferen