高中英语unit2cloning课课练二新人教版选修

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1、Unit2Cloning第一节：语法填空Cloningisawayof1.______(make)anexactcopyofanotheranimalorplant.2.________hastwomajoruses.Oneis3._________gardenersuseittoproducecommercialquantitiesofplants.The4.___________isthatitisvaluableforresearchonnewplantspeciesandformedicalresearchonanimals.5.___________,thep

2、rocessofcloningisdifficult6.___________(undertake).Manyattemptstoclonemammalsfailed.Thefirstsuccessfulclone,Dollythesheep,madethewhole7._________(science)worldfollowitsprocess,thoughithadmoreproblemsthanthenormalsheep.Ontheotherhand,Dolly’sappearance8._________(raise)astormofobjectionsan

3、dhadagreatimpact9.________themediaandpublicimagination.Differentpeoplehavedifferentopinionsofit.However,scientistsstillwonderwhethercloningwillhelporharmusand10.__________itisleadingus.第二节：短文改错Thepossibilityofcloningfierceandextinctwildanimalshavealwaysexcitedfilmmakers.Andtheyarenottheo

4、nlyone.ThepopularityofthefilmJurassicParkproveshowinterestingordinarypeopleareinthesubject.Itisafilminthatascientistclonesseveralkindofextinctdinosaurs.Infact,wearelongwayfrombeingabletocloneextinctanimals.Fromtimetotimepeoplesuggestthattheanimalsthathavedisappearedfromtheearth,canbebrou

5、ghtbacktothelifethroughcloning.Unfortunately,basedonwhatweknow,itispossible.Sodinosaurs’returnedtotheearthismerelyadream.第三节：七选五(2017届湖北省联考)Oneveryimportantcomponentofoptimismisgratitudeorfeelinggrateful.Infact,thereisastrongconnectionbetweenagratefulattitudeandaheightenedsenseofwell-bei

6、ng.Appreciateallthepositivesinyourlifebystartingagratitudejournalinordertorememberwhatyou'regratefulfor.36  .Feelingdown?Insteadoffeelingsorryforyourselfwaitingfortheuniversetothrowyouabone,tryactinglikeyou’rehappy-evenifyouarenot.Asinceresmileandaforcedsmilewillcausethesamechemicalreact

7、ionsinyourbrain,soyoucanactuallyfoolyourmindintofeelingbetterbymakingitreactchemicallyasifthingsweregoingwell. 37  Reassure(使安心)yourselfthateverythingisgood—evenifyoudon’tfeelit.“__38__Ifyou’restuckintraffic,theneverythingelsemustbegoinghorriblytoo,”saysAnneParker,awellne