高考第二轮复习英语阅读理解练习五（含解析）

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1、高考第二轮复习英语阅读理解练习五（含解析）ATheUnitedStatesgovernmentwantstoknowwhatthepublicthinksaboutitsfindingsonthesafetyofclonedanimals.TheFoodandDrugAdministrationsaysmeatandmilkfromclonesofadultcattle,pigsandgoatsaresafetoeat.AnF.D.A.officialcalledthem"assafetoeatasthefoodweeat

2、everyday."Andwhenthoseclonesreproducesexually（有性繁殖）,theagencysays,theiroffspring（后代）aresafetoeataswell.Butresearchonclonedsheepislimited.SotheF.D.A.proposesthatsheepclonesnotbeusedforhumanfood.TheUnitedStatesthisyearcouldbecomethefirstcountrytoapprovethesaleoffood

3、sfromclonedanimals.First,however,thepublicwillhaveninetydaystocommentonthreeproposeddocuments.OnDecember28ththeF.D.A.releasedalongreport,calledadraftriskassessment,alongwithtwopolicydocuments.TheagencysaysitmustreceivecommentsbyAprilsecond.TheF.D.A.seemedreadytoac

4、tseveralyearsago,butanadvisorycommitteecalledformoreresearch.Fornow,thegovernmentwillcontinuetoaskproducerstohonorarequestthattheynotsellfoodsfromclonedanimals.Clonesarestillrare.Theycostalotandaredifficulttoproduce.TheF.D.A.saysmostfoodfromcloningisexpectedtocome

5、notfromclonesthemselves,butfromtheirsexuallyreproducedoffspring.Itsaysclonesareexpectedtobeusedmostlyasbreedinganimalstospreadgoodqualities.PublicopinionstudiesshowmostAmericansdonotliketheideaoffoodfromclonedanimals.Butthisresearchalsoshowsthepublicknowslittleabo

6、utcloning.Cloningdiffersfromgeneticengineering.Acelltakenfromaso-calleddonoranimalsisgrownintoanembryo（胚胎）inthelaboratory.Next,theembryoisplacedintotheuterus（子宫）ofafemaleanimal.Iftheprocessissuccessful,thepregnancyreachesfulltermandageneticcopyofthedonoranimalisbo

7、rn.1.Fromthepassageweknowthat              .A.foodsfromclonedanimalsarepopularinAmericaB.clonedadultanimalsaresafetoeatexceptsheep.C.clonedanimalswillbeeasytoproduceD.mostfoodsfromcloningisexpectedtotakeplaceofotherfoods2.Themainpurposeofthetextisto              .

8、A.tellainterestingstory    B.givesomeadviceonfoodsC.giveareport           D.comparedifferentopinions3.Whobelievethatfoodsfromcloningaresafetoeat?A.MostA