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1、选修八Unit1AlandofdiversityWelcometoourvillage.I’dliketotellyou_________wefoughtagainstthefloodlastyear.Lastsummertherewastoo________rainandaseriousfloodhitourvillage,floodingthefieldsandroads,_________awaymanyofourhouses________evenbringingdangertothepeople’ssafety._____
2、__thehelpofthePLA,wewouldnothavebeenabletoovercomethedifficulties,winthebattle_______theterribleflood,andget________fairlygoodharvestlastautumn.Whatmovedusmostis________thevillagehead,ZhangDeming,letthefloodflowintohisfish-pond,preventing_______fromgoingintothevillage.
3、Weallthought_________(high)ofhisdevotedspiritintheinterestsofthewholevillage.Weshouldlearnfromhim.Unit2CloningCloningisawayof_________(make)anexactcopyofanotheranimalandplant.________hastwomajoruses.Oneis_________gardenersuseittoproducecommercialquantitiesofplants.The_
4、_______isthatitisvaluableforresearchonnewspeciesandformedicalresearchonanimals.________,theprocessofcloningisdifficulttoundertake.Manyattemptstoclonemammalsfailed.Thefirstsuccessfulclone,Dollythesheep,madethewhole________(science)worldfollowitsprocess,thoughithad______
5、_problemsthanthenormalsheep.Ontheotherhand,Dolly’sappearance_________(raise)astormofabjectionsandhadagreatimpact_______themediaandpublicimagination.Differentpeoplehavedifferentopinionsofit.However,scientistsstillwonderwhethercloningwillhelp_______harmusandwhereitislead
6、ingus.Unit3Inventorsandinventions__________thewritercalleduphermotherinthecountryonthephone,shelearnedthatsnakescameneartheirhouseandthatthesnakesseemed__________(make)theirhomeneartheirhouse.Thewriterfeltproudandconsidered__________achanceforhertodistinguish__________
7、byinventingsomething_________wouldcatchsnakesbutnotharmthem.Shesetabout__________(research)thehabitsofsnakes.Shedecidedtocoolthemsothattheycouldbe________(easy)caught.However,herfirsttwoplanswerenotsuccessful.Asaresult,shehadtoattempta_________time,whichhelpedherfulfil
8、lheraimsuccessfully.Shewas_________delightedthatshewasdeterminedtosendher_________(invent)tothepatentofficetogetrecog
