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选修八Unit3高考拆组训练
练(一)语言运用组块专练——练准度
(限时:25分钟)
Ⅰ.完形填空
Resealable(可密封的)plasticbags—sometimescalledbyabrandname,suchasZiploc?—arethoselittleclearplasticbagsyouusetokeepyoursandwichesandchipsfresh.Theyusuallyhavesomesortofsealingmechanism,likeaplasticzipper,whichallowsyoutosealthebagtokeep__1__out.
Keepingairawayfrom__2__allowsthemtostayfreshlonger.Bacteriaandotherorganismsintheairwill__3__fooditemsovertimeifallowedtoeinto__4__withthem.Sealedplasticbagskeeptheseorganisms__5__gettingtoyourfood.
Resealableplasticbagscanbeusedformorethanjust__6__sandwiches,chipsandsnackstoschoolforlunch.They’realsousedtokeepleftovers__7__intherefrigerator.Manypeoplealsousethemto__8__foodinthefreezerforuseinthefuture.
The__9__oftheresealableplasticbagstartedoutin1951atapanynamedFlexigrip,Inc.Flexigrip__10__aplasticzipperfrompatentswhichwasboughtfrom__11__BorgeMadsen.Thesezipperswere__12__usedaspartsofbindersandbriefcases.
Overtime,__13__,plasticzipperbagsweredeveloped.Eventually,in1968,DowChemicalpany__14__tomarketitsZiploc?brandofresealableplasticbagstogrocerystores.Theyturnedouttobevery__15__.
Today,thesetypesofbagsare__16__inmanydifferentsizesandstyles,fromsnackandsandwichbagstocraftandfreezerbags.Youcanalsobuybagswithexpandablebottomsthat__17__ontheirown.Somebagsevenallowyouto__18__foodinthemicrowave!
However,nowmanypeopletrytouse__19__plasticbecauseofitseffectontheenvironment.Somanufacturersofresealableplasticbagshavetaken__20__tobeemoreenvironmentallyfriendly.
语篇解读:本文主要介绍了可密封塑料袋的用途及发展史。同时指出,为了减少污染,这种塑料袋的生产厂家也采取措施以使他们的产品更加环保。
1.A.air B.water
C.dust D.fog
解析:选A由第二段开头的“Keepingairaway”可知,此处指把空气阻挡在外面。
2.A.plants B.containers
C.bags D.foods
解析:选D根据下文中的“Bacteriaandotherorganismsinth
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