南大网络教育 大学英语统考B上 unit 6,7

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1、窗体顶端当前位置：>>单元测试    您的总分是：90交际用语（共5小题，每小题4分，满分20分）1.----MayIopenthewindowtoletinsomefreshair? ----___________A.ComeonB.TakecareC.Goahead!D.Holdon!【批阅】回答正确！【答案】C2.----Wouldyoupleasehelpmewiththebox? ----_________A.Yes,pleaseB.No,pleasedon’tC.Withpleasure.D.M

2、ypleasure【批阅】回答正确！【答案】C3.----Doyoumindmyopeningthewindow?It’sabithotinhere. ----_____________,asamatteroffactA.GoaheadB.Yes,mypleasureC.Yes,IdoD.Comeon【批阅】回答正确！【答案】C4.----IwonderifIcoulduseyourcomputertonight？ ----______I'mnotusingitrightnow.A.Sure,goahead

3、.B.Idon'tknow.C.Itdoesn'tmatterD.Whocares?【批阅】回答正确！【答案】A5.----Wouldyoumindchangingseatswithme？ ----______A.Yes，youcanB.Ofcourse，IliketoC.No，Idon'tmind.D.Certainly，pleasedo.【批阅】回答正确！【答案】C阅读理解（共10小题，每小题3分，满分30分）Passage1Thewaterwedrinkanduseisrunningshort（短缺）

4、intheworld.Weallhavetolearnhowtostopwastingourlimitedwater.Oneofthestepsweshouldtakeistofindwaysofreusingit.Experimentshavealreadybeendoneinthisfield.Todayinmostlargecities,freshwaterisusedonlyonce,andthenitrunstowastesystem.Butitispossibletopipetheusedwat

5、ertoapurifying（净化）factory.Thereitcanbefiltered（过滤）andtreatedwithchemicalssothatitcanbeusedagain,justasitwerefreshfromaspring.Butevenifeverylargecitypurifiedandreuseditswater,westillwouldnothaveenough.Thenwecouldturntotheoceans.Allwe’dhavetodotomakeuseofthe

6、seawateronearthistogetridofthesalt.Thisprocessiscalleddesalinization（脱盐作用）,anditisalreadyinuseinmanypartsoftheworld.6.Thewaytostopwastingourlimitedwateristo_________.A.doexperimentswithwaterB.purifytheusedwaterandreuseitC.usefreshwateronceagainD.makeuseofs

7、eawater【批阅】回答正确！【答案】B7.Thefollowingtellsushowtoreusetheusedwater.Whichistherightorderofthepassage?_______.a.tohavetheusedwaterfilteredb.toputchemicalsinitc.topipeittotheusersd.topipetheusedwatertobepurifiedtoafactoryA.d-a-b-cB.a-c-b-dC.b-c-d-aD.b-d-c-a【批阅】

8、回答正确！【答案】A8.Therewouldn’tbeenoughwaterforusifwedidn’t________.A.turntotheoceansformorewaterB.reuseusedwaterandmakeuseofseawaterC.reuseusedwaterD.takestepstopurifyusedwateronearth【批阅】回答错误！9.Theword“it”inthelas