甘肃省嘉峪关市2016_2017学年高二英语下学期期中试题

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1、甘肃省嘉峪关市2016-2017学年高二英语下学期期中试题第I卷（共70分）第一部分阅读理解（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的四个选项（A、B、C和D）中选出最佳选项，并在答题卡上将该项涂黑。AForyearsscientistshavebeenworriedabouttheeffectsofairpollutionontheearth"snaturalconditions.Somebelievetheairinsidemanyhousesmaybemoredangerou

2、sthantheairoutside・Itmaybeonehundredtimesworse・Indoorairpollutioncancauseapersontofeeltired,tosuffereyepain,headacheandotherproblems・Somepollutants（污染物）cancausebreathingdisorders,diseasesofbloodandevencancer.Mostscientistsagreethateverymodernhousehassomekindofindoorpo

3、llution.Peoplehavepaidmoreattentiontotheproblemnow.Itistruethatwhenbuildersbeganmakinghousesandofficestheydidnotwasteenergy・TodothistheybuildbuiIdingsthatlimitedtheflowofairbetweeninsideandoutside.Theyalsobeganusingman-madebuildingmaterials.Thesematerialsarenowknownto

4、letoutharmfulgases.Astheproblembecamemoreserious,scientistsbegansearchingforawaytodealwithit.Theydiscoveredanaturalpollutionc.ontrolsystemforbuilding—greenplants・Scientistsdonotreallyknowhowplantscontrolairpollution.Theybelievethataplant'sleavesabsorb（吸收）ortakeinthepo

5、llutants.Inexchangetheplantlotsoutoxygenthroughitsleavesandtinyorganizationsonitsroots.Scientistssuggestthatallbuildingsshouldhaveonelargeplantorseveralsmal1plantsinsideforeveryninesquaremetersofspace・Studiesofdifferentplantsshowthateachabsorbsdifferentchemicals.Sothe

6、mosteffectivewaytocleanlheairistousedifferentkindsofplants・Havinggreenplantsinsideyourhousecanmakeitaprettierandmorehealthyplace.1.Generallyspeaking,indoorairpollutionmaybemoreharmfulthantheairoutsidebecause•A.indoorairpollutioncanoftenmakepeopleseriouslyillB.man-made

7、buildingmaterialsgiveoffdangerousgasesC.theremaybe”moreharmfulgasesoutsidethebuildingsD.theairindoorsispolluted,whichisveryharmful2.SomekindofindoorpollutioncanbefoundinA.everymodernhouseB.everyoldhouseC.allkindsofhousesD.allkindsofoffices3.Theindoorairpollutioniscaus

8、edbyA.thelimitoftheflowofairbetwocninsideandoutsideB.thebuildingwaythatthebuilderswanttosaveenergyC.thebuildingthingsthatare