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时间:2020-03-15
《河南省周口中英文学校2015届高三英语上学期第三次(12月)月考试题.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、英语试题AArainforestisanareacoveredbytalltreeswiththetotalhighrainfallspreadingquiteequallythroughtheyearandthetemperaturerarelydippingbelow16℃.Rainforestshaveagreateffectontheworldenvironmentbecausetheycantakeinheatfromthesunandadjusttheclimate.Withoutthefore
2、stcover,theseareaswouldreflectmoreheatintotheatmosphere,warmingtherestoftheworld.Losingtherainforestsmayalsoinfluencewindandrainfallpatterns,potentiallycausingcertainnaturaldisastersallovertheworld.Inthepasthundredyears,humanshavebegundestroyingrainforests
3、insearchofthreemajorresources(资源):landforcrops,woodforpaperandotherproducts,landforraisingfarmanimals.Thisactionaffectstheenvironmentasawhole.Forexample,alotofcarbondioxide(二氧化碳)intheaircomesfromburningtherainforests.Peopleobviouslyhaveaneedfortheresources
4、wegainfromcuttingtreesbutwewillsuffermuchmorethanwewillbenefit.Therearetwomainreasonsforthis.Firstly,whenpeoplecutdowntrees,generallytheycanonlyusethelandforayearortwo.Secondly,cuttinglargesectionsofrainforestsmayprovideagoodsupplyofwoodrightnow,butinthelo
5、ngrunitactuallyreducestheworld'swoodsupply.Rainforestsareoftencalledtheworld'sdrugstore.Morethan25%ofthemedicinesweusetodaycomefromplantsinrainforests.However,fewerthan1%ofrainforestplantshavebeenexaminedfortheirmedicalvalue.Itisextremelylikelythatourbestc
6、hancetocurediseasesliessomewhereintheworld'sshrinkingrainforests.21.Rainforestscanhelptoadjusttheclimatebecausethey______.A.reflectmoreheatintotheatmosphere B.reducetheeffectofheatfromthesunontheearth C.bringabouthighrainfallthroughouttheworldD.rarelyc
7、ausethetemperaturetodroplowerthan16℃22.Whatdoestheword“this”underlinedinthethirdparagraphreferto?-11-A.Humanshavebegundestroyingrainforests.B.Peoplehaveastrongdesireforresources.C.Wewilllosemuchmorethanwecangain. D.Muchcarbondioxidecomesfromburningrainfo
8、rests.23.Itcanbeinferredfromthetextthat______.A.wecangetenoughresourceswithoutrainforestsB.wewillgrowfewerkindsofcropsinthegainedlandC.thelevelofannualrainfallaffectswindpatternsD.thereisgreatmedicinepotentia
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