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ID:45810887
大小:61.80 KB
页数:8页
时间:2019-11-17
《2019-2020年高中英语Unit7TheSeaPeriodone课时作业北师大版必修》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、2019-2020年高中英语Unit7TheSeaPeriodone课时作业北师大版必修Ⅰ.阅读理解AUndertheworld’soceansandseasliesanattractingworldoflandsthatstretcheshundredsofkilometersineverydirection.Inthisworld,withoutthesun,therearedeepcanyons(峡谷),greatplains,andtoweringrangesofmountains.Andthisunderwaterworldcov
2、ers70percentoftheearth’ssurface.Theworld’slongestmountainrangeextends16,000kilometersundertheAtlanticOceanfromIcelandtotheAntarctic.CalledtheMidAtlanticRidge(山脊),thisrangeofmountainscontainsanumberofhighpeaks,amongthemaretheAscensionIsland,theAzores,andIceland.Theworld’shi
3、ghestmountainisfoundinthemidPacificarea.ItistheHawaiianvolcanoMaunaKea,whichis9,450metersfrombasetopeak.Thisisnearly610meterstallerthanMountEverest.Only4,221metersofMaunaKearisesabovethesurfaceofthesea.In1873theBritishsurveyshipChallengerdiscoveredthedeepesttrench(海沟)inall
4、theseas.NamedtheChallengerDeep,itisneartheislandofGuamandis11kilometersdeep.Sincesunlightonlyreachestoadepthofabout244meters,manyofthecreaturesofthedeepsealiveinaworldofdarkness.However,togethelpintheirsurvival,manyhavetheirownbrightlightingsystem.Foodestothemfromtheupperl
5、evelsoftheoceanandtheycangetaconstantsupplyfromthewastematterthatgraduallymovesdownwardtowardtheoceanfloor.Theseunderseacreaturesmustremainatthevariousplacesforwhichtheyarefit.Towandertootherlevelscouldresultindeathfromimproperwaterpressure.1.Thebesttitleforthistextshouldb
6、e.A.TheSunlessWorldB.TheLongestMountainC.TheHighestMountainD.TheDeepestTrench答案 A解析 主旨大意题。通读全文可以看出,这篇文章主要讲述的是黑暗的海底世界的一些情况。2.Theworld’slongestmountainrangeundertheocean.A.extends1,600kilometersundertheAtlanticOceanB.iscalledtheMidAtlanticRidgeC.containsfewhighpeaksD.extends
7、fromIcelandtotheAzores答案 B解析 细节理解题。由第二段可得出本题的答案。3.Fromthispassageweknowthat.A.thelongestandthehighestmountainslieintheseaB.thehighestmountainliesonlandC.thelongestmountainliesonlandD.MaunaKeais4,221metershigh答案 A解析 细节理解题。由第二、三段我们知道,最长的山脉在大西洋,最高的山峰则在太平洋中部的夏威夷。据此,我们可得出本题的答案。
8、4.Ifakindofcreaturelivesinanseaareaabout300metersfromthesurface,.A.thecreaturewon’thaveen
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