河北狮州市2016_2017学年高二英语下学期周练试题1

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1、河北定州2016-2017学年第二学期高二英语周练试题（1）一、阅读理解1.Woulditsurpriseyouto1earnthat,1ikeanimals,treescommunicatewitheachotherandpassontheirwealthtothenextgeneration?UBCProfessorSimardexplainshowtreesaremuchmorecomplexthanmostofuseverimagined・AlthoughCharlesDarwinthoughtthattreesarecompetingforsurvivalofthe

2、fittest,Simardshowsjusthowwronghewas.Infact,theoppositeistrue:treessurvivethroughtheirco-operationandsupport,passingaroundnecessarynutrition"dependingonwhoneedsit”•Nitrogen（氮）andcarbonaresharedthroughmilesofundergroundfungi（真菌）networks,makingsurethatalltreesintheforestecologicalsystemgivean

3、dreceivejusttherightamounttokeepthemallhealthy.Thishiddensystemworksinaverysimilarwaytothenetworksofneurons（神经元）inourbrains,andwhenonetreeisdestroyed,itaffectsall.Simardtalksabout"mothertrees”,usual1ythe1argestandoldestplantsonwhichal1othertreesdepend.Sheexplainshowdyingtreespassonthewealth

4、tothenextgeneration,transportingimportantmineralstoyoungtreessotheymaycontinuetogrow.Whenhumanscutdown"mothe.rtrees"withnoawarenessofthesehighlycomplexutreesocieties”orthenetworksonwhichtheyfeed,wearereducingthechancesofsurvivalfortheentireforest.“Wedidn，ttakeanynoticeofrt.”Simardsayssadly.

5、"Dyingtreesmovenutritionintotheyoungtreesbeforedying,butwenevergivethemachanee.”Ifwecouldputacrossthemessagetotheforestryindustry,wecouldmakeahugedifferoneetowardsourenvironmentalprotectioneffortsforthefuture.【小题11Whatwouldbethebesttitleforthepassage?A.OldTreesCommunicateLikeHumansB.YoungTr

6、eesAreInNeedOfProtectionC.TreesAreMoreComplexThanYouThinkD・TreesContributeToOurSociety【小题2】TnSimard'sopinion,trees.A.dependoneachotherB・protecttheirownwealthC.competeforsurvivalA.providesupportfordyingtrees【小题3】WecanlearnfromthepassagethatA.umothertrees”areusuallyofnousetoothertrees.B.Chari

7、esDarwinhadthesamethoughtasSimard.C.peopleknowmuchaboutthecomplex"treesocieties"・D.ifmothertreesnarecutdown,thesurvivalfortheentireforestwillbeaffected・【小题4】The.underlinedword“it”inthelastparagraphrefersto.A.howtreesgrowoldB.howutreesocieties”workC・howfo