2019-2020学年高二英语下学期期末考试试题(实验班)

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1、2019-2020学年高二英语下学期期末考试试题(实验班)第一题听力理解（共两节，共20小题，每小题1.5分，满分30分）第一节(共5小题；每小题1.5分，满分7.5分)听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。第二节(共15小题；每小题1.5分，满分22.5分)听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置

2、。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。第二题阅读理解（每小题2分，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。Microplasticparticles(微塑料颗粒)appeartobekillingfishbecausesomebabyfishprefertoeattheparticlesratherthantheiractualfoo

3、d,researchershavewarned.Withfearsthattheamountofplasticintheoceanscouldsoonequaltheweightoffishinthesea,scientistshavebeeincreasinglyconcernedabouttheeffectsonthemarineenvironment.Now astudypublishedinthejournal Science hasfoundthatbabyperch(鲈鱼)willactivelychooset

4、oeatplasticovertheplanktontheywouldnormallyfeedon.Theresearcherssaidthisgreatlyincreaseddeathratesoftheperch,stoppingtheirgrowthandappearingtochangeusuallybehavior.Forexample,thyarelosingtheabilitytosmellapredator(捕食者),whichmakesthemmuchmorevulnerable.Forexample,t

5、heyseemedtolosetheabilitytosmellapredatorthatmadethemmuchmorevulnerable.ProfessorPeterEklov,aco-authorofthe Science paper,said:“Thisisthefirsttimeananimalhasbeenfoundtoprefertoeatplasticparticlesoverfood.IncreasesinmicroplasticpollutionintheBalticSeaanddecreasesof

6、thecoastalbasicspecies(物种)haverecentlybeennoticed.Whenplacedinatank,perchexposedtomicroplasticwereeatenfourtimesmorequicklythanperchthathadnotbeeneatingplastic.”FellowresearcherOonaLpnnstedtstressedtheeffectsoffisheatinglargeamountsofplasticwerelikelytobefeltthrou

7、ghoutthefoodchain.“Ifearlylife-historystagesofotherspeciesaresimilarlyaffectedbymicroplastics,thiswillinturnincreasedeathrates,sotheeffectsonmarineecosystemscouldbelasting,”shesaid.Microplasticisproducedaslargerpiecesofplasticwastearebrokendownintheenvironment,but

8、largequantitiesofmicrofibersfromsyntheticclothes---materialsessentiallymadeofplastic---areproducedeachtimetheyarewashedandaresmallenoughtopassthroughwas