2019_2020学年高中英语Unit22EnvironmentalProtection课后限时作业1北师大版选修8.doc

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1、课后限时作业(一)[语言知识练]Ⅰ.单句语法填空1．Dolook__ahead__beforedoingwhateveryouwanttodo.2．Thepresidentspokeatthebusinessmeetingfornearlyanhourwithout__referring__(refer)tohisnotes.3．Hetoldmehowhehadgivenmeshelterandprotection,withoutwhichI__would_have_died__(die)ofhunger.4．Don'tleavehe

2、r__waiting__(wait)outsideintherain.5．Tomadvocatedthatattention__(should)_be_paid__(pay)toreformingeducationsystem.6．Scoresofguests__had_been_trapped__(trap)intheirroomsbeforethepolicearrived—tooterrifiedtomove.7．Ididn'tcondemnhim__for__whathehaddone.8．Thenumberofpeople_

3、_is__sixtyatpresent,butanumberofpeople__are__comingheretogetticketsforfree.(be)9．Thenewevidenceledtothethief__being_arrested__(arrest)．10．__Given__(give)thattherewassolittletime,Ithinkthey'vedoneagoodjob.Ⅱ.课文语法填空Scientistshavereachedconsensus1.__that__humanbeingsarecaus

4、ingglobalwarming.Theyclaimthatit2.__is_seen__(see)asadangerandisrelevant3.__to__ourlives.GlobalwarmingreferstoanaverageincreaseintheEarth'stemperaturethat,inturn,4.__leads__(lead)toclimatechange.Overthelast100years,plentyofcarbondioxidegoes5.__into__theatmosphereeveryye

5、arandthetemperature6.__has_increased__(increase)by1°F.Andthiswillcause7.__terrible__(terribly)climatechanges.Governmentsallovertheworldhavea8.__responsibility__(responsible)totakeactiontopreventthis9.__from__goingon.Andalotofthingscanberecycled10.__to_save__(save)natura

6、lresources.[高考题型练]Ⅲ.阅读理解Scientiststhinktheyhaveansweredamystery:Howsomeoceancreaturesgotsohugesoquickly?6Afewmillionyearsago,thelargestwhales,averagedabout15feetlong.Thenseeminglyovernight,onetypeofwhale,thetoothlessbaleenwhale(须鲸)becamehuge.Modernbluewhalesgetasbigas10

7、0feet.NicholasPyensonoftheSmithsonianNaturalHistoryMuseumsaid,“Whyisthat？”“It_happened_in_the_glance_of_an_evolutionary_eye,_whichmakesithardertofigureoutwhathappened，”saidGrahamSlater,leadauthorofthestudy.Theirstudyhassuggestedananswer:Iceagesinthelast3to5millionyearss

8、tartedit,changingtheoceansandfoodsupplyforwhales.Theresearchersusedfossilrecordsofthesmallerwhalestocreateafam