2018-2019学年高中英语 课时分层作业2 Unit 7 The Sea 北师大版必修3

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1、课时分层作业(二)[语言知识练习固基础]Ⅰ.单句语法填空1．Theroomis15feetinlength(long)and10feetinbreadth.2．Withmanythingstodeal(deal)with，Ihavetoworkdayandnight.3．Hewasbannedfromdriving(drive)forsixmonths.4．Givingadviceattherighttimehastoinvolveagreatdealofintelligence(intelligent)．5．Themor

2、eheworked，themoreenergetic(energy)hebecame.6．Ittookmeanhourtofindthesolutiontotheproblem.7．Hisnieceisattractive(attract)andmatureforherage.8．Youcanalwaysmakealivingwithaskill.9．Iadvisedthemtowatchoutforslickspotsonthesidewalk.10．Theinformationyougatheredisofgreath

3、elptome.Ⅱ.完成句子1．我们必须采取措施制止污染。Wemusttakemeasurestostoppollutionhere.2．由男孩领路，我们很容易找到回家的路。Withtheboyleadingtheway，wefoundthewaybackhomeeasily.3．你工作越努力，你就会取得更大的进步。Theharderyouwork，thegreaterprogressyouwillmake.4．当心一个带着黑帽子的高个男人。Watchoutforatallmanwithablackhat.5．奥运会每四年

4、举行一次。TheOlympicsareheldeveryfouryears/everyfourthyear．[高考题型练习提能力]Ⅰ.阅读理解FarfromthelandofAntarctica(南极洲)，ahugeshelfoficemeetstheocean.Attheundersideoftheshelftherelivesasmallfish，theAntarcticcod.Forfortyyearsscientistshavebeencuriousaboutthatfish.Howdoesitlivewherem

5、ostfishwouldfreezetodeath？Itmusthavesomesecret.TheAntarcticisnotafortableplacetoworkandresearchhasbeenslow.Nowitseemswehaveananswer.Researchwasbegunbycuttingholesintheiceandcatchingthefish.Scientistsstudiedthefish'sbloodandmeasureditsfreezingpoint.Thefishweretaken

6、fromseawaterthathadatemperatureof－1.88℃andmanytinypiecesoficefloatinginit.Thebloodofthefishdidnotbegintofreezeuntilitstemperaturewasloweredto－2.05℃.Thatsmalldifferenceisenoughforthefishtoliveatthefreezingtemperatureoftheicesaltmixture.Thescientists'nextresearchjob

7、wasclear：Findoutwhatinthefish'sbloodkeptitfromfreezing.Theirsearchledtosomereallystrangethingmadeupofaprotein(蛋白质)neverbeforeseeninthebloodofafish.Whenitwasremoved，thebloodfrozeatseawatertemperature.Whenitwasputback，thebloodagainhaditsantifreezequalityandaloweredf

8、reezingpoint.Studyshowedthatitisanunusualkindofprotein.Ithasmanysmallsugarmolecules(分子)heldinspecialpositionswithineachbigproteinmolecule.Becauseofitssu