初中英语九年级下册人教Unit13We'retryingtosavetheearth!Unit13SectionA(3a-3b)课后作业.docx

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1、Ⅰ.根据句意及汉语提示完成单词。1．Ithinkit's________(残酷的)ofthemtoshoottheanimals.2．Withthedevelopmentof________(工业)，itwillcausemorepollutionproblems.3．Thegovernmenthasmadesome法(律)toprotectthewildanimals.4．Tosolvethisproblem，weneedtolearnmore________科(学的)knowledge.5．Smokingis

2、________(有害的)toyourhealth.Youmustgiveitup.Ⅱ.单项选择。6．—Whathaveyoulearntafterthreeyears'studyinChina，Maria?—Iwastaught________knowledge________goodmanners.A．either；orB．notonly；butalsoC．neither；norD．not；but7．Inourcity，thenumberoftheteachers________about，2000，buto

3、nlyabout________ofthemarementeachers.A．is；sevenhundredsB．are；sevenhundredC．is；sevenhundredD．are；sevenhundreds8．—Danielisaboyoffewwords.—But________，heiswarmhearted.A．inahurryB．infactC．intheendD．atall9．Sofar，we________Englishfornearlysevenyears.A．learnB．learnt

4、C．havelearntD．hadlearnt10．—Ihaven'tseenmygrandparentsforlong.I'mtoobusy________themthesedays.—Whynotcalltheminstead?A．visitB．visitingC．visitsD．tovisitⅢ.根据句意及汉语提示，用恰当的短语填空。11．Thismedicinehassaved____________(数百万)people'slivessinceitwasputintouse.第1页共3页12．_____

5、_______(多)peopleareworkinghardtoachievetheirdreams.13．Helen____________(不再)practicesthepianobecausesheisbusywithherschoolwork.14．I____________(听)thenewteacherinthelasttwodays.15．Weshouldprotecttheanimals____________濒(危)．Ⅳ.用方框内所或短的适当形式填空。law，hearof，cutoff，top，

6、nolonger，infact，eachtime，butalso，suchas，sofarPerhapsmanyofushave(16)________sharkfinsoup.Butdoyourealizethat(17)________youenjoyabowlofsharkfinsoup，you'rekillingawholeshark？Whenpeoplecatchsharks，they(18)________theirfins.Thisisnotonlycruel，(19)________harmful

7、totheenvironment.Becausewithoutafin，asharkcan(20)________swimandslowlydies.Sharksareatthe(21)________ofthefoodchainintheocean'secosystem.Iftheirnumbersdroptoolow，itwillbringdangertoalloceanlife.But(22)________，around70millionsharksarecaughtandtradedeveryyear.

8、Environmentalprotectiongroups，(23)________WildAidandtheWWF，areteachingthepublicabout“finning．”(24)________，noscientificstudieshaveshownthatsharkfinsaregoodforhealth.Sogovernmentsmustmake(