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1Unit13We’retryingtosavetheearth第二课时SectionA（3a~3b）Ⅰ.根据句意及汉语提示填写单词。1.Therearenoonetosupport（支持）him.2.Keepingtheanimalsinthezooisvery（残酷的）.3.（鲨鱼）areverysmartanimals.4.Ourgovernmenthasmade(法律)tostopdrivingafterdrinking.5.Pollutionproblemisbecomingmoreandmoreseriouswiththedevelopmentofthe(工业).Ⅱ.用括号内所给单词的适当形式填空。6.Hainanisinthe_______(south)partofChina.7.Weallsupporthis_______(science)research.8.Thisisan_______(danger)animal.Weshouldtrytosaveit.9.Smokingis_______(harm)toyourhealth.Youmustgiveitup.10.Tomis_______(strong)inourschool.Ⅲ.单项选择。()11.Keepawayfromthesebooks.They’retoteenagers.A.helpfulB.usefulC.successfulD.harmful()12.ItisreportedthatthefoodthatChinesepeopleeveryyearisenoughtofeed200millionpeopleforayear.A.eatB.haveC.wasteD.make()13.Ourgovernmenthasdosomething_______ourenvironment.A.protectB.protectedC.protectingD.toprotect()14.They_______manybuildingsinthelastfiveyears.A.buildB.havebuiltC.builtD.arebuilding()15.Something______toprotectthesharksbecausemanyofthemareendangerednow.A.mustdoB.mustdoneC.mustbedoneD.havebeendoneⅣ.据汉语意思完成英语句子，每空一词。16.保护海洋生态系统食物链的平衡很重要。It’sveryimportanttokeepthebalanceoftheintheoceanecosystem.17.目前很多动物的数量在下降。Atpresentthenumberofmanyanimalsis.18.他的中指工作时不小心被机器切掉了。Hismiddlefingeraccidentallywhileworking.19.让我们拒绝鱼翅汤吧。因为保护鲨鱼就是保护我们自己。Let’sbecause“toprotectsharksistoprotectourselves”.20.听！贾森在练歌房里引吭高歌。Listen!Jasonissinginghis1.cruelcruel是形容词，意为“残酷的；残忍的”。becruelto意为“对……很残忍”。2.harmfulharmful是形容词，意为“有害的”，其名词形式是harm，意为“伤害；损害”。beharmfulto中，意为“对……有害”，相当于doharmto。【拓展】后缀-ful构成的常用形容词：use→useful（有用的，有益的）help→helpful（有帮助的，有益的）forget→forgetful（健忘的）care→careful（小心的，仔细的）pain→painful（疼痛的）wonder→wonderful（极好的）color→colorful（彩色的；色彩艳丽的）thank→thankful（感激的）beauty→beautiful（美丽的）【温馨提示】别忘了把-y变成-i，再加-ful！3.atthetopof意为“在……顶部或顶端”，其对应短语是atthebottomof，意为“在……底部∕下部”。4.law名词，意为“法律；法规”。常用短语：breaklaw犯法keepthelaw维护法制makealaw制定法律obeythelaw遵守法律passalaw通过法律trafficlaw交通法5.scientific形容词，意为“科学上的；科学的”。当堂训练名校讲坛2voiceinthesinging-hall.【拓展】sciencen.科学scientistn.科学家第二课时SectionA（3a~3b）Ⅰ.1.support2.cruel3.sharks4.laws5.industryⅡ.6.southern7.scientific8.endangered9.harmful10.thestrongestⅢ.11—15AADBAⅣ.16.foodchain17.droppinglow18.was;cutoff19.saynotosharkfinsoup20.atthetopof