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1、温馨提示:此套题为Word版，请按住Ctrl,滑动鼠标滚轴，调节合适的观看比例，答案解析附后。关闭Word文档返回原板块。课时作业（四）Unit2Lessons7、8（20分钟50分）I・根据句意及汉语或首字母提示完成单词（5分）1.一Whatarcyoudoing?—Wearedigginga(坑)・2.Please(覆盖)thetablewiththecloth.3.Plantscanstop(土壤)frombeingwashedaway.4.Pleasecleanyourroom・It'sto
2、od・5.—Whatahotday!—Yes.Let'ssitinthesunderthetree・II・用所给词的适当形式填空(5分)1.WhenisTree(plant)Day?2.Manypeopleare(worry)abouttheenvironment.3.Hurryup,thereisnotime(leave)・4.It'sagreatway(learn)English・5.Pleaseremember(call)mewhenyougetthere・III.单项选择(10分)1.It'
3、spleasantwithyouonthephone・A.talkB.talksC.talkingD・totalk2.Yesterdaysheboughtakitepaper・A.madeofB.madefromC.makingofD.makingfrom3.Jennywentoutoftheroomsayingaword.Shewasreallyangry.A.withB.noC・notD.without4.Therearconlyseveralleavesthetree;somebirdsarc
4、singingthetree・A.in;onB.on;inC・under;inD.in;under5.Theflowersmakethegardenverybeautiful・A.lookB.looksC・lookingD.tolookIV・连词成句（10分）1.can,clean,air,trees,help,the2.is,apple,tree,there,an,here9■3.flowers,to,important,are,people1.the,plants,medicine,from,i
5、s,made2.many,forest,live,animals,in,theV・补全对话（10分）从方框中选择最佳选项完成对话，有两项多余。A.Itcameoutfromthesoilyesterday.B.Pleasepasssomewatertome.C.Aseed,ofcourse・D.Whatdoseedsneedtogrow?E.Wouldyoupleaseplantit?F.Buthowcanitbecomeabud?G.Rootsgrowintoplants・A:There'ssom
6、ethinggreeninapot・Whatsthat,Grandma?B:Oh,it'sabud・]A:Butwhatcanbecomeabud?B:2Iplantedaseedsomedaysago.A:3B:Eachseedhasaverysmallplantinsideit.Itcansproutatarighttimc.A:4B:Theyneedwater,therighttemperatureandagoodplace.A:Whatshallwedothen?B:Waterit.5A:O
7、K.1.2.3.4.5.VI.阅读理解(10分)Leavesarenature?sfoodfactories・Plantstakewaterfromthegroundthroughtheirroots・Theytakeakindofgascalledcarbondioxide(C02)fromtheair・PlantsusesunlighttoturnwaterandC02intoglucose・Glucoseisakindofsugar・Pla,ntsuseglucoseasfoodforener
8、gytogrow・ThewayplantsturnwaterandC02intoglucoseiscalledphotosynthesis.Thatmeans"puttingtogetherwithlight”.Achemicalcalledchlorophyllhelpsmakephotosynthesishappen.Chlorophyllisgreen.Itgivesplantstheirgreencolour・Assummerendsandautumncome
