paperplanetpeaceskypollutionseafutureenvironmentearth一、SectionA单词预习。1.纸;纸张________2.行星_________3.和平__________4.天空______5.污染;污染物___________6.海;海洋_______7.未来的_________8.环境______________9.地球_________oncomputerswillbefree二、SectionA重点短语及目标句型预习。1.Theywillstudyathomeoncomputers.他们将在家里的电脑上学习。oncomputer在电脑上20年后,学生们将在电脑上学习。Studentswillstudy______________in20years.2.Everythingwillbefree.每件东西都将会是免费的。free免费的明天的午餐将免费。Lunch______________tomorrow.dogslivetobetalkaboutthefuture3.Peoplewilllivetobe200yearsold.人们将会活到200岁。livetobe…活到……狗能活多少年?Howmanyyearscan_________________?4.What’syourpredictionaboutthefuture?关于未来你有什么样的预测?aboutthefuture关于未来年轻人喜欢谈论未来。Youngpeopleliketo_______________________.Therewillbeareingreatdanger5.Therewillbefewerpeople.将会有更少的人。Therewillbe将会有/将会存在东莞将会更少的污染。_______________lesspollutioninDongguan.6.Theenvironmentwillbeingreatdanger.环境将处于极大的危险中。beindanger处于危险之中老虎们正处于极大的危险中,我们应该努力保护它们。Tigers_____________________,soweshouldtrytoprotectthem.playpartweatherbelike7.Everyoneshouldplayapartinsavingtheearth.每个人都应该在拯救地球这一工作中发挥作用。playapartin+(动)名词在……中起作用机器人将会在人们的生活中起到重要的作用。Robotswill______animportant______inpeople’slife.8.Sowhatwillthefuturebelike?那么未来将会是什么样子的?明天的天气将会是什么样子的?Whatwillthe_________________tomorrow?三、完形填空。Inrecent(最近的)years,thingshavechangedalot.Ithinklifeinthe1willbemoreunbelievable.Perhaps,therewillbefewerpeople2ontheearthinthefuture.Wherewillthehumansgo?Wemaylivefarawayfromthe3.MaybeMars(火星)isthebestplacetoliveon.Peoplewillgetthere4spaceship.Butthey5paymuchmoneyfor6.Why?Becausethedevelopmentofscienceandtechnologywillmakeiteasy.Beforethetrip,everybodyneedstobooka7andbuyakindofsuit,whichtheywillwearinthespace,itcanmakethemwalkaroundMarsanddotheirjobs8onMars.Theywill9needto10theircreditcards(信用卡)withthem.Moneywillnotbeseenatthattime.Therewillbehouses,banks,shops,andschoolsontheMars.Everyoneinthefuturewillhavemorefreetimetoenjoytheirlivesbecausetheywillhaverobotstohelpthemdomostoftheboringjobs.ACBDDBABAA()1.A.tomorrowB.daysC.earthD.future()2.A.liveB.livingC.livedD.lives()3.A.sunB.earthC.moonD.mars()4.A.byB.atC.forD.in()5.A.won’tB.can’tC.don’tD.mustn’t()6.A.himB.itC.themD.us()7.A.seatB.roomC.placeD.ticket()8.A.easilyB.heavierC.worriedlyD.interestingly()9.A.tooB.eitherC.alsoD.sometimes()10.A.takeB.haveC.giveD.buy四、短文填空。Billlivesinaveryfarvillage.Heknowslittleabouttheoutsideworld1henevergetsoutofhisvillage.Oneday,hegotaradio2hisunclewholivesinthecity.Hewasveryexcitedand3theradiotoallhisfriends.“Great!”Sheela,oneofhis4said.“Couldyoupleasegetoneforme,too?”anotherfriendMashiasked.OfcourseBillfeltveryproudofthe5.However,theradio6workingonlyafewdayslater.Billwasverysadbutdidn’tknow7todo.Afriendofhistold8togototherepair(修理)shopintown.Sohedid.Themanintheshop9twodeadcockroaches(蟑螂)intheradio.Billstartedcrying.Themanwassurprised,“Whyareyou10,myboy?”Billsaid,“Becausethetwosingersdiedinmyradio.HowamIgoingtolistentonicesongs?”becausefromshowedfriendsradiostoppedwhathimfoundcrying1.________2._____3._______4.________5._______6.________7._____8.____9.______10.__________一、压强知识点一知识点二知识点一、压力、压强1.在下图中能够正确表示压力的是() 2.坐沙发比坐木椅舒服,是因为()A.弹簧的弹力和人的重力平衡B.弹簧弹力和人体对沙发的压力平衡C.弹簧弹力减小了人体对沙发的压力D.人体和沙发的接触面积较大CD3.垂直压在物体表面上的力叫压力。方向和物体表面垂直。4.铁钉越尖,越易被钉入木板,说明压力的作用效果与受力面积有关。知识点一知识点二知识点二、增大、减小压强的方法5.如图所示的做法中,为了减小压强的是()A知识点一知识点二6.生物进化过程中,生物的某些部位长成了特殊的形状,这有利于生物的生存。如图所示,啄木鸟的嘴是通过减小受力面积而增大压强的。一些高层建筑的地基建得很宽大是为了增大受力面积,减小压强。