Unit4AstronomythescienceofthestarsⅠ.单句语法填空1．Readinginbedwilldoharm________youreyes.2．Itisimpossibleforacocktolay________(egg)．3．(2015·浙江，16)Ifsteelisheavierthanwater，whyareshipsable________(float)onthesea?4．(2014·江西，阅读A)Inhisblackandbluesuitandwith________oxygentankfastenedonhisback，Larrydivedfromboatsintothemiddleoftheocean.5．(2014·福建，阅读B)Theclimatehere________(be)quitepleasant，thetemperaturerarely，ifever，reaching30℃insummer.6．Oursuccessdepends________whethereveryoneworkshard.7．(2015·陕西，阅读C)Thedestructionofsuchspeciescouldpreventresearchers________(find)curesforcertaindiseases.8．Itwasdifficultforthehelicopters________(get)closetotheroofofthebuildingbecauseoftheheavysmoke.9．(2013·天津，6)Wehavelaunchedanotherman－madesatellite，________isannouncedintoday'snewspaper.10．Nowthattheyhavecomputers，itbecomes________(easy)todealwiththeproblems.答案1.to2.eggs3.tofloat4.an5.is6.on7．finding8.toget9.which10.easierⅡ.单句改错1．Ifyouputyourheartintoit，you'llsucceedontime.2．ThisissuchinterestingafilmthatIhaveseenittwice.3．It'snolongeraquestionnowthatwhethermancanlandonthemoon.4．Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonifthisproblemcanbesolved.5．Generalspeaking，heisasmartboyexcepthiscarelessness.6．Theriverissopollutedthateverydaywecanseealotofthingsbeingfloatingonthewater.答案1.on→in2.such→so3.去掉whether4.if→whether5.General→Generally6.去掉beingⅢ.课文浓缩语法填空Theexplosionoftheearthproducedwatervapour，__1__turnedintowaterwhentheearth__2__(cool)down.Waterallowedtheearthtodissolveharmfulgasesintotheoceansandseas.Thatmade__3__possibleforlifetobegintodevelop.The__4__(arrive)ofsmallplantsencouragedthedevelopment__5__earlyshellfishandall__6__(sort)offish.Manymillionsofyearslaterthefirstgreenplantsbegantoappearonland.__7__(late)landanimalsappeared.Somewereinsects.Others，calledamphibians，__8__(be)abletoliveonlandaswellasinthewater.Finally，somesmallcleveranimalsappearedandspreadallovertheearth.Buttheytreattheplanetinan__9__(friend)way，andtheearthbecomestoo__10__(pollute)．答案1.which2.cooled3.it4.arrival5.of6．sorts7.Later8.were9.unfriendly10.pollutedⅣ.单元考点作文串记一、根据提示翻译句子1．我们能否登上火星依赖于科学技术的发展。(land，dependon)__________________________________________________________________2．火星上没有氧气，昼夜温差大，这使我们不能生活在那里。(makeit＋adj.)__________________________________________________________________3．火星与地球环境完全不同。(bedifferentfrom)__________________________________________________________________4．如果我们想到火星上住些日子，我们要带上氧气、食物、衣服等。(takealong...with)__________________________________________________________________5．我坚信不久的将来我们一定能成功地登上火星。(succeedindoing)__________________________________________________________________答案1.WhetherwecanlandonMarsdependsonthedevelopmentofscienceandtechnology.2．ThereisnooxygenonMarsandthetemperaturechangesgreatlyfromdaytonight，whichmakesitimpossibleforustolivethere.3．TheenvironmentofMarsisquitedifferentfromthatofourearth.4．IfwewanttostayonMarsforafewdays，weshouldhavetotakealongourownoxygen，food，clothingandsoonwithus.5．IfirmlybelievethatwewillsucceedinlandingonMarsinthenearfuture.二、连句成篇【参考范文】WhetherwecanlandonMarsdependsonthedevelopmentofscienceandtechnology.ThereisnooxygenonMarsandthetemperaturechangesgreatlyfromdaytonight，whichmakesitimpossibleforustolivethere.Asweallknow，theenvironmentofMarsisquitedifferentfromthatofourearth.Infact，ifwewanttostayonMarsforafewdays，weshouldhavetotakealongourownoxygen，food，clothingandsoonwithus.However，IfirmlybelievethatwewillsucceedinlandingonMarsinthenearfuture.
