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1EvaluationWarning:ThedocumentwascreatedwithSpire.Docfor.NET.课下能力提升(十八)Ⅰ.根据提示写出单词的正确形式1．Astheeconomydevelops,thenaturalincomegoesupwithaleap(飞跃)．2．Theseforeignershaveputforwardaproposalforajoint(联合的)venture.3．Theword“explode”means“toburst(爆炸)withalotofforceandloudnoise”．4．Willyouactaswitness(见证人)totheagreementbetweenus?5．Over3millionviewerstune(收看)intoourshowdaily.6．Heisfamiliarwithalltheimportanthistoric(history)events.7．TheancientEgyptianshadadvanced(advance)civilizations.8．Afterwaitingforanhour,Iwasbeginningtorunoutofpatience(patient)．9．Notaccustomed(accustom)toassociatingwithbusinesspeople,shedecidedtobeateacheraftergraduation.10．Howcouldyoumakeanassumption(assume)aboutherwithoutmeetingher?Ⅱ.选词填空attheverybeginningof，setfooton，beaccustomedto，eversince，inshock，beawareof，inspiteof，makeit1．Ihaven'theardfromhimever_sincelastyear.2．Everybodyis_aware_oftheimportanceoftheskill.3．Theyelectedhimmonitorat_the_very_beginning_oftheterm.4．Heremainsexcellentinhisstudiesatschoolin_spite_ofhavingtodoparttimejobseverynowandthen.5．Sinceentryintohighschoolthestudentshavebeen_accustomed_tostayinguplateintheeveningandgettingupearlyinthemorning.6．Workhard,andyou'llmake_iteventually.7．Hewasstillin_shockfromwhathadhappenedearlierintheafternoon.8．Nobodyhaseverset_foot_onthatisland.Ⅲ.完成句子1．她一听到这个悲伤的消息，就失声痛哭起来。Scarcelyhadsheheardthesadnewswhensheburst_out_crying/burst_into_tears.2．两个故事我都不喜欢，因为这个故事并不比那个故事有趣。Ilikeneitherofthetwostories.Forthisstoryisno_more_interesting_thanthatone.3．我习惯于在睡觉前听一些轻音乐。Iam_accustomed_to_listening_tosomelightmusic.4．他夹着一大本书，走出了图书馆。Hecameoutofthelibrary,a_large_book_under_his_arm.5．你的作业下周一必须上交。Yourhomeworkis_to_be_handed_innextMonday.Ⅳ.阅读理解ASaturn'sicymoonEnceladuscouldtheoreticallybehometomethaneproducing(产甲烷的)alienlife,NASAsaid.Researchersmadetheannouncementbasedondatafrom2015,whenthespacecraftCassinidetectedthepresenceofhydrogenduringaflightthroughacloudofgasandiceeruptingfromEnceladus'southpole.Thehydrogencouldbeasignofmethanogenesis,aformofbreathinwhichmicrobes(微生物)producemethane.Thisisaverysignificantfindingbecausethehydrogencouldbeapotentialsourceofchemicalenergyforanymicrobes2thatmightbeinEnceladus'ocean，”LindaSpilker,ascientistatNASA'sJetPropulsionLaboratory,saidatapressconference.“WenowknowthatEnceladushasalmostalloftheingredientsyouwouldneedtosupportlifeasweknowitonEarth.”ThefindingswerepublishedinthejournalScience.“Thisistheclosestwe'vecome,sofar,toidentifyingaplacewithsomeoftheingredientsneededforahabitableenvironment，”ThomasZurbuchen,associateadministratorforNASA'sScienceMissionDirectorate,saidinastatement.“TheseresultsdemonstratethenatureofNASA'ssciencemissionsthataregettingusclosertoansweringwhetherweareindeedaloneornot.”NASAalsoannouncedthattheHubbleSpaceTelescopeobservedwhatmayhavebeenwatervaporemergingfromthesurfaceofJupiter'smoonEuropain2014,andagainaroundthesameareain2016.ConfirmingtheexistenceofEuropa'sgaswouldallowresearcherstostudythatmoon'schemicalmakeupwithouthavingtodigthroughmilesoficycrust(表面).TheCassiniandHubblediscoveriesrelatedtothese“oceanworlds”willhelpscientistsplanNASA'sEuropaClippermission,settolaunchinthe2020s.TheplanisfortheunmannedspacecrafttoorbitJupiterandperformadetailedinvestigationofEuropa.“Thesediscoveriesarecomingjustattheperfecttime，”JimGreen,directorofNASA'sPlanetaryScienceDivision,said.“Itenablesustomaketherightsetofobservationsthatcantellusmuchmoreabouttheseoceanworlds,Europainparticular.”语篇解读：本文是说明文。飞船探测到气体，表明土卫二可能存在外星生命。1．Thenewdiscoverymadethescientistsfeelmore________.A．confidentB．doubtfulC．worriedD．confused解析：选A细节理解题。由第二段中的“Thisisaverysignificantfinding”，第三段中的“Thisistheclosestwe'vecome”及最后一段中的“Thesediscoveriesarecomingjustattheperfecttime”可知，新的发现让科学家们对探测外星生命的任务更加有信心。2．Accordingtothetext,NASA'ssciencemissionsaimto________.A．makespacetravelarealityB．analyzeJupiter'schemicalmakeupC．findoutwhetherlifeexistsoutsideEarthD．exploretheresourcesonSaturn'sicymoon解析：选C细节理解题。由第三段中的“TheseresultsdemonstratethenatureofNASA'ssciencemissionsthataregettingusclosertoansweringwhetherweareindeedaloneornot”可知，NASA科学任务的本质是弄清是否只有地球上存在生命。3．Whichwouldbeasuitabletitleforthetext?A．ThereislifeoutsideEarthB．EnceladuscouldharboralienlifeC．AnewstudyaboutSaturnbeginsD．NASAisplanningalandingonJupiter解析：选B标题归纳题。本文重点在于告诉我们最近发现土卫二南极有氢气，这个迹象可能是外星生命存在的证明。故B项最适合作文章标题。BTheoddnessoflifeinspaceneverquitegoesaway.Herearesomeexamples.Firstconsidersomethingassimpleassleep.Itspositionpresentsitsownchallenges.Themainquestioniswhetheryouwantyourarmsinsideoroutsidethesleepingbag.Ifyouleaveyourarmsout,theyfloatfreeinzerogravity,often3givingasleepingastronautthelookofafunnyballet(芭蕾)dancer.“I'maninsideguy，”MikeHopkinssays,whoreturnedfromasixmonthtourontheInternationalSpaceStation.“Iliketobewrappedup.”Onthestation,theordinarybecomesstrange.TheexercisebikefortheAmericanastronautshasnohandlebars.Italsohasnoseat.Withnogravity,it'sjustaseasytopedalviolently.Youcanwatchamoviewhileyoupedalbyfloatingamicrocomputeranywhereyouwant.Butstationresidentshavetobecarefulaboutstayinginoneplacetoolong.Withoutgravityt