课时作业(十九)[必修4Unit4Bodylanguage](限时：35分钟)Ⅰ.单项填空1．________theexperimentright，Itriedagainandsucceeded.A．NothavingdoneB．HavingnotdoneC．NotdoingD．Notdone2．Mikewasn'thappyaboutwhatJasonsaid,and________．A．IwasnorB．norwasIC．IwaseitherD．eitherwasI3．—Whatdoyoumeanbysayingthat?—Ithinkyou________whatIhadsaid.Imeantnoharm.A．understoodB．misunderstoodC．amusedD．caught4．Thechildrenwerewarnedofnotbeingtoo________aboutthingstheyarenotsupposedtoknow.A．strangeB．amusingC．curiousD．satisfied5．[2012·山东卷]Aftercompletingandsigningit,pleasereturntheformtousintheenvelope________.A.providingB.providedC.havingprovidedD.provide6．—“DearFrank,whenwillourweddingbe？”—“Ah,when?Godknows.”Hesaid,and________awayfromher,walkedrapidlyaway.A．turningB．turnedC．turnD．toturn7．Thekitchenisoftenthebusiestroominahousehold,soit'simportanttomakesureit________well.A．smoothesB．functionsC．paysD．measures8．Jane'salwaysnervouswhenshehastomakeaspeech;shemustaccustomherselftobe________whensheiswithpeople.A．ateaseB．indisguiseC．atriskD．inrelief9．Peopleinthesecountriesdemandequaltreatmentforall，________race,religionorsex.A．indefenceofB．regardlessofC．insteadofD．insupportof10．Althoughthecoupledidn'tchoosetosleepinthewildinsteadofinthehotel,it________unexpectedlybeautiful.A．turnedupB．turnedoutC．turneddownD．turnedaround11．Theresultsofthesportsmeetingwillbe________onSundaymorning.A．putawayB．putoffC．putupD．putdown12．Iguesswe'vealreadytalkedaboutthisbeforebutI'llaskyouagainjust________．A．bynatureB．inreturnC．incaseD．bychance13．—Havethepeacetalksbrokendown?—Yes.Armedconflictis________tobreakoutbetweenthetwocountries.A．likelyB．possiblyC．probablyD．gradually14．Ericdidn'tfeelat________easeintheparty，becausehewasafraidoflosing________face.A．the;aB．an;/C．/;theD．/;/15．—Wouldshemindplayingagainstherformerteammates?—________Sheiswillingtoplayagainstanytoughplayers.A．Ithinkso.B．I'mnotsurprised.C．Ofcourse.D．Notlikely!Ⅱ.阅读理解AUSresearchershavefoundtracesofanancientlakeonMarsrecently,increasinghopesofdiscoveringevidencethatbillionsofyearsagotheredplanethostedlife.Thelake,whichdatesbacksome3.4billionyears,appearstohavecoveredasmuchas80squaremilesandwasupto1，500feetdeep,saidtheteamfromtheUniversityofColorado.“ThisisthefirstclearevidenceofshorelinesonthesurfaceofMars，”saidBoulder'sresearchassociate,GaetanoDiAchille,inastudypublishedinthelatesteditionofGeophysicalResearchLetters.“Theidentificationoftheshorelinesandaccompanyinggeologicalevidenceallowsustocalculatethesizeandvolumeofthelake,whichappearstohaveformedabout3.4billionyearsago.”Analysisoftheimageshasshownthewatercarvedoutthecanyon(溪谷)inwhichitwasfound,whichthenopenedoutintoavalleydepositing(使淤积)sediment(沉积物)whichformedadelta(三角洲)．“Findingshorelinesisagreatdiscoverytous”，saidassistantprofessorBrianHynek,addingitshowedthelakeexistedatatimewhenMarswasthoughttohavebeencoldanddry.ScientistsbelievetheoldestsurfacesonMarsformedduringthewetandwarmeraknownastheNoachanepoch,about4.1billionto3.7billionyearsago.ThenewlydiscoveredlakeisbelievedtodatefromtheHesperianeraandpostdatestheendofthewarmandwetperiodonMarsby300millionyears,accordingtothestudy.ScientistsbelievedeltasnexttothelakemaywellholdsecretsaboutpastlifeonMarsassuchplacesonEarthhavebecomethenaturaldepositsoforganiccar...
