[答案]
1.A 2.A 3.B 4.C
【解析】
【原文】W:Hello!Welcometoouronlineparentteachermeeting.Wearesoexcitedtoshareinformationaboutournextfieldtripforfirstandsecondgradeclass.WewillbegoingtotheHandsOnChildren'sMuseuminOlympiawherethekidswillbeabletoseeexhibitsonartandscience.ThedateforthefieldtripisTuesday,28thFebruary.Sowewillleavetheschoolat10amandarriveatthemuseumaround10:30,andheadbacktotheschoolaround12:30pm.Wewillgetafreebusride,whichisawesomebecauseitwillsaveusalotofmoney.Thecostperchildisstillnotconfirmedbecausewearewaitingforthemuseumtoapplyadiscount,butitshouldnotbemorethan8dollars.Themuseumrequiresonevolunteerparentforevery5children,sowewillneedatleasttenofthem.Alsoasareminderthatchildrenneedtopacktheirownlunch.Ifyouwishtoattendthefieldtripandvolunteer,pleaseletusknowviaemail,byaddingyournametothelistlinkedbelowassoonaspossible.
【题干】 ChinalandedaspacecraftonMarsforthefirsttimelastSaturday.ThismakesChinathefirstcountrytomakeasuccessfullandingonMarsonitsfirstmissiontoMars.China'sZhurongrover(探测车),namedafteratraditionalChinesefiregod,hastoucheddownonthemartiansurface,theChinaNationalSpaceAdministrationconfirmedonthemorningofSaturday,May15.
TheroverispartoftheTianwen﹣1mission,whichconsistsofanorbiter,aprobe,andalander.Themissionwaslaunchedinsummerlastyear,andtooksevenmonthstocompleteitsjourneytotheredplanet.ItarrivedatMarsinFebruarythisyear,andsincethenthespacecrafthasbeenperformingoperationssuchascapturingimagesofMars.
Believeitornot,travelingtoMarsisactuallytheeasypartofsuchamission.Thetrulyhardpartislandingontheplanet'ssurface,aslandersmustcontendwithfactorsliketheplanet'sthinatmosphere,itsvariableduststorms,andacommunicationdelaybetweenMarsandEarth.ThisdelaymakesitimpossibleforpeopleinmissioncontrolonEarthtocontrolacraftinrealtimeasitapproachestheplanet,sothelandingmustbeperformedautonomously.
Toslowitsspeedasthelanderapproachedthesurface,itusedbothaparachute(降落伞)andaretrorocket(减速火箭)initsown"sevenminutesofterror"asitmovedthroughtheatmosphere.ItthenlandedintheUtopiaPlanitiaarea,alargeimpactbasin,partofwhichwasexplodedbyNASA'sViking2landerinthe1970s.
AccordingtoChina'sslatenewsagencyXinhua,PresidentXiJinpingsaidhewassending"warmcongratulationsandsinceregreetingstoallmemberswhohaveparticipatedintheMarsexplorationmission."
Theroverwillnowbeginitsthree﹣monthmissiontoexploretheUtopiaPlanitiaarea,whereitwillbesearchingforsurfaceandsubsurfaceice.Themissionwillinvolveboththeroverandtheorbiterworkinginconcerttocreateamapofwaterice,withtheorbiterfocusingontheplanet'spolarregions.
(1)WhichofthefollowingstatementsisTRUEaccordingtothepassage? D
A.TheTianwen﹣1missionincludesfourspacemissions.
B.ZhurongwasknownasagreatastronomerinancientChina.
C.Thespacecrafthascarriedoutaseriesofexperimentsinadvance.
D.ChinaachievedsuccessinlandingonMarscreatinganewrecord.
(2