高三英语阅读理解限时训练（39）AAPlanForExploringMarsNASAismovingaheadwithplanstoputalong-armedLanderonMars’icyNorthPoletosearchforcluesforwaterandpossiblesignsoflife．The$386millionPhoenixMarsisplannedtotouchdownintheMartianarcticin2008．Thestationaryprobewilluseitsroboticarmtodigintotheicylandandpickupsoilsamplestoanalyze．In2002,theMarsOdysseyorbiterspottedevidenceofice-richsoilnearthearcticsurface．ScientistshopethePhoenixmissionwillfindcluestothegeologichistoryofwaterontheRedPlanetanddeterminewhethermicrobesexistedintheice．PhoenixwillbethefirstmissionoftheMarsScoutprogram,arenewed,low-costefforttostudytheRedPlanet．“ThePhoenixmissionexploresnewterritoryinthenorthernplainsofMarsanalogoustothepermafrostregionsonEarth,”PeterSmithsaid．Truetoitsname,Phoenixrosefromtheashesofpreviousmissions．ThelanderforPhoenixwasbuilttoflyaspartofthe2001MarsSurveyorprogram．Buttheprogrambrokedownafterthewell-knowndisappearanceoftheMarsPolarLanderin1999．ThePolarLanderlostcontactduringalandingattemptneartheplanet’ssouthpoleafteritsrocketengineshutoffprematurely,causingthespacecrafttofallabout130feettoalmostcertaindestruction．ThePhoenixprobehadbeeninstorageataLockheedMartincleanroominDenverbeforeitwasreusedforitspresentmission．ItwillcarryscienceinstrumentsthatweredesignedfortheMarsSurveyorprogramincludinganimprovedpanoramiccameraandatrench-diggingroboticarm．PhoenixwillliftofffromtheKennedySpaceCenterinAugust2007andlandontheplanetninemonthslater．41．Thepassagemainlytellsreadersthat_________．A．cluesofwaterwillbefoundinPhoenixB．PhoenixwillbesenttofindcluesofwateronMarsC．August2007willseePhoenixliftoffD．theMarsScoutprogramwillbecarriedout42．Accordingtothepassage,weknowPhoenixwilllandonMars_________．A．inMay2008B．inAugust2007C．inAugust2008D．inSeptember200843．AfterPhoenixlandsonMars,wecaninferitwillfirstly_________．A．findsoilsamplesandsendthemtotheearthB．lookfortheicylandtodigforthesoilsamplesC．takephotosandsendthemtotheearthD．findtheremainsoftheMarsPolarLanderBSomeweight-losscamps,whicharerareinChinajustafewyearsago,havesproutedinBeijing,Qingdao,Shenzhen,andothercities．Todayabout15percentofadults,or200millionChinese,arereportedlyoverweight．Ofthese,90million—about7percent—areobese（极肥胖的）．Expertssaytheobesityepidemicisspreadingtochildren,thoughmoreslowlythaninadults．Thetrend,theysay,willhaveahugeimpactonthehealthofChina’scitizensandeconomy．“We’reseeingaverylargeproportionofchildrenandadolescentswhoarequiteheavyandaren’tmovingmuch,”saidBarryPopkin,anutritionprofessor．Popkincarriesoutanongoinghealth-and-nutritionsurveyof16,000householdsinChina．Hesaysmorekidstodayareovereatingandputtingonweight“quitequickly”．InjusttenyearsChina’schildhoodobesityratehasdoubled,withthegreatestgainscominginurbanareas．“Inbigcitiesit’sabigproblem．”Someexpertsblametheextrafatonarangeoffactors,manyofthemtiedtoChina’srapidlychangingeconomyandculture．ThedietsofChineseadultsandchildrenarefarhigherincalorie-ladenmeat,fish,eggs,dairyproducts,fat,andsugarsthaneverbefore．Inaddition,kids—especiallycitydwellers—aremoresedentarytodayandspendmoretimeindoorsinfrontofhomework,television,computergames,andtheInternet．ShuwenNg,ahealtheconomist,saysthatkidsinChinanowhavepocketmoney,andtheyspendaportionofitonjunkfood．Ngaddsthatadvertisingandpeergroupsinfluencekids’foodchoice...
