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1EvaluationWarning:ThedocumentwascreatedwithSpire.Docfor.NET.第六天单句改错1、Everypossiblemeanshavebeenusedtopreventthepollution,buttheskyisstillgray.__________________________________________________________________________________________________________________________________________2、Myunclehasboughtsomebooks,eachofthemisworthreading._____________________________________________________________________3、ItisthefirsttimethatIcametoBeijing._____________________________________________________________________4、WemeetonthelastFridayofeverymonthtotalkaboutpoemsandpoetswhichwelike.__________________________________________________________________________________________________________________________________________5、Atonepointweweresohighthatwefounduscyclingthroughclouds._____________________________________________________________________6、IrememberthatitwasintheclassroomwhereImetJim.Hewasreadingthen.__________________________________________________________________________________________________________________________________________7、短语选变填quiteafewhavenoeffectonundernocircumstancestellsboffchargeoffleaveadeepimpressiononnothinglikeenthusiasticabouttakepartinintheenddivideintobeboredwith1.Thekidsweremakingsomuchnoisethattheirmother__________.2.Theelephants__________andquicklydisappearedfromoursightwhenhearing2warningsfromfourkilometersaway.3.Williamisnot__________beingascientistordoctor.Allhewantsistobeisanactor.4.When__________smallgroups,theclasscanbeeasytomanageforteachers.5.__________touristsfloodinChengduduringthenationalholidayeveryyear,makingthecitystreetsevenbusierthanusual.6.Lilyis__________hermother,whoisacarefulwoman.Lilyissocareless.7.Whathesaid__________me,encouragingmetoovercomeallthedifficulties.8.__________canyoutalktoherlikethat.Sheisyourmotherafterall.9.Peopletendtohavemuchpassionforthingsatthebeginningbutgivethemup__________.10.Samstillfeelspainfulaftertakingthemedicine.It__________him.阅读理解8Eachcountryhasmanykindpeoplewhovolunteer(志愿)totakecareofothers.Forexample,somehighschoolanduniversitystudentsintheUSoftenspendmanyhoursasvolunteersinhospitaloroldpeople'shomes.Theyreadbooksforthepeopleortheyjustvisitthemandplaygameswiththemorlistentotheirproblems.Otheryoungvolunteersgoandworkinthehomesofthesickpeople.Theycleanuptheirhousesordotheshopping.Forboyswhodon'thavefathersthereisanorganizationcalledBigBrothers.Universitystudentsandotherpeopletaketheseboystoplaybaseballgamesandhelpthemgettoknowthingsthatboysusuallylearnfromtheirfathers.Eachcityhasalotofclubswhereboysandgirlscangotoplaygamesorjoininotheractivities.Someoftheseclubsshowmoviesorhaveshorttripstothemountains,thebeachesorthemuseums.Mostoftheseclubsusealotofhighschoolanduniversitystudentsasvolunteersbecausetheycanunderstandtheproblemsoftheseboysandgirlsmoreeasily.Volunteersbelievethatsomeofthehappiestpeopleintheworldarethosewhohelptobringhappinesstoothers.31.WhatisBigBrothers?A.It'sanameofaclub.B.It'sanorganizationforboyswhodon'thavefathers.C.It'sthehomeforchildrenwhohavenobrothers.D.It'sthenameofafamousmovie.2.Whydomostoftheclubsusealotofhighschoolanduniversitystudentsasvolunteers?A.Becausetheycanonlyhelptheboys.B.Becausetheyaretooyoungtogetalongwellwiththechildren.C.Becausetheycanunderstandtheproblemsofyoungerchildren.D.Becausetheyhavemorefreetime.3.Whatdovolunteersbelieve?A.Thehappiestpeopleintheworldarethosewhojoinsomeclubs.B.Thehappiestpeopleintheworldarethosewhoareyoungandhealthy.C.Thehappiestpeopleintheworldarethosewhomakethemselveshappy.D.Bringinghappinesstoothersmakethemthehappiestpeopleintheworld.4.Whatmightbethebesttitleforthepassage?A.BigBrothersintheUS.B.VolunteerWorkintheUS.C.ClubsintheUS.D.StudentsintheUS.9、Ithaslongbeenthoughtthatelephantsrelyontheirlargeearsandbathinginriverstostaycoolinhotclimates.Newresearch,however,hasshowedthattheworld'slargestlandanimalshaveasecrettrickofcontrollingtheirbodytemperatures.Scientistshavelongbeenpuzzledbytemperatureregulation(调节)inelephants.Generally,animalswithlargebodiestendtoholdmoreheatbecause,comparedtotheirsize,theyhaveasmallsurfaceareaforheattoescapefrom.Elephants,withtheirheavyweightframes,wouldappeartobeatadisadvantage4intheheatoftheirAfricanandAsianhabitats,especiallybecausetheyhavethickfurtoprotectthemfrombushesandtrees.Scientiststhoughtthatthesecreatures,whichweighupto13tonswhenfullygrown,growlargeearstohelpthemstaycool.Theskinontheearsisthinner,sobloodwhichflowsintothemcoolsdownmoreeasily.ButfindingsbyresearchersattwouniversitiesinViennahaveshowedthatelephantsarealsoabletocooldownbyincreasingthebloodflowtoskinpatches(斑)inotherpartsoftheirbodies.TheresearchersstudiedsixAfricanelephantsatViennaZooastheymovedbetweenoutdoorandindoorenvironmentstoseehowthetemperatureontheirskinsurfacewouldchange.Theyfoundupto15“hotspots”alloveranelephant'sbodysurface,inadditiontolargepatchesontheears.Thestudyshowshowthesepatchesexpandastheairtemperatureincreasesandmorebloodflowsnearertotheskinsurface.Otherexperimentsshowthatelephantsinthewildusethesame“windows”tocontroltheirbodytemperat