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201910Passage1Ifyoulookattheskyonenightandseesomethingmovingandshiningthatyouhaveneverseenbefore,itmightbeacomet().Acometsometimeslookslikeastar.Likeaplanet,acomethasnolightofitsown.Itshinesfromthesunlightitreflects().Liketheearth,acometgoesroundthesun,butonamuchlongerpath()thantheearthtravels.Ifacometisntastar,whatisitthen?Somescientiststhinkthatalargepartofacometiswaterfrozenintopiecesoficeandmixedwithironandrockdustandperhapsafewbigpiecesofrock.Whensunshinemelts()theiceinthecomet,greatcloudsofgasgotrailingafterit.Theseclouds,togetherwiththedust,formalongtail.Manypeopleperhapshaveseenacomet.Howevernooneknowshowmanycometsthereare.Theremaybemillionsofcomets,butonlyafewcomecloseenoughforustosee.AnEnglishmannamedEdmundHalley,wholivedfrom1656to1742,foundoutalotaboutthepathsthatcometstakethroughthesky.Somecometsmoveoutofoursightandnevercomeback.Otherskeepcomingbackatregulartimes.AbigcometthatkeepscomingbackwasnamedafterHalleybecausehewastheonewhoworkedoutwhenitwouldcomebackagain.MaybeyouhaveeverseenHalleysCometsbecausethelasttimeitcameclosetothesunandtheearthwasintheyear1986.Thenpeopleallovertheworldwereoutsideatnighttolookatit.YouwillprobablybeabletoseeHalleysCometswhenitcomesneartheearthagain.1.Acometislike________.A.sunB.moonC.sunlightD.theearth2.Alargepartofacometis______.A.waterandrockB.waterfrozenintopiecesoficeandmixedwithironC.ice,ironandrockdustD.onlyafewbigpiecesofrock3.Maybemanypeople_______.A.haventseenanycometsB.haveseenallcometsC.haveseenacometatdaytimeD.haveseenacomet4.Somecometskeepcomingback________.A.atanytimeB.atnoonC.atregulartimesD.atdaytime5.HalleysCometscameback_____.A.in1990B.in1980C.in1986D.in1989Passage11.DLiketheearth,acometgoesroundthesun,but2.Ciswaterfrozenintopiecesoficeandmixedwithironandrockdustandperhapsafewbigpiecesofrock.3.DManypeopleperhapshaveseenacomet.4.CSomecometsmoveoutofoursightandnevercomeback.Otherskeepcomingbackatregulartimes.5.Cthelasttimeitcameclosetothesunandtheearthwasintheyear1986.Passage2Afarmerhadacow.Hetookverygoodcareofthiscowandonedaywhenitwasill,hewasveryworried.Hetelephonedthevet.Whatstheproblem?Thevetaskedhimwhenhearrived.Mycow'sill,thefarmersaid.Idontknowwhat'sthematterwithher.Sheslyingdownandwonteat.She'smakingastrangenoise.Thevetlookedoverthecow.She'scertainlyill,hesaid,andsheneedstotakesomeverystrongmedicine.Hetookabottleoutofhisbox,puttwopillsintohishandandsaid,Giveherthese.Thepillsshouldmakeherbetter.HowshouldIgivethemtoher?thefarmerasked.Thevetgavehimatube()andsaid,Putthistubeinhermouth,thenputthepillsinthetubeandblow.That'llmakeit.Thenextdaythevetcametothefarmagain.Thefarmerwassittingoutsidehishouseandlookedmoreworried.How'syourcow?thevetasked.Nochange,thefarmersaid,andImfeelingverystrangemyself.Oh?thevetsaid,Why?Ididwhatyousaid,thefarmeranswered.Iputthetubeinthecow'smouthandthenputtwopillsdownit.And?thevetasked.Thecowblewfirst,thefarmersaid.1.Inthestory,thevetmustbe_________.A.thefarmer'sfriendB.amilkfactoryC.ahospitalforcowsD.adoctorforanimals2.Thefarmeraskedthevetforhelpwhenhiscow_______A.couldn'tliedownB.didn'teatthepillsC.couldn'tmakeanynoiseD.wasill3.Whatmedicinedidthevetgivethefarmer?A.Bottleofpills.B.Alongtube.C.Twopills.D.Asmallbox.4.Thevettaughtthefarmerhow_________.A.toblowthetubeB.tomakethecowtakethepillsC.totakethemedicineD.toputthetubeinhismouth5.Whichofthefollowingistrue?A.Thefarmeratethepillshimself.B.Thecowgotbetteraftertakingthemedicine.C.Thevetcametohelpfarmerchangethecowthenextday.D.Thefarmerwaitedforthevetoutsidehishousethenextday.Passage21.DD2.DSheslyingdownandwonteat.She'smakingastrangenoise.ABC3.CHetookabottleoutofhisbox,puttwopillsintohishand4.BHowshouldIgivethemtoher?5.A.Passage3OnNovember18th,1908,threemenwentupinaballoon.TheystartedearlyinLondon.TheheadmanwasAugusteGaudron,andtheothertwomenwereTannarandMaitland.Theyhadabigballoon,andtheywerereadyforalongway.Soontheyheardtheseabelowthem.Theywerecarryingtheusualrope,anditwashangingdownfromthebasketoftheballoon.Attheendoftheropetheyhadtiedametalbox.Thiscouldholdwater.Oritcouldbeempty.Sotheywereabletochangeitsweight.Theywerealsocarryingsomebagsofsand.Afterthesunrose,theballoonwenthigher.Itwentupto3,000meters,andtheairwasverycold.Thewaterintheballoonbecameice.Snowfellpastthemensbasket,andtheycouldseemoresnowontheground.Therewasalsosomesnowontheballoon,andthatmadeitveryheavy.Itbegantogodowntowardstheground.Thementriedtothrowoutsomemoresand;butitwashard.Theytriedtobreaktheicysandwiththeirknives,butitwasnoteasy.Theworkwasslowandtheywerestillfalling;sotheyhadtodropsomewholebagsofsand.Oneofthemfellonanicylakebelowandmadeablackholeintheice.Atlasttheypulledtheboxintothebasket.Itwasstillsnowing;sotheyclimbedtogetawayfromthesnow.Theyroseto5,100meters!Everythingbecameicy.Theyweresocoldthattheydecidedtoland.TheycamedowninPolandheavilybutsafely.Theyhadtraveled1,797kilometersfromLondon!1.Threemenflewinaballoon_________.A.morethanacenturyagoB.tovisitPolandC.fornearly1,800kilometersD.toanothercity2.Themetalboxwasusedfor_______.A.changingweightB.carryingropesofthebasketC.keepingdrinkingwat