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AWind—eventheslightestofwindscanpreventfrost(霜冻).That’sbecausewindislikeaspooninyourcupoftea:itstirs（搅起）thingsdownandbringsdownalotofwarmairthatoftenfloatsjustabovehousetopsandtrees.Itmayseemstrange,buticeitselfsometimescanprotectcropsfromfrost.Somegrowersactuallyspraytheircropswithwateronafreezingnight.Waterfreezesquicklyonplantsandthenastrangethinghappens.Aslongasicestayswet,itcan’tgetcolderthan32°F,atemperauremanyplantscanstand.Bycontinualsprayingwaterontheice,thegrowerskeepitfromgoingbelow32degreeseveniftheairismuchcolder.Thismaydefeatfrostandsavesplants.Thisstrangekindof“iceblanket”worksonlyonplantsthatarestrongenoughtostandtheweightoffrozenspray.ThisisusedeventoprotectbananaplantsonsomeCentralAmericanfarms.1．Iftheicebecameentirelyfrozenanddry,supposewhatmighthappen.A．Theplantsmightbefrozentodeath.B．Theplantsmightbenefitfromit.C．Itmightsavetheplants.D．Itmightmaketheplantsgrowslowly.2．Icecansaveplantsratherthandestroythemonconditionthattheyare.A．sprayedregularlyB．quicklyfrozenC．notstrongenoughD．usedtofrost3．Thebesttitlewouldbe.A．FrostSavescropsB．IceBattleC．IceCanBeNiceD．IceIsGood4．Inwhichofthefollowingsentences“stand”hasthesamemeaningasinthelastparagraph?A．Hecouldhardlystand.B．Thishousestandsthetestoftime.C．Thetrainstoodforanhour.D．Hestandsinterribledanger.BBuildthehighwayandwatchthetowngrow.Atfirstafewshopsappearandmaybearestaurant.Thenahotelopens.Eventuallynewhousesarebuilt.Avillageisborn.Thisisalsohowthevirtualworldhasdeveloped.ThinkoftheInternetastheroadcarryinginformationbetweentwocomputers.ThinkoftheWorldWideWebasthevillage.Atfirstitisjustaplaceonthevirtualroadwheretravelersmeet.Moretravelerscomebringingnewkindsofinformation.Newvillagesarestarted.Everyvillagehasafounder.TimBernersLeeisthemanwhowrotethesoftwareprogramthatledtothefoundationoftheWorldWideWeb.Howdidhegettheidea?Hetellsusonhisownwebsite:“Oneofthethingscomputerswerenotabletodowasstorecontactsfromdifferentsources.ThedreambehindtheWebisofacommonspaceinwhichwecommunicatebysharinginformation.”TimBernersLeecouldhavefollowedtheMicrosoftroutebyformingacompanytoselltheprogramsheinvented.Orhecouldhavejoinedanexistingcompany.ButinhisviewtheWebisalanguage,notaproduct.ChargingafeeforusinghisprogramswouldhaveslowedthegrowthoftheWeb.Andothercompanieswouldmakesimilarproductstocompete.InsteadofoneWorldWideWebtherewouldbeseveralsmallerWebs.Eachwoulduseincompatible（不相容的）software.TheWebisvaluablebecauseitusesacommoncomputerlanguagetoreachpeopleandshareinformation.CompetingWebswouldlosethisvalue.ImagineifsomebodysentyouabilleverytimeyouspokeawordofEnglish.In1994TimBernersLeeformedWorldWideWebConsortium,orW3C.Morethan200leadingcompaniesandlaboratoriesarerepresentedbyW3C.TogethertheymakesurethateveryonenomatterwhattheirequipmentorsoftwareiscanworkequallyontheWeb.“TheWebcanhelppeopletounderstandthewaythatothersliveandlove.Ithelpsusunderstandthehumanityofpeople,”hesays.5．Whichappearedfirst,theWebortheInternet?A．TheWeb.B．TheInternetC．Theyappearedatthesametime.D．Thereisnoclueinthepassage.6．Whatdoestheunderlinedpart“thevirtualworld”referto?A．Thecomputersystem.B．ScientificresearchC．AlltheinformationontheWebandtheInternet.D．PeopleworkingontheWebandtheInternet7．Whatcanbeinferredfromthesentence“ImagineifsomebodysentyouabilleverytimeyouspokeawordofEnglish?A．TheinformationontheWebshouldbesharedbyall.B．TheWebiswhereallkindsofinformationarestored.C．PeoplecangetallkindsofinformationontheWeb.D．PeoplecancommunicateontheWeb.8．Whichisthemainideaofthepassage?A．HowTimBernersLeefoundedtheWorldWideWeb.B．TheadvantageofworkingontheWorldWideWeb.C．WhyTimBernersLeewantedtofoundtheWorldWideWeb.D．ThebuildingofWorldWideWebissimilartothebuildingofhighways.CFOREIGNEXCHANGEACLASSOETHEIROWNName:SusanLaneAge:22Place:Reykjavik,Iceland,1994Cost:$7,000Organization:AFSExperience:“Ithinkitwasaturningpointinmylife.Ibegantounderstandmoreaboutmyownculturebyexperiencinganothercultureandseeinghowotherpeoplelive.”Name:SaraSmallAge:23Place:Crivitz,Germany,1996Cost:$8,000Organization:EFFoundationExperience:“IlovedthetravelingandImadealotoffriends.IfoundtheEuropeanschoolsystemtobehardbutIamfluentnowinGermansoitwasworthit.IdidmissmyfamilyandfriendsinAustraliabutIwouldlovetodoitagain.”Name:LeanneSmytheAge:20Place:Minnesota,America,1994Cost:$6,000Organization:SouthernCrossCulturalExchangeExperience:“Ilearnthowtobereallyresponsible.ItwasgreattobeonmyownandIgotonreallywellwiththefamilyIwaswith.Iwilldefinitelygobackoneday.”Name:DavidLinksAge:16Place:Stuttgart,Germany,1996.Cost:$6,000Organization:SouthernCrossCulturalExchangeExperience:“IwantedtotrysomethingthatwasverydifferenttoAustraliainculture.InGermanyeverythingwasdifferentbutIsoongotsettled.ThefamilyIwaswithweregreatandIreallyfeelasthoughIhaveasecondfamily.”Name:TomJenningsAge:21Place:Conflans,France,1995Cost:$7,000Organization:SouthernCrossCulturalExchangeExperience:“ThereweretimeswhenitwasdifficultbutIlikedit,experiencingadifferentculture.Youjusthavetoplayeachsituationasitcomes.Ifthereisonethingyoulearnwhenyouareonastudent-exchangeprogramitishowtotakecare