阅读理解训练题29

《阅读理解训练题29》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、阅读理解训练题（二十九）（A）Wind—eventheslightestofwindscanpreventfrost(霜冻).That’sbecausewindislikeaspooninyourcupoftea:itstirs（搅起）thingsdownandbringsdownalotofwarmairthatoftenfloatsjustabovehousetopsandtrees.Itmayseemstrange,buticeitselfsometimescanprotectcropsfromfrost.Somegrowersactuallysprayth

2、eircropswithwateronafreezingnight.Waterfreezesquicklyonplantsandthenastrangethinghappens.Aslongasicestayswet,itcan’tgetcolderthan32°F,atemperauremanyplantscanstand.Bycontinualsprayingwaterontheice,thegrowerskeepitfromgoingbelow32degreeseveniftheairismuchcolder.Thismaydefeatfrostandsav

3、esplants.Thisstrangekindof“iceblanket”worksonlyonplantsthatarestrongenoughtostandtheweightoffrozenspray.ThisisusedeventoprotectbananaplantsonsomeCentralAmericanfarms.56．Iftheicebecameentirelyfrozenanddry,supposewhatmighthappen.A．Theplantsmightbefrozentodeath.B．Theplantsmightbenefitfro

4、mit.C．Itmightsavetheplants.D．Itmightmaketheplantsgrowslowly.57．Icecansaveplantsratherthandestroythemonconditionthattheyare.A．sprayedregularlyB．quicklyfrozenC．notstrongenoughD．usedtofrost58．Thebesttitlewouldbe.A．FrostSavescropsB．IceBattleC．IceCanBeNiceD．IceIsGood59．Inwhichofthefollowin

5、gsentences“stand”hasthesamemeaningasinthelastparagraph?A．Hecouldhardlystand.B．Thishousestandsthetestoftime.C．Thetrainstoodforanhour.D．Hestandsinterribledanger.(B)Buildthehighwayandwatchthetowngrow.Atfirstafewshopsappearandmaybearestaurant.Thenahotelopens.Eventuallynewhousesarebuilt.Av

6、illageisborn.Thisisalsohowthevirtualworldhasdeveloped.ThinkoftheInternetastheroadcarryinginformationbetweentwocomputers.ThinkoftheWorldWideWebasthevillage.Atfirstitisjustaplaceonthevirtualroadwheretravelersmeet.Moretravelerscomebringingnewkindsofinformation.Newvillagesarestarted.Every

7、villagehasafounder.TimBernersLeeisthemanwhowrotethesoftwareprogramthatledtothefoundationoftheWorldWideWeb.Howdidhegettheidea?Hetellsusonhisownwebsite:“Oneofthethingscomputerswerenotabletodowasstorecontactsfromdifferentsources.ThedreambehindtheWebisofacommonspaceinwhichwecommunicatebys

8、harin