2014年9月大学英语B题库阅读理解B.doc

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1、阅读理解Ｂ1、IfyoutravelbyairacrossthecenterofAfricaorSouthAmerica,youflyoverforestsforthousandsofkilometers.Thesegreatforestsaretheoceansoftrees.Therearethousandsandthousandsofdifferentkindsofplantsandanimals.However,theworld'sforestsaregettingsmallerallthetime.Wearecuttingdownthetreesbecauseweneedw

2、ood,andweneedmorefarmland.Somepeoplesaythattherewillnotbeanyforestslikethesein20or30years.Whatwillhappeniftheydisappear?Ifwecutdownourforests,alotofplantsandanimalswilldisappearfromtheworld.Inalotofplacesthenewfarmlandwillsoonlookliketheolddeserts.Cropswillnotgrowthere.Itwillnotrainveryoften,an

3、dtheweatherwillgetveryhot.Perhapstheclimateoftheworldwillchange.Thiswillbedangerousforeveryoneintheworld.Thatiswhywemusttakecareofourforests.(1)、Thepassagemainlytellsusabouttheimportanceoftakingcareofplants.A：TB：F答案：A(2)、Forestsarehomesfordifferentkindsofanimals.A：TB：F答案：A(3)、Theneedformorewood

4、andmorelandhelptoprotectourforests.A：TB：F答案：B(4)、We'llhavemoreandgreaterforestsnin20or30yearsinsomepeople'sview.A：TB：F答案：B(5)、Thewriterthinksitnecessarytoprotecttheforests.A：TB：F答案：A2、Nooneisgladtohearthathisbodyhastobecutopenbyasurgeonandpartofittakenout.Today,however,weneedn'tworryaboutfeelin

5、gpainduringtheoperation.Thesickpersonfallsintoakindofsleep,andwhenheawakes,theoperationisfinished.Butthesehappyconditionsarefairlynew.Itisnotmanyyearssinceamanwhohadtohaveoperationfeltallitspain.Longago,operationhadusuallytobedonewhilethesickmancouldfeeleverything.Soonafter1770,JoseptPriestleyd

6、iscoveredagaswhichisnowcalled"laughinggas".LaughinggasbecameknowninAmerica.Youngmenandwomenwenttopartiestotryit.Mostofthemspenttheirtimelaughing,butonemanataparty,HoraceWells,noticedthatpeopledidn'tseemtofeelpainwhentheywereusingthisgas.Hedecidedtomakeanexperimentonhimself.Heaskedafriendtohelph

7、im.Wellstooksomeofthegas,andhisfriendpulledoutoneofWell'steeth.Wellsfeltnopainatall.Ashedidn'tknowenoughaboutlaughinggas,hegaveamanlessgasthanheshouldhave.Themancriedoutwithpainwhenhistoothwasbeingpulledout.Wellstriedagain,butthis