1九年级阅读训练中考英语阅读训练(一)In1620,abouthalftheUSAwascoveredbyforests.Todaytheforestshavealmostgone.Alotofgoodlandhasgonewiththem,leavingonlysand.Chinadoesn'twanttocopytheUSA'sexample.We'replantingmoreandmoretrees.We'vebuiltthe"GreatGreenWall"oftreesacrossnorthernpartofourcountry.TheGreatGreenWallis7,000kilometreslong,andbetween400and1,700kilometreswide.Itwillstopthewindfromblowingtheearthaway.Itwillstopthesandfrommovingtowardstherichfarmlandinthesouth.More"GreatGreenWalls"areneeded.Treesmustbegrownallovertheworld.GreatGreenWallswillmaketheworldbetter.根据短文内容,选择正确答案
1.In1620,about______theUSAwascoveredbyforests.A.athirdB.halfC.twothirdsD.afourth2.Alotofgoodlandhasgonewith______.A.sandB.waterC.windD.forests3.TheGreatGreenWallinChinais______long.A.7,000kilometersB.1,700kilometersC.7,000metersD.400kilo