WhenisTreePlantingDayinChina?March12.holen.洞largeadj.大的;巨大的rootn.根seedlingn.幼苗;秧苗coverv.覆盖n.盖子fillv.装满；充满dirtn.泥土;污物dirtyadj.不干净的;肮脏的dustn.沙土;尘土;灰尘stormn.暴风雨duststorm沙尘暴northernadj.北方的;北部的bottomn.底部;最下部Readthelessonandwritetrue(T)orfalse(F).1.LiMingandWangMeiwerehavingapicniconafarm.2.Theyaskedateacherforhelp.3.LiMingsawanothergroupofpeopleonthehillside.4.WangMeireallylikedtheproject.Fillintheblankswiththewordsinthebox.Thenputthestepsforplantingatreeinthecorrectorder.bottomholearoundcoverrootsPutthe_______oftheseedingintothehole.Putalittlewaterinthe_______ofthehole.________therootsandfilltheholewithdirt.Packthedirt_______thenewtreewithyourfeet.Diga_____bigenoughtoholdtherootsoftheseeding.bottomCoveraroundholerootsDoyouknowsomethingabouttheGreenGreatWall?1978年12月，党中央、国务院为改变西北、华北北部、东北西部地区缺林少水生态失调的状况，决定建设一个大型防护林体系工程――“三北”防护林体系工程。三北的防护林体系工程，是一项改造大自然、造福子孙后代的宏伟而艰巨的工程。它东起黑龙江，西迄新疆，横贯黑龙江、吉林、辽宁、北京、河北、山西、内蒙古、陕西、甘肃、青海、新疆等省、市、自治区的396个县旗，东西长7000公里，万里长城由东到西所经的200多个县、旗，基本上全部包括在这一工程体系之内。所以社会上普遍称“三北”的防护林为绿色万里长城。Completethepassagewiththemissingphrases.A.theGreatGreenWallB.plantingmoretreesC.duststormsD.thenorthernpartTheGreenGreatWallwasbuiltacross_______thecountry.WhatistheGreenGreatWall?Itismadeupofstripsofhuman-plantedforest.Eachyear____blowalotofsoilofftheland.Thingsaregettingmoreandmoreserious.DCAbout3600squarekilometresofgrasslandaretakenbytheGobiDeserteveryyear.TheGreenGreatWallprojectstartedin1978.By______,peopleholdbacktheexpansionofthedesertandraisenorthernChina’sforestcoverageby5%to15%.Bytheyear2050,______willbeabout2800mileslong.BA1.Now,puttheseedlinginside,covertherootsandfilltheholewithdirt.现在，把种子放在里面，覆盖根，用土把洞填满。fill…with…用……填满e.g.Fillapanwithwater.给平底锅装满...
