外研版必修三模块4高一英语教案

about110millionpeoplesufferfromdesertificationandanother2，2004，thesandwillwin"HisworryisunderstandableEveryyear，givingtheskyayellowappearanceNorthwesternGansuProvincewastheworstaffectedareaOnevillagersaid，日月无光的景象呢？你可曾想过谁是造成这种灾害的罪魁祸首呢？其实就是我们人类自己，OnMarch10，你可曾目睹过沙尘暴袭来时天地昏黄，"There’snothingtodobutdigawaythesandnonstopandwaittoseewhathappensSometimesIdreamofthesandfallingaroundmefasterthanIcandigawayIworrythatinreallife，butitisamongtheworld’slargestWhatcausestheterriblesandstorm?TheanswerisobviousYearsofheavyfarmingandanimalgrazinginthenorthernChinaarethemajorreasonsDuetothis，500sqkmturnstodeserteachyearFewpeoplethinkofChinaasadesertnation，GiantsandstormhitnorthernChina如果你生活在北方，strongwindsfromRussia’sSiberiakickedupcloudsofdustandsandThusnorthernChinawashitbytheseason’sfirstmajorsandstormThethickyellowgloomslowedtrafficandforcedairportsandschoolstoclose，thelandofvegetationthatprotectsthesoilisdisappearingTheexposedearthbecomesadustbowleasilysweptupbythestro，