Module4SandstormsinAsiaPeriod3GrammarⅠ
阅读理解MostofthesandstormsthathadsweptChinalastyearcamefromforeignland,aChineseofficialinchargeofdesertificationcontrolsaidonMonday
Andtheinvasions(入侵)couldpartlyexplainthefrequentsandstormsinthecountryinrecentyearsdespiteitsachievementsindesertificationcontrol
Sincethestartoflastspring,thenorthernandnorthwesternChineseregionshadbeenhitby17sandstorms,ofwhich,adozencamefromforeignland
Situatedinthecentral-Asiasandstormregion,oneoftheworld’sfourlargestsandstormsources,ChinaalsosuffersfromsandstormsfromoutsidethecountrywhilebeingblamedasasandsourcetonortheastAsia
TheotherthreemajorsourcesareinAfrica,NorthAmericaandAustralia
Thelandsufferingfromdesertificationhasbeendecreasingby7,585squarekilometresannuallyinChina,andtheareaofsandylandhasalsobeenfallingby1,2