Scientists（科学家）aretryingtomakethedeserts（沙漠）intogoodlandagain.Theywanttobringwatertothedeserts,sopeoplecanliveandgrowfood.Theyarelearningalotaboutthedeserts.Butmoreandmoreoftheearthis|小学科学问答-字典翻译问答网

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Scientists（科学家）aretryingtomakethedeserts（沙漠）intogoodlandagain.Theywanttobringwatertothedeserts,sopeoplecanliveandgrowfood.Theyarelearningalotaboutthedeserts.Butmoreandmoreoftheearthisbecomingdesertsallthetime.Scientistsmaynotbeabletochangethedeserts.Scientiststhinkthatpeoplemakedeserts.Peoplearedoingbadthingstotheearth.
Someplacesontheearthdon’tgetmuchrain.Buttheystilldon’tbecomedeserts.Thisisbecausesomegreenplantsaregrowingthere.Smallgreenplantsandgrassareveryhelpfultodry(干旱的)places.Plantsdon’tletthehotsunmaketheearthevendrier.Plantsdon’tletthewindblowtheearthaway.Whenalittlebitofrainfalls,theplantsholdthewater.Withoutplants,thelandcanbecomedesertsmuchmoreeasily.
小题1:Whycanthelandbecomedeserts?

A．Someplacesdon’tgetmuchrain.

B．Plantsdon’tletthehotsunmaketheearthevendrier.

C．Peopledon’tkeeptheearthwell.

D．Scientistshaven’tlearntenoughaboutthedeserts.

小题2:Scientistsare tomakethedesertsintogoodlandagain.A．carryingwaterB．growingfoodC．doingnothingD．studyingalot小题3:WhichisNOTtrue?A．Thelandneverstopsbecomingdeserts.B．Scientistsaskpeopletoliveinthedesertsandgrowfoodthere.C．Peopledobadthingstotheearth.D．Scientistsmaynotbeabletochangethedeserts.小题4:Whyaregreenplantsandgrasshelpful?A．Theycanholdthewater.B．Theycankeeptheearthwet.C．Theycanstopthewindfromblowingtheearthaway.D．Alltheabove.小题5:Whichisthebesttitle（题目）forthepassage?A．TheDesertProblemB．PeopleMakeDesertsC．GreenPlantsandGrassD．TheDeserts,theTreeandtheWater

楼森回答：

　　小题1:C小题2:D小题3:B小题4:D小题5:A 　　

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