In?recently?years,dust storms?happen more often than before?in?the?north?of?Chinese. They?have?brought much trouble to people's?life. The strong wind?blows up the dust and made the air very dirty.It?also stops?many of?people?from?going out.In a past,people raised a large number of sheep. The sheep eat up a great?deal of?grass?and?the?land became?sandy.Now?the?government?having?begun to pay?attention?at?this?problem.Each?year,a?lot?of money?spent?on?the?improvement?of?the environment. |
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