题目

 Today some people get ______ because they eat too much fat and sugar and don’t take enough ______. A. fatter and fatter; exercise             B. fatter and fatter; exercises C. thinner and thinner; exercise          D. thinner and thinner; exercises 答案:  A随着海峡两岸交流日益增强,通过“零关税”进入我市的一种台湾水果,其进货成本是每吨0.5万元,这种水果市场上的销售量y(吨)是每吨的销售价x(万元)的一次函数,且x=0.6时,y=2.4;x=1时,y=2.(1)求出销售量y(吨)与每吨的销售价x(万元)之间的函数关系式;(2)若销售利润为w(万元),请写出w与x之间的函数关系式,并求出销售价为每吨2万元时的销售利润.
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