6.A　推理判断题。根据最后一段的第一句“Mr.Tilman calls the link between the diet,the environment and human health...a difficult choice”可知,Tilman先生把日常饮食、环境和人的健康之间的联系称为三难困境。由此可知,它们三个是紧密相关的,故选A项。

　　7.D　推理判断题。根据第二段的最后一句“He found that as nations industrialized (工业化),population increased and earnings rose,more people began to adopt what has been called the Western diet”可推知,工业化、人口增长和收入增加造成了西方饮食的传播,故D项正确。

　　8.B　写作意图题。综合全文,尤其是根据文章最后一段的最后一句可知,西方饮食有害健康,不利于环境,故作者是想通过该文让人们警惕西方饮食带来的危害。

　　.1~5 GCDBE

　　Ⅲ.One possible version:

　　Dear fellow students,

　　In the last few weeks,wasting water has become a serious problem on our campus.

　　As we know,there has been little rainfall this year and wasting water may lead to the problem of water shortage that we can’t answer for.Now drought is already threatening agriculture which farmers depend on to earn their living.Therefore,I advocate everybody should take action to save water before the problem is beyond our control.

　　There are several means we can adopt to help save water.To begin with,stop leaving the taps running after washing our hands.Apart from this in the dormitory,we’d better take quick showers.Another good idea is to collect the water used to clean the classrooms.

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