B.ewaste deserves to be made good use of
C.natural minerals contain more precious metals
D.the percentage of precious metals is heavy in ewaste
答案:B 推断判断题。结合第二段第一句“Electronic devices contain valuable metals such as gold and silver.”可知,该段主要讲述电子设备中包含有很多贵重的金属;下文引用瑞士的研究进一步论证电子垃圾中的贵重金属含量比自然矿产中的高。由此可知,作者提及瑞士的研究旨在告诉我们电子垃圾应该得到很好的利用。故正确答案为B。
.The responsibility of ewaste treatment should be extended________.
A.from producers to governments
B.from governments to producers
C.from individuals to distributors
D.from distributors to governments
答案:B 细节理解题。结合文章最后一句“...a primary goal of laws requiring extended producer responsibility is to transfer both the costs and the physical responsibility of waste management from the government and taxpayers back to the producers.”可知,电子垃圾的责任应该从政府延伸到生产者。故正确答案为B。
3.What does the passage mainly talk about?
A.The increase in ewaste.
B.The creation of ewaste.
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