【解析】
试题分析:文章解释了生活在海洋的透明生物的特点,透明原理,以及形成机制。
【考点定位】科技类说明文
【名师点睛】做科技类说明文时,考生应能:理解语篇主旨要义,理解文中具体信息,根据上下文提供的线索推测生词的词义,根据文中事实和线索作出简单的判断和推理。此次出现了新型科技类说明文。往年科技类说明文的阅读难点在于专业类词汇,但是今年的“新型耳机”在问题设置上难度不大,属于文章难但题目不难的题目。所以要理解好文章做好此题就不是难题。
3.【2015·江苏】B
In the United States alone, over 100 million cell-phones are thrown away each year. Cell-phones are part of a growing mountain of electronic waste like computers and personal digital assistants. The electronic waste stream is increasing three times faster than traditional garbage as a whole.
Electronic devices contain valuable metals such as gold and silver. A Swiss study reported that while the weight of electronic goods represented by precious metals was relatively small in comparison to total waste, the concentration (含量) of gold and other precious metals was higher in
So-called e-waste than in naturally occurring minerals.
Electronic wastes also contain many poisonous metals. Even when the machines are recycled and the harmful metals removed, the recycling process often is carried out in poor countries, in practically uncontrolled ways which allow many poisonous substances to escape into the environment.
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