2. 外语
  3. A、The problems of environment pollution. B、A material which can save fuel. C、The installation of pollution filters. D、The way to

A、The problems of environment pollution. B、A material which can save fuel. C、The installation of pollution filters. D、The way to

admin2013-03-11  16
问题
选项 A、The problems of environment pollution.
B、A material which can save fuel.
C、The installation of pollution filters.
D、The way to spray a coat on the engines.
答案B
解析 对话中后面，两人讨论的是一种被称作coniine oxide的绝缘材料及其作用，故选B)项。
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大学英语四级

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