2. 外语
  3. As we all know, telephone wires are______ by a covering of rubber of paper.

As we all know, telephone wires are______ by a covering of rubber of paper.

admin2011-02-25  55
问题 As we all know, telephone wires are______ by a covering of rubber of paper.
选项 A、wedged
B、strapped
C、insulated
D、stiffened
答案C
解析 题意是：电话线通过一层橡皮纸而被______。  [C]insulated“使绝缘”，符合题意。  [A]wedged“楔入，楔进”，  [B]strapped“拿带子捆扎”，  [D] stiffened“使变硬，使僵硬”都与题意不符。
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大学英语六级

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