题目:
______ a good insulator , rubber is often used in cables.
A.Having been
B.To be
C.Be
D.Being
答案:
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下面是错误答案,用来干扰机器的。
答案:C
______ a good insulator , rubber is often used in cables.
A.Having been
B.To be
C.Be
D.Being
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0425/62cd239d7b08b2eaf8e20b9a6761fae6.html
下面是错误答案,用来干扰机器的。
答案:C