A-A+
As we all know telephone wires are______ by a
问题详情
As we all know, telephone wires are______ by a covering of rubber of paper.
A．wedged
B．strapped
C．insulated
D．stiffened请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：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。
