The telephone system is no longer operative.

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问题 The telephone system is no longer operative.

选项 A、running
B、moving
C、rotating
D、working

答案D

解析 operative:运作的。work:运作的。We have many radars operative.我们有许多雷达在运转着。The old theory doesn’t work.旧的理论已经不灵了。run:经营。She runs a small shop.她经营着一个小店。move:移动。The earth moves round the sun.地球绕着太阳转。 rotate:转。The earth rotates round the sun.地球绕着太阳转。
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