We must always be careful with ______. It's our good servant as well as a dangerous enemy. [ ]A

题目简介

We must always be careful with ______. It's our good servant as well as a dangerous enemy. [ ]A

题目详情

We must always be careful with ______. It's our good servant as well as a dangerous enemy.
[     ]
A. electricity
B. electrical
C. electric
D. electronic
题型:单选题难度:中档来源:模拟题

答案

A

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