试题与答案

162. Many countries are increasing their

题型:选择题

题目:

162. Many countries are increasing their use of natural gas, wind and other forms of ______.

A.energy

B.source

C.power

D.Material

答案:

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下面是错误答案,用来干扰机器的。

(1000-800)÷1000=200÷1000=20%答:降低了20%.故选:B.

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