题目内容

哑变量可以用来反映某个变量的不同类别。

A. 对
B. 错

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The reduction in energy consumption can be _____ in a few ways

A. reached
B. achieve
C. achieved
D. reach

Carbon _____ in a low-carbon challenge.

A. emissions
B. emit
C. emission
D. emitted

汽油(选美国英语翻译)

A. oil
B. diesel
C. petrol
D. gas

汽油(选英国英语翻译)

A. oil
B. diesel
C. petrol
D. gas

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