Official 32 Lec 3
答题结果:0/6
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Question 1 of 6
What is the lecture mainly about?

A.

The environmental effects of heap roasting

B.

The reforestation efforts in the Copper Basin

C.

The process of mining and producing copper

D.

Damages caused during an attempt to clean up industrial waste

我的答案:

正确答案:A

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