Official 32 Lec 3
Question 6 of 6
What resulted from the lack of trees near the copper-mining operation?

A.

It became difficult to provide housing for all the workers.

B.

Rivers became filled with toxic soil.

C.

Coal and other fuel had to be transported into the area.

D.

The heap-roasting process had to be completed far from the mines.

正确答案:B

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