The second paragraph focuses on the fact that ______.A.fossil energy was once very cheapB.

外语类 公共英语 已帮助 人

The second paragraph focuses on the fact that ______.

A.fossil energy was once very cheap

B.farm in dry areas could get cheap water

C.most American farmers used too much fertilizer and pesticide

D.mainstream American agriculture used to be wasteful of energy, water and land

请帮忙给出正确答案和分析,谢谢!

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