The problem of population is mainly man-made. Two different points are made in the essay about tile efficient use of land, one

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问题 The problem of population is mainly man-made.
Two different points are made in the essay about tile efficient use of land, one of them is that some countries use old -fashioned methods of cultivation and therefore get a low yield, the other point is the certain kinds of fond require more land than others.

选项 A、Y
B、N
C、NG

答案A

解析 13—15段说到在土地使用的充分程度上有很大差别。
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