题目内容
（请给出正确答案）
提问人：网友z*****n
发布时间：2022年4月5日 21:49
[单项选择题]
Economically, the world can be divided into two parts. The difference between them is that one pa...All of the following suggestions are made in the second paragraph for the improvement of the land conditions in the poor countries except ().
A. new farming methods to be introduced
B. people to be educated
C. reliable sources of water and energy to be supplied
D. better living conditions to be provided
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