单选题：In order to prevent desertification,the author proposes ___.

题目分类：理工类
题目类型：单选题
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题目内容：

In order to prevent desertification,the author proposes ___. A．making good use of international aids
B．developing a sustainableagricultural economy
C．gaining international support
D．converting agricultural land intoforest

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答案解析：

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