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  3. The first paragraph uses several examples to convey the ideas that______. What can we infer from the passage?

The first paragraph uses several examples to convey the ideas that______. What can we infer from the passage?

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问题 The first paragraph uses several examples to convey the ideas that______.
What can we infer from the passage?
选项 A、Human can be totally replaced by machines in agriculture.
B、We cannot see mechanization in Africa,
C、As long as adaptations been made, mechanization will be used in agriculture in tropical area.
D、The number of farmers who run a farm in America is less than that of the farmer who run a farm of under developed countries.
答案D
解析 事实推断题。文章虽然指出机械化发展很快，但并未提及人类将在农业生产中完全被替代；文章说机械化在非洲和拉丁美洲的许多地方还未使用，但没有说那里完全没有机械农具，最后一段则指出在热带地区实行机械化的问题很复杂，需要仔细规划；只有答案选项正确，这可以从第四段第二句得到验证。
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