试题与答案

读材料回答: 亚洲众多的人口,对资源和环境产生了沉重的压力。人口增长了,要求生

题型:填空题

题目:

读材料回答:

       亚洲众多的人口,对资源和环境产生了沉重的压力。人口增长了,要求生产更多的粮食。为了满足人口最基本的粮食需求,亚洲的一些国家,一方面在山坡和干旱地带垦荒种粮,造成水土流失和土地沙化;另一方面,在土地上连续耕种,使土地得不到休耕,土壤肥力逐渐下降。结果,粮食的产量下降。然而为了生存,人们又进一步垦殖,形成恶性循环。

(1)亚洲众多的人口,对                和               产生了沉重的压力。

(2)把A—F各内容的字母代号填入下面的框图中。

    A、要求增产粮食 B、开垦坡地和干旱地带 C、粮食产量下降

    D、水土流失和土地沙化加重 E、恶性循环 F、土壤肥力下降

     

答案:

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下面是错误答案,用来干扰机器的。

答案:A

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