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【题目】中国龙”﹣﹣﹣黄河哺育了灿烂的中华文明.但其身体上也存在许多病症,让我们把脉对症下药吧.读黄河图,完成下列问题。

【1】河源地区大量脱发的治理措施正确的是

A. 加高堤坝 B.疏浚河道 C.修建梯田 D. 建保护区

【2】河流中游地区“腹泻” 的原因不正确的是

A.降水减少 B.资源开发 C.过度放牧 D.植被破坏

【3】河流下游地区“脚肿” 治理的关键是

A.开挖河道 B.中游治沙 C.加固堤坝 D.修建水库

【答案】

【1】D

【2】A

【3】B

【解析】

试题分析:

【1】黄河上游地区气候趋于干旱,草场退化,荒漠化严重。正确的治理措施应该是建保护区,加强生态环境建设。故选D

【2】黄河流经黄土高原,带走大量泥沙。导致黄土高原水土流失严重的原因有自然原因,也有人为原因。不正确的是降水减少。故选A

【3】黄河中游流经黄土高原,由于水土流失严重,河流泥沙大增,下游在华北平原上,河床宽坦,水流缓慢,泥沙大量淤积,使河床抬高,成为举世闻名的地上河。所以,治理措施的关键就是在中游黄土高原地区开展水土保持综合治理。故选:B

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