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【題目】《黃河?jì)寢尅犯柙~寫到“走出冰川的時(shí)候,你是那樣的清亮,等你經(jīng)過(guò)了……你就把那晶亮變成渾黃”。讀歌詞和黃河流域局部示意圖,回答下列各題。

1“走出冰川的時(shí)候,你是那樣的清亮……”此時(shí)黃河流淌在甲段,位于(  )

A. 黃土高原 B. 內(nèi)蒙古高原

C. 青藏高原 D. 華北平原

2地勢(shì)階梯分界線上的山脈有(  )

A. ①和④ B. ②和④ C. ①和③ D. ②和③

3對(duì)圖中各河段的描述正確的是(  )

A. 甲處水流速度緩慢 B. 乙處江闊水深

C. 丙處沒(méi)有支流 D. 丁處形成地上河

【答案】

1C

2A

3D

【解析】黃土高原位于我國(guó)北方地區(qū),屬于溫帶季風(fēng)氣候,受自然原因與人文原因的影響的影響,這里是世界上水土流失最嚴(yán)重的地區(qū)。

1由圖可知,甲段位于黃河的上游發(fā)源地,是我國(guó)海拔最高的青藏高原,平均海拔在4000米以上,有“世界屋脊”稱號(hào),故選C。

2由圖可知,圖中①是祁連山,②是賀蘭山,③是陰山山脈,④是太行山,其中祁連山是第一、第二階梯的分界線,賀蘭山和陰山是季風(fēng)與非季風(fēng)的分界線,太行山是第二、第三階梯的分界線,故選A。

3由圖可知,甲處處于河流發(fā)源地,河流流速快,乙河段河流狹窄;丙處是黃河支流最多的河段;丁處是黃河的下游河段,形成了“地上河”,故選D。

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