题目内容

【题目】《黄河妈妈》歌词写到“走出冰川的时候，你是那样的清亮，等你经过了……你就把那晶亮变成浑黄”。读歌词和黄河流域局部示意图，回答下列各题。

【1】“走出冰川的时候，你是那样的清亮……”此时黄河流淌在甲段，位于(　　)

A. 黄土高原 B. 内蒙古高原

C. 青藏高原 D. 华北平原

【2】地势阶梯分界线上的山脉有(　　)

A. ①和④ B. ②和④ C. ①和③ D. ②和③

【3】对图中各河段的描述正确的是(　　)

A. 甲处水流速度缓慢 B. 乙处江阔水深

C. 丙处没有支流 D. 丁处形成地上河

【答案】

【1】C

【2】A

【3】D

【解析】黄土高原位于我国北方地区，属于温带季风气候，受自然原因与人文原因的影响的影响，这里是世界上水土流失最严重的地区。

【1】由图可知，甲段位于黄河的上游发源地，是我国海拔最高的青藏高原，平均海拔在4000米以上，有“世界屋脊”称号，故选C。

【2】由图可知，图中①是祁连山，②是贺兰山，③是阴山山脉，④是太行山，其中祁连山是第一、第二阶梯的分界线，贺兰山和阴山是季风与非季风的分界线，太行山是第二、第三阶梯的分界线，故选A。

【3】由图可知，甲处处于河流发源地，河流流速快，乙河段河流狭窄；丙处是黄河支流最多的河段；丁处是黄河的下游河段，形成了“地上河”，故选D。

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Do you remember your dreams? Do people have the same dreams? Why do I dream?

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A. People always ask questions in their dreams.

B. People never dream in their last REM cycle.

C. The first REM cycle is the shortest of the five.

D. It’s impossible for people to remember their dreams.

【2】According to the article, why do people sometimes have the same dream again and again?

A. Because they are worried about something.

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C. Because they want to remember the dream clearly.

D. Because other people ask them too many questions.

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