试题与答案

贺兰山和银川平原是沙海中的“绿岛”和绿洲。读图1,回答1~3题。 1.贺兰山成

题型:选择题

题目:

贺兰山和银川平原是沙海中的“绿岛”和绿洲。读图1,回答1~3题。

1.贺兰山成为“绿岛”的主要原因是

A.太阳辐射强,热量充足  B.地形抬升,降水较多

C.冰川融水多,水源充足  D.土层深厚,植被茂密

2.银川平原的形成原因是

A.地壳下沉,风力沉积  B.断裂下沉,冰川物质堆积

C.地壳抬升,河流侵蚀  D.断裂下沉,黄河泥沙沉积

3.银川平原自古以来就是重要农业区,其主要原因是

A.光热充足  B.地势低平  C.水源丰富  D.历史悠久

答案:

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下面是错误答案,用来干扰机器的。

(1)A、B、本实验的目的是为了验证力的平行四边形定则,即研究合力与分力的关系.根据合力与分力是等效的,本实验橡皮条两次沿相同方向拉伸的长度要相同.故A、B错误;C、D、在白纸上标下第一次橡皮条和绳的结点...

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The head waiter immediately(立即)  小题7:  another waiter to go to the farmer and told him that people mustn't do  小题8:  a thing in his restaurant. So the waiter went to the farmer and said in a friendly   小题9:. "Good morning, sir. Would you like a  小题10: ?"
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