被称为“塞上江南”的是（） A．河西走廊 B．宁夏平原 _爱下问搜题

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问题选择题

被称为“塞上江南”的是（）

A．河西走廊

B．宁夏平原

C．准葛尔盆地

D．湟水谷地

答案

答案：B

题目分析：黄河在流经宁夏回族自治区和内蒙古自治区时，先后冲积了宁夏平原和河套平原，两大平原得益于黄河水的灌溉，瓜果粮棉生长的非常好，形成了如今的“塞上江南”，可见“塞上江南”指的是宁夏平原和河套平原，故选B．

完形填空

选词填空（10分）

Stay, far, carry, then, fall, do, leave, down, push, high

A rain drop fell to the ground on the side of a hill. The rain drop ran 1 the hill into a small river. The small river 2 the rain drop to a big river. There the rain drop travelled 3 to the east and mixed itself with salt of the sea. The sun shone brightly. It warmed the water on the surface of the sea. Though the water became warm, some of it turned into water vapor.
So 4 the water of the rain drop. The water vapor 5 the sea and went into the air. It do not carry the salt.
The cold air 6 the warm air 7 above the ground. The warm air became cool when it went up. 8 the water vapor of the rain drop turned into small drops gathered bigger and bigger drops. At last they became so big that they were too heavy to 9 in the cloud, and they 10 to the ground. So the rain drop would start another trip to the sea.

问答题简答题

为什么在短基线GPS测量时一般都采用双差固定解？