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阅读理解 Water is very important to living things. Without water there can be no life on the earth. All animals and plants need water. Man also needs water. We need water to drink, to cook our food and to clean ourselves. Water is needed in offices, factories and schools. Water is needed everywhere. There is water in seas, rivers and lakes. Water is found almost everywhere. Even in the desert part of the world, there is some water in the air. You can not see or feel it when it is a part of the air. The water in the seas, rivers and lakes is a liquid, the water in the air is a gas, and we call it water vapor (蒸气). Clouds are made of water. They may be made of very small drops of water. They may also be made of snow crystal s(结晶体). Snow crystals are very small crystals of ice. Ice is frozen water. It is a solid. There can be snow and ice everywhere in winter. Water may be a solid or a liquid or a gas. When it is a solid, it may be as hard as a stone. When it is a liquid, you can drink it. When it is a gas, you can not see or feel it. 1. Where can we find water? A. We can find water when it turns into vapor. B. Water can be found almost everywhere. C. We can see water in deserts here and there. D. Water is only in seas and rivers. 2. We can drink water when it is____. A. a liquid B. a solid C. in the air D. turned into ice 3. Clouds are made of A. seas, rivers and lakes B. blocks of ice C. very small drops of water or snow crystals D. solid, liquid and gas 4. Water has three states(状态). They are ____. A. ice, snow and air B. solid, vapor, snow C. drops of water, blocks of ice and crystals of water D. solid, liquid and gas
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举一反三
【判断题】当各类的协方差矩阵相等时,分类面为超平面,并且与两类的中心连线垂直。
A.
正确
B.
错误
【多选题】路基在哪些情况下宜修建挡土墙
A.
沿河水流冲刷路段
B.
建筑物、文化古迹等需要特殊保护的路段
C.
地下岩溶发育路段
D.
膨胀土填筑的路基边坡路段
【多选题】路基在哪些情况下宜修建挡土墙
A.
陡坡路段或岩石风化的路堑边坡路段
B.
需要降低路基边坡高度以减少工程量的路段
C.
地下水位较高路段
D.
地震多发地区
【单选题】气缸套主要有(   )些形式
A.
干式
B.
湿式
C.
干式和湿式
D.
以上都不对
【简答题】T接线器的话音存储器SM用来存储(),每个单元的位元数至少为()位,控制存储器CM用来存储处理机的控制命令字,控制命令字的主要内容是用来指示吸入或读出的()
【单选题】百部的杀虫作用不包括以下哪一种虫 ( )
A.
蛲虫
B.
绦虫
C.
阴道滴虫
D.
头虱
E.
疥癣
【简答题】你在哪里出生长大?说的是哪里的方言?(个别不会说方言的同学,则回答“你的普通话受哪里方言影响最大”) 例如:我在江西省抚州市黎川县出生长大,我说的是黎川方言。
【判断题】外汇市场交易双方必须遵守恪守信用,遵循“一言为定”的惯例
A.
正确
B.
错误
【判断题】五年来,我们党解决了许多长期想解决而没有解决的难题,办成了许多过去想办而没有办成的大事,推动党和国家事业发生历史性变革。( )
A.
正确
B.
错误
【判断题】当各类的协方差矩阵相等时,分类面为超平面,并且与两类的中心连线垂直。
A.
正确
B.
错误
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