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六、根据短文内容，选择正确答案。
Water is very special. It can change into different forms. When it is very cold, water becomes ice. Ice is a solid. We can hold it in our hands. When ice gets warm, it melts and becomes water again. Water is a liquid. It flows in rivers and lakes. When we heat water, it becomes steam. Steam is a gas. It goes up into the sky and makes clouds. Clouds can become rain or snow. Rain and snow are water too. So water is always changing, but it is still water. Isn’t it magic?
(
A. Two. B. Three. C. Four.
(
A. ice B. steam C. rain
(
A. solid B. liquid C. gas
(
A. It becomes ice.
B. It becomes steam.
C. It becomes snow.
(
A. Ice is a solid.
B. Water is a liquid.
C. Clouds are not water.
Water is very special. It can change into different forms. When it is very cold, water becomes ice. Ice is a solid. We can hold it in our hands. When ice gets warm, it melts and becomes water again. Water is a liquid. It flows in rivers and lakes. When we heat water, it becomes steam. Steam is a gas. It goes up into the sky and makes clouds. Clouds can become rain or snow. Rain and snow are water too. So water is always changing, but it is still water. Isn’t it magic?
(
B
) 1. How many forms can water change into?A. Two. B. Three. C. Four.
(
A
) 2. When water is very cold, it becomes ice
.A. ice B. steam C. rain
(
C
) 3. Steam is a gas
.A. solid B. liquid C. gas
(
B
) 4. What happens when we heat water?A. It becomes ice.
B. It becomes steam.
C. It becomes snow.
(
C
) 5. Which of the following is NOT true?A. Ice is a solid.
B. Water is a liquid.
C. Clouds are not water.
答案
1. B 2. A 3. C 4. B 5. C
