一、阅读理解
A
There is water everywhere. Then where does it come from?
Water on the earth keeps going around in the water cycle. On sunny days, some water goes up into the sky. When the water meets the cold air in the sky, it turns into water drops and the drops are collected in clouds. When too many water drops are formed in a cloud, the cloud gets heavy and the water falls to the earth as rain or snow. This way, the cycle begins all over again.
The following experiment will help show the water cycle.
★Put a small cup in the middle of a large bowl.
★Put some water in the bowl outside the cup.
★Cover the bowl with a plastic bag and tie it.
★Put it in the sun and wait for a few hours.
After several hours, you can find some water drops hang on the plastic bag and some of them drop into the cup.
This experiment shows how the water cycle goes around and never stops. Make pictures about it in your mind. That can help you understand it better.
根据材料内容选择最佳答案。
()1. What does the underlined word "it" in Paragraph 2 refer to (指代)?
A. The sky. B. The cold air. C. The water. D. The cloud.
()2. The water falls to the earth when .
A. some water goes up into the sky
B. the water meets the cold air
C. water drops are collected in clouds
D. the cloud is heavy enough
()3. What does the underlined word "experiment" mean?
A. 实验 B. 游戏 C. 物品 D. 道具
()4. In which class can we have the experiment?
A. English. B. Chinese. C. History. D. Geography.
()5. What is the best title for the text?
A. Water in the Sky B. Water Cycle
C. A Water Experiment D. Water on the Earth
B

1.C 2.D 3.A 4.D 5.B