一、根据中文意思完成句子。
1. 所有的生物都需要食物和水。
need food and water.
2. 孩子们在水上乐园玩水玩得很开心。
All the children in the water park.
3. 在寒冷的天气，水可以变成冰。
In cold weather, water can .
4. 人们每天都需要喝很多的水。
People need to every day.
5. 在中国南方有很多河流。那儿的人们可以乘船出行。
There are many rivers in the south of China. People there can .

一、1. All living things 2. have fun with water
3. turn into ice 4. drink much water
5. travel by water/ship/boat

二、根据短文完成思维导图。
We must save water. Water is important to people, animals and plants on the earth. With no water, we cannot live. There are some ways we can help to save water. Indoors, we can turn off 关掉 the tap 水龙头 while brushing our teeth. We can share bathwater 洗澡水 with our family. We can take a quick shower. When every family does something, we can save a lot of water together. Outdoors, we can get the rainwater and water the plants with it. We can let more people know about the importance of water as well. Saving water is saving our future 未来. Each of us should join in these activities and help build 建造 a more beautiful world.

二、1. save 2. brushing 3. share
4. shower 5. plants

三、阅读理解。
There are deserts all over the world. Most deserts are very hot and dry. But some parts of a desert can become very colorful after it rains. Many plants blossom 开花 only when it rains. If there is water, the desert can be home to many living things.
Scientists 科学家 are trying to turn the deserts into good land again. They want to bring water to the deserts. In this way, people can live and grow food. They are learning a lot about the deserts now. But more and more 越来越多 places on the earth are turning into deserts. It is hard for scientists to change the deserts in time 及时. Scientists think that people make too many deserts. People are doing bad things to the earth. They get too many things from the earth, but they never give things back 归还 to the earth.
Some places on the earth don't get much rain. But they are not deserts. This is because some green plants are growing there. Small green plants are very important to dry places. Plants stop the sun from making the earth dry. When the rain falls, the plants keep the water. If there are no plants, the land will become deserts. How useful the plants are!
根据材料内容选择最佳选项。
()1. What is the weather like in most deserts?
A. Hot and dry. B. Warm and wet.
C. Cool and dry. D. Cold and wet.
()2. When do many plants blossom in deserts?
A. When it's warm.
B. When it's sunny.
C. When it's rainy.
D. When it's hot.
()3. What does the underlined phrase "change the deserts" mean?
A. To make the deserts brown.
B. To make the deserts green.
C. To make the deserts blue.
D. To make the deserts yellow.
()4. Why do scientists think people make too many deserts?
a. People are doing bad things to the earth.
b. People get too many things from the earth.
c. People never give things back to the earth.
d. People grow food in the deserts.
A. a b c B. b c d
C. a c d D. a b d
()5. What can we know from Paragraph 3?
A. The deserts need a lot of rain.
B. The land can't become deserts if there is much water.
C. The plants are important to the earth.
D. People can grow food in the deserts.

三、1. A 由第一段第二句可知，大多数沙
漠是非常炎热、干燥的。
2. C 由第一段第四句可知，下雨的时
候花才开放。
3. B 由第二段第一句可知，科学家们
一直在努力把沙漠变成良田，所
以应该是让沙漠再次变成绿色。
4. A 由第二段倒数第一、第二句可
知，人们破坏地球；只知道索
取，不知道回报。
5. C 第三段主要讲述了植物对地球的
重要性。