从课本中找到对应的英文词组，完成练习
1. 一些美妙的夜景
2. 新鲜空气
3. 在非常寒冷的水域里

一、根据句意，用括号中所给单词的正确形式填空
1. The sandy land in this area is not suitable for (farm).
2. Tigers catch small animals for food. They (most) live on meat.
3. In fact, tunas (金枪鱼) must swim to (breath).
4. —Dr Ma, are there any living things on other (planet)?
—Sorry, I don' know. Living conditions there are different from ours.
5. Trees can keep soil (土壤) in place, so planting as many trees as possible is a good way to stop (flood).

二、根据要求改写句子
1. People use water from rivers for farming and washing. (对画线部分提问)
do people water from rivers ?
2. Someone can live in such difficult conditions. (改为一般疑问句)
live in such difficult conditions?
3. As you know, most of a desert is made of sand. (改为同义句)
As you know, a desert is sand.
4. The earth's landscapes are wonderful. (改为同义句)
The earth has .
5. There is nothing interesting in today's newspaper. (改为同义句)
There interesting in today's newspaper.

三、根据中文意思完成句子
1. 寒假的最后一天，我无事可做只能在家看电视。
On the last day of my winter holiday, I had .
2. 我五分之三的同班同学都是男孩。

3. 长江是许多鱼类和动物的家园，比如白鳍豚、江豚等。
The Yangtze River , such as the Baiji (Yangtze River dolphin), the finless porpoise and so on.
4. 人类没有水就存活不了多久，因此节约水资源很重要。
, so it's very important to save water resources.