一、用括号中所给词的适当形式填空。
1. The radio programme has many (listen) because it's very interesting.
2. There are many different kinds of (live) things in the forest.
3. (sad), the little dog died yesterday. Its owner was very sad.
4. I have a lot of homework this week. If I finish it on time, I (watch) a movie on Sunday.
5. We should plant more trees. They can make a (clean) world for children in the future.

1. listeners 2. living 3. Sadly 4. will watch 5. cleaner

1. The boy saved ____ 50 yuan from his pocket money to buy a gift for his mother's birthday.
A.above
B.against
C.around
D.across

C

2. During the Spring Festival, people watched the film Ne Zha 2.
A.million of
B.millions of
C.90 millions
D.90 millions of

B

3. Planting more trees plays an important role in ____ soil erosion(土壤侵蚀).
A.falling down
B.putting up
C.slowing down
D.taking up

C

4. If success is a gate, the road to this gate must ____ difficulties.
A.be made of
B.be made from
C.be made up of
D.be made in

C

5. — There are several restaurants on ____ side of the street. Which one would you like to go, Sarah?
— The one next to Xinhua Bookshop.

A.all
B.each
C.both
D.every

B

三、根据教材 P94~95 课文内容完成短文。
An ecosystem 1. i all the living and non-living things in an area. Ecosystems are different in size, from small ponds to large grasslands. Each has an important 2. r in keeping nature balanced.
The ocean is a very big ecosystem. It covers around 71% of the earth's 3. s and makes around 70% of its oxygen. It 4. h lots of salt water. Water goes up into the sky, falls as rain onto the land, and then 5. r to the ocean again and again.
Wetlands only cover about 6% of the 6. l area, but they are home to about 40% of the world's plants and animals. The plants in wetlands help get rid of dirty things and make the water clean. Wetlands can also 7. p floods. When it rains a lot, wetlands 8. s water. That's why they are like the earth's "kidneys".
Forests cover almost one-third of the land area. The plants there take in carbon dioxide and give out oxygen. They trap 9. h things and make the air clean. 10. T, people call forests the "lungs" of the earth.

1. includes 2. role 3. surface 4. holds 5. returns 6. land 7. prevent 8. store 9. harmful 10. Therefore