《2025年优佳学案（云南）八年级英语上册人教版》

根据句意,用括号中所给词的适当形式填空
1. Tom is very strong and weighs 90 kilos. (weigh)
2. In the beautiful garden, the old lady planted many roses. (rose)
3. African elephants are the biggest animals onland, right? (land)
4. Our teachers always tell us that knowledge (知识) will give uswings to fly high. (wing)
5. Some animals like snakes andfrogs sleep through the cold winter. (frog)
6. These are very tall trees. They have yellow leaves. (leaf)
7. It was the first time I travelled in an African country. (Africa)
8. Autumn is the most colourful season among the four seasons. (colourful)
9. Some colourful butterflies are flying around the flowers in the garden. (butterfly)

答案： 1. weighs
2. roses
3. land
4. wings
5. frogs
6. leaves
7. African
8. most colourful
9. butterflies

Trees are everywhere around us. They help us and our environment in many ways. Let's take a look.
● They help us breathe.
1. F A leafy tree produces as much oxygen in a season as ten people take in a year.
● They keep the earth cool.
Trees can beat the heat by taking in carbon dioxide that causes global warming.
● 2. A
Tree roots help to absorb (吸收) water during floods (洪水). They can slow the water flow.
● They store water.
Forests are like sponges (海绵), catching rainfall. 3. D Water can be stored there.
● They keep dirt in its place.
A forest's roots can hold soil together. In this way, the soil cannot be moved by wind or water.
● They clean up dirty air.
There are many pollutants (污染物) in the air. 4. G
● They give us medicines (药物).
5. E For example, ginkgo leaves are good for our lungs.
● They help us relax and explore.
Spending time in forests can help us calm down, as well as make us more creative.
A. They fight floods.
B. Trees help clean the sky.
C. They control noise pollution.
D. Then, water goes down into soil.
E. Forests provide a wealth of natural medicines.
F. Trees make oxygen and take in carbon dioxide.
G. Trees can store harmful pollutants or change the pollutants into less harmful forms.

答案： 1. F
2. A
3. D
4. G
5. E