二、阅读还原
Trees are useful to man in three very important ways:
The first important way is that they provide man with food, wood and other things. Trees provide not only man with food, but also many animals with food.1.  It's not easy for man to live on the earth, either.
The second important way is that trees give us shade. 2. You can know how important the shade of a tree is to man and to animals.
The third important way is that trees help to prevent drought and floods. However, in many parts of the world, many people don't know the third important way. 3. So they cut down a large number of trees. And they don't plant or look after new trees. At last they will find they lose trees. 4. Because if there are no trees, the rain falls on hard ground and flows away, causing floods.
5. If you don't do so, you will find you have lost the best friends in the end.
根据短文内容，从下列选项中选出能填入空白处的最佳选项，选项中有两项多余。
A. Man wants to make money from trees.
B. Now you know the importance of protecting trees.
C. Without trees, many animals could not live on the earth.
D. The results are even worse.
E. On a hot summer day, people are looking forward to having a rest under the shade of a tree.
F. Trees are beautiful and can make our environment more pleasant.
G. Some people like to plant trees in their gardens.

三、短文填空
阅读下面的短文，在空白处填入一个适当的单词或括号内单词的正确形式。
In the sea there are many islands. In the warm waters there are some little ones. We call them coral islands. 1. coral island looks very nice. It looks 2. a ring of land with trees, grass, and flowers on it. One part 3. the ring is open to the water.
If you look into this lake, you will see beautiful coral. You may think they are flowers. If you look at a piece of coral, you will see many little holes in it. A very small sea animal 4. (live) in each of these holes. These sea animals make coral.
They began to build under the water. Year after year, the coral grew 5. (high) and higher. At last it grew out of the water. Then the sea brought 6. (something) else to small trees and these things 7. (change). After some years, Sometimes the wind brought seeds into earth. Sometimes birds flew over it and brought seeds to the island. The little seeds grew. In a few years there were 8. (plant) all over the island. In a few years there were trees 9. (grow) there.
So you see these islands were built little by little. The workers were very small. Don't they teach 10. (we) a lesson? Can you think what the lesson is?