What will the future be like? What do you think of it? Here are some answers from some students.
Roy Burns: I think life in the future will be better. Most people in the world will use “green cars” by 2020, so there will be less pollution and people will live to be 200 years old. As for space travel, I would say, we will travel to Mars(火星) and some other stars in about fifty years.
Helen Lester: If we don’t take good care of the earth now, our children and grandchildren will be born into a world with too much pollution. There will be fewer trees and more buildings, because there will be more people.
Kitty Smith: I agree with Helen Lester. Things will be worse. The weather in the future will be much hotter. Human beings will have to look for another planet to live on.
【小题1】What are the students doing?

根据短文大意选择单词并用其正确形式填入空白处,使补全后的短文意思通顺,语法正确,结构完整.（5分）
walk      way     without     prevent     easy
Trees are useful in three important    1  .The most important way is that they  provide man with food , wood and other products. Trees provide food not only for man, but also for animals.  2   trees, many animals could not live on the earth. It’s not    3  for man to live on the earth, either.
The second important way is that trees give us shade(树荫). On a hot summer day, people are eager to have a rest under the shade of a tree after   4  a long way. You can imagine how important the shade of a tree is to man and animals.
The third important way is that trees help to   5   droughts and flood. However, in many parts of the world, man hasn’t realized it. He has cut trees down in large numbers. In the end, he finds that he has lost the best friends he had.

Trees are useful to man in three very important ways. The first important way is that they provide man with food, wood and other products. Trees provide not only man with food, but also many animals with food. Without trees many animals could not live on the earth. It’s not easy for man to live on the earth, either.

The second important way is that trees give us shade. On a hot summer day, people are eager(渴望)to have a rest under the shade of a tree after they have walked a long way. You can imagine 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 foods. However, in many parts of the world, man has not realized the third important way. He has cut trees down in large numbers. In the end he finds that he has lost the best friends he had.

I was born（出生） in a small river. When I was young, the river was my home. I did not know my father or mother, but I had many, many brothers and sisters. I swam（游泳） and played with them.

At that time I did not look like my father or mother. I had no legs, but I had a long tail（尾巴）. So I looked like a fish.

Then my tail became shorter and shorter. And now I have four legs and a very short tail.

I know I’m going to have no tail at all soon. I’m going to be like my father and mother. Then I’m going to jump（跳）out of the water. I’m going to live on the land（陆地） and in the water too. I’m going to eat a lot of insects---a lot of bad insects（昆虫）.

What am I?

1.The rive was my home when I was born.

2.I had no father or mother, but I had many brothers and sisters.

3.I was a fish when I was young.

4.I’m going to look like my father and mother.

5.I am an insect.

What will the future be like? What do you think of it? Here are some answers from some students.

Roy Burns: I think life in the future will be better. Most people in the world will use “green cars” by 2020, so there will be less pollution and people will live to be 200 years old. As for space travel, I would say, we will travel to Mars(火星) and some other stars in about fifty years.

Helen Lester: If we don’t take good care of the earth now, our children and grandchildren will be born into a world with too much pollution. There will be fewer trees and more buildings, because there will be more people.

Kitty Smith: I agree with Helen Lester. Things will be worse. The weather in the future will be much hotter. Human beings will have to look for another planet to live on.

1.What are the students doing?

2.How many things does Roy Burns predict?

3.What does Helen Lester think life will be like in the future?

4.What does the underlined word “planet” mean in Chinese?

5.Why does Kitty Smith think human beings will have to live on another planet?