People have cut down many trees every year, so there will be fewer trees, ________?

Trees are useful to man in three important ways: they give him wood and other useful things, they give him cool places, and they help to stop drought and flood.

Unluckily, in many parts of the world, man has not found that the third of these points is the most important. Man wants to make money from trees, so he has cut them down in large numbers, only to find that without them he has lost the best friends he had. And also, he is usually too careless to plant and look after new trees. So the forests slowly disappear.

This does not only mean that man will have fewer trees. The results are even worse: for where there are trees, their roots break up soil-make the rain in-and also bind the soil, thus stopping it from being washed away easily; but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying away the rich top-soil. When all the top-soil is gone, nothing is left but useless desert.

1.The most important points of trees to man is ________.

A. they help him to make money

B. they give him cool

C. they give him wood and other things

D. they help him to stop drought and floods

2.In many places forests slowly disappear because ________ .

A. many trees have been cut down by man

B. new trees are not well looked after

C. man has not paid enough attention to planting trees

D. all the above

3.Land becomes desert after all trees are cut down because ________ .

A. roots of trees break up the soil

B. there are too many rainfalls

C. strong winds bring a lot of sand

D. there are no longer trees to keep the rain and protect the top-soil.

4. Which title best fits the passage?

A. Trees and Man.

B. The Function of Tree Wood.

C. How do People do with Trees?

D. The Usage of Tree Roots.

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?

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?

A．They are talking about space travel.

B．They are predicting the future.

C．They are talking about pollution..

D．They are predicting the weather in the future.

2.How many things does Roy Burns predict?

A．Two              B．Three            C．Five              D．Six

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

A．People will live much longer.

B．People will have to live on the moon.

C．Everybody will drive a green car.

D．There will be more buildings and fewer trees.

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

A．太空站           B．宇宙             C．星球             D．南极

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

A．The earth will be too crowded for human beings to live on.

B．There will be too much pollution everywhere.

C．There will be too many people.

D．The earth will be too hot to live on.