题目内容：

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

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

Jack: I agree with Mary. Things will be worse. The weather in the future will be much hotter. Humans(人类) won't be able to live on the earth. They will have to look for another planet to live on.

Linda: I think life in the future will be better. Most people in the world will use “green cars”, so there will be less pollution and people will live to be 200 years old. As for space travel, I would say, we will visit Mars in about fifty years.

1.They are talking about________.

A.pollution B.weather in the future

C.life in the future D.Mars in about fifty years

2.What does Mary think life will be like in the future?

A.There will be fewer trees. B.Everybody will have a car.

C.People will live longer. D.People will live on Mars.

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

A.沙漠 B.岛屿 C.星球 D.海底

4.Why does Jack think humans will have to look for another planet to live on?

A.Because there will be too many buildings. B.Because the earth will be too hot to live on.

C.Because there will be too many people. D.Because the earth will disappear(消失)．

5.How many things does Linda predict(预测)?

A.One. B.Two. C.Three. D.Four.