题目内容：

阅读下列短文，从各题所给的A、B、C、D四个选项中，选出最佳选项。

Mr. Green’s Special Speech for Students Topic: How we can help to protect the environment Time: 8:00—9:00 a.m. 17th， April Place: The school hall Matter needing attention: Be on time What to talk about   Our planet is in trouble! Almost every day we seem to hear about problems of the environment—pollution， climate change（气候变化）and the disappearing of the animals and the plants.   As we all know， these environmental problems are mostly caused by us humans. We must find ways to solve these problems， or the earth will no longer support human lives as always.   Each of us， whatever age we are， should do something to protect the earth. We’re all responsible for the environment. What can we do? Come and listen to Mr. Green’s speech tomorrow.

1.How long will the speech last?

A. 120 minutes.       B. 90 minutes.

C. 60 minutes.          D. 150 minutes.

2.The underlined word "disappearing" means "______" in Chinese.

A.灭绝        B.伤害        C.变异                  D.退化

3.Where can students listen to the speech?

A. In their classroom.             B. On the playground.

C. In the school library.          D. In the school hall.

4.Mr. Green will talk about ______ in his speech tomorrow.

A. how to protect students' eyes

B. how to find the animals and the plants

C. how to protect the environment 

D. how to plant trees

5.We can probably read this material from the ______.

A. music magazine          B. school newspaper

C. student report card     D. science textbook