题目内容：

    These days the subject of security(安全) on campus is talked about quite often. Some students' mobile phones are stolen, some students fight with and hurt one another, and others are knocked down by the fast running motorbikes or cars.

These problems are common on campus. I think there are three causes for these. Firstly, some students don’t take care of their own things. They are still young and not careful enough. Secondly, some students want to do everything well. They want to be the winners in exams, and they also want to be the winners in fighting. And thirdly, the campus guards don’t carry on their duties well.

In order to have a safe campus, all the students should be very careful about their own things. They should also mind their behaviors and act politely. The campus guards are supposed to be devoted(致力于) to the safety on campus, and it is their duty to safeguard a safe campus to help provide a good environment for the students.

1.According to the passage, some students'are stolen.

A. books B. watches C. bikes D. mobile phones

2.There are ___ reasons for the campus problems.

A. 2 B. 3 C. 4 D. 5

3.The passage tells us some ______ don’t carry on their duties well.

A. Campus guards B. students C. teachers D. Headteachers

4.Which of the following sentences is NOT right?

A. Some students are knocked down by the cars.

B. Some students want to be winners in exams and fighting.

C. All the students take care of their own things.

D. All the students should take care of their own things.

5.This passage is mainly about .

A. how to act politely B. how to do well in exams

C. How to make the campus safe D. How to take care of things