题目内容：

    I can remember being in middle school and high school and always wanting to be able to wear a hat while walking through the hallways or sitting in class. So far, I have always been fond of wearing different types of hats whenever I go out. I think the ban on hats has been around for as long as there have been schools, but I feel the reasoning behind the ban is pretty correct, especially with all of the violence that we lend to hear about going on with today's youth.

One of the main reasons why kids are not allowed to wear hats in school anymore is the fact that the hats could be hiding a weapon or drugs which would definitely not be a good thing for the other kids or teachers in the building. It seems that this issue has not been going on for very long in the school system, but it is definitely starting to pick up the pace as more and more kids react with violence towards their fellow students.

I am all for the ban of wearing hats in today's schools and feel that the safer that each and every child is, the better it will be for everyone in the long run. I think that we should also eventually look into installing metal detectors(探测器)in all of the schools as well because you really can't be very safe these days. It hurts to think about children causing such violence as we have all seen on TV over the past few years, but the threat is very real and should be taken seriously.

1.According to the first paragraph, we can know _______.

A.school should allow students to wear different types of hats.

B.students in middle school and high school are very happy.

C.the ban on hats had appeared before school existed.

D.forbidding students to wear hats in school is necessary.

2.Why are kids not allowed to wear hats in school anymore?

A.Because there are probably dangerous things in them.

B.Because teachers are not fond of wearing hats.

C.Because hats are likely to have an effect on kids' studies.

D.Because kids are always buying extremely expensive hats.

3.What can you infer according to the passage?

A.Kids' safety in school is more important than anything else.

B.Metal detectors should be installed as soon as possible.

C.It is a pity that kids always do great harm to their teachers.

D.The threat that appears on TV should be taken seriously.

4.The passage mainly tells us _______.

A.how kids are protected from danger in school.

B.why kids are not allowed to wear hats in school.

C.the ban on hats in middle school and high school.

D.different opinions on the ban of wearing hats in school.