根据短文内容，选择正确最佳答案。
American Classroom Rules
1. If the teacher asks a question, you should give an answer. If you do not understand the question, you should put up your hand and ask the teacher to repeat the question. If you don’t know the answer, it’s all right to tell the teacher that you don’t know. Then he or she knows what you need to learn.
2. There is no excuse for not doing your homework. If you can not go to school, you should call your teacher or your classmate and ask for the homework. It is your responsibility（责任）to find out what homework you have missed. It is not the teacher’s job to remind you of missed homework.
3. You must not be absent(缺席) on a test day. If you are badly ill, call and let the teacher know you will not be there for the test. If your teacher allows you to take a makeup, you should take the test within one or two days after you return to class. Bad illness is the only reason for missing a test.
4. Be on time! It’s not polite to be late. Also, it bothers other students. If you must come in late, be sure to do it quietly. Have your books out of your bag before you come into the classroom. Then go to your seat and sit quietly. In the US, it is not necessary to knock at the door before you come into the classroom.
小题1:If you can not go to school, __________.
A．the teacher will remind you of the homework
B．the teacher will call you to tell you what your homework is
C．you should find out what your homework is
D．you don’t have to do your homework小题2:If you are badly ill, _________.
A．you can’t be absent on a test day
B．you should take the test within one or two days
C．you should let your teacher know that you will be there for the test
D．you can miss the test小题3:In the US, __________ if you are late.
A．it’s all right to come into the classroom without knocking at the door
B．take your books out of your bag after you come into the classroom
C．it’s not necessary to keep quiet when you enter the classroom
D．it’s not polite to knock at the door小题4:The underlined word “make up” in the 3rd paragraph means _______.
A．化妆
B．编造
C．组成
D．补考小题5:The main idea of the passage is ________.
A．that you should answer the teacher’s questions in class
B．that you have the responsibility to do your homework
C．the rules you should follow as an American student
D．that it’s polite to be on time for class
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