阅读短文，根据要求完成下列各小题。

     The relationship between student and teacher is less formal (正式的) in the U.S. than in many other

countries, especially at the college level. (1)当老师走进教室时,学生不必起立. Students are generally

encouraged to ask questions during class, to go to the teacher's office for help after class, and to phone

if they can't go to school and need help with their lessons. (2)Most teachers allow students to enter class

late or leave early, if necessary.

     (3)However, students are still asked to be____________ to their teacher and classmates and to be

____________ during a test. When the teacher or a student is speaking to the class, it's rude to talk to

another classmate, even in a low voice. When a test is being given, talking to a classmate is not only rude

but also wrong. In the eyes of most American teachers, students who are talking to each other during a

test are cheating (作弊).

A. 英汉互译。

1. 将(1)句译成英文。

2. 将(2)句译成中文。

B. 根据短文内容，简要回答问题。

3. 在(3)句的空白处分别填入一个适当的词使句意完整、上下文通顺。

4. 在文中找出与下面句子意思相近的句子。

    Most teachers think it is dishonest of students to talk about something when they are having an exam. 

5. 在文中找出最能表达该短文主题的句子。