情景选择。

1. 当你询问别人的姓名时，你应说：[ ]

A. My name is Jenny.

B. Hello! What's your name?

C. I'm Jenny.

2. 当你想要别人一本书时，你应说：[ ]

A. May I have one book?

B. No books for me.

C. How many books do you have?

3. 当你与Jenny道别时，你应说：[ ]

A. Good morning, Jenny.

B. Good-bye.

C. Hello!

4. 当你想知道李明在哪儿时，你会问：[ ]

A. How is Li Ming?

B. Where is Li Ming?

C. What is Li Ming?

5. 当有人对你说“How are you?”时，你应回答：[ ]

A. Good.

B. Fine.

C. Chair.

在网络通信中，计算机与服务器、服务器与服务器之间都是通过______信号进行信息传递的，固定电话和电话交换机之间的信号是通过______信号进行信息传递的．