A: Hello! May I speak to David, please?

B: Hello! This is David speaking. Who's t____?

A: Simon speaking. What are you going to do tomorrow?

B: I have no i____. Do you have any plans?

A: Yes. Shall we go to the zoo?

B: Good idea. We can see different kinds of animals there. A____ them, I like pandas best.

A: So do I. I can't wait to see them. B____ the way, can we feed the pandas?

B: No, I'm afraid not. It may h____them.

A: I see. Can you take your c____ with you? Mine is broken.

B: No problem. How can we get there?

A: The No.8 bus can take us there.

B: When shall we meet?

A: Let's m____ it half past eight in the morning.

B: All right. See you then at the school gate.

A: See you.

有人提出“以后我们将是地球村的村民”，你认为这一观点提出的理由在于(      )

①信息拉近了彼此的距离

②以后地球上只有一个村庄，不再有什么国家、城市

③人们在世界范围内的交往将更方便和频繁

④随着科技的发展，地球上国家与国家的地理距离将大大缩短

下图为北京市城市轻轨某路线图，读图完成下列问题。

a－b－c=____－(____＋____)