题目内容：

A: Alex, do you like to drive?

B: Sure. But I don't like to sit in traffic!

A: When I'm tired, I avoid driving.

B: I know. 1. I don't drive when the weather is bad.

A: So a self-driving car, would be really great.

B: A what?

A: A self-driving car. You can go to places at the push of a button (按钮).

B:2.

A: Sure. Choose a place you want to go to and program the car. Then you push a button. And the car takes you there.

B: You don't have to do anything?

A: No.3.

B: What a great invention! Just think. Blind people could use self-driving cars.

4.

A: Right. Now many old people give up their cars because they're no longer safe drivers.

B:5.

A: Yes.

A.It's not safe.

B.Would you like one?

C.You just enjoy the ride!

D.And old people could use them, too.

E.Could you please tell me how it works?

F.So self-driving cars are very convenient for them.