A、A taxi driver. B、A bus driver. C、A college student. D、A dustman. A根据对话中“My car is stalled on the freeway，I have a lady passeng

Operator: Hello. This is the emergency 911 operator.
Taxi Driver: Help. Help. Please help me!
Operator: Yes sir. Please calm down and explain exactly what is happening.
Taxi Driver: Calm down! My car is stalled on the freeway, I have a lady passenger, and she’s going into labor.
Operator: Now relax, sir. Explain exactly where you are.
Taxi Driver: I’m...in the southbound lane of the Lincoln Expressway, about 15 miles from the Washington Tunnel, and this lady isn’t going to wait.
Operator: Okay. What’s you name, sir, and your passenger’s?
Taxi Driver: It’s...it’s Bob, and I have no idea about the woman. She’s in no condition to tell me.
Operator: Okay, now what’s the nearest landmark to your location? Pay careful attention.
Taxi Driver: Umm, I see golden arches... McDonalds.
Operator: Okay, is there anyone else with you?
Taxi Driver: No, and I’ve tried to get someone else to stop. (The sound of a bottle breaking.)
Operator: Hey, what was that? (Ahhhh!)
Taxi Driver:  Ah, someone threw a bottle at me. How soon can someone get here?
Operator:  I’ve just dispatched an ambulance to your location. They should be there any second.
Taxi Driver:  Hey, is there anything I can do while we are waiting for the ambulance?
Operator:  Yes, uh, keep her calm and warm.
Taxi Driver:  Okay. Please hurry. Oh, they’re too late. It’s a boy!
What is the man who is calling?