【推荐2】听下面一段独白，回答以下小题。
1. How many cities and towns does the subway system serve in San Francisco?

A．Four.

B．Five.

C．Twelve.

2. What is the average speed of the trains?

A．35 miles per hour.

B．45 miles per hour.

C．80 miles per hour.

3. What can we learn about the subway system?

A．Most of the stations are underground.

B．Trains always come every 5-10 minutes.

C．The cost of a ticket depends on the distance.

【推荐3】听下面一段较长对话, 回答以下小题。
1. What was the man doing when he saw the accident?

A．On his way to the museum.

B．On his way to the library.

C．On his way home.

2. What was the truck driver doing before the accident?

A．Driving from the opposite direction.

B．Parking by the side of the street.

C．Making a phone call in the truck.

3. Who called the ambulance?

A．The woman.

B．The man.

C．A man nearby.

4. What’s the woman’s suggestion to the man?

A．Be careful when walking.

B．Try to forget the experience.

C．Don’t ride a car.