题目内容：

Parking lots again came up for discussion in Shanghai. Another 220, 000 private cars will hit the roads this year, and the need to buy a car is still very high among people. More than 270,000 cars have no designated(指定)parking areas at night. In a middle school in Changing District, trees were cut in a green area to make way for car parking. The school had not considered car parking when it was being built,

A private car is used about an hour daily for driving and stays parked for 23 hours. Many private cars are used even less. Car-sharing offers users all kinds of cars. The cars are parked in car-sharing stations, lying throughout the city. Customers of car-sharing can book(预定)a car at any time ( day or night) by telephone or on the Internet. The customer then picks the booked car up at the set time. After finishing his/her business, they return the car to the same place where they picked it up. Maybe, this is one way to solve the car parking problem.

On the other hand, the idea of Park & Ride has been suggested. This means that underground train and city train should be developed quickly. You can leave your cars in car parks nearby subway and bus stations and then you can ride public transports to go to the city centre within minutes—great in wet weather or when you're carrying heavy bags. Park & Ride services can save you a little more time to do something you enjoy: catch up on e-mails, chat with friends, read the paper or simply relax, and prepare for the day ahead. Then the city will cut down the number of parking lots in the city centre.

1.Why does the writer mention what the middle school did in Paragraph 1?

A. To say car parking has been a problem for along time.

B. To show the car parking problem is becoming more serious.

C. To warm the middle school didn't care about environment.

D. To tell people to learn from the school for more parking areas.

2.How does the writer like the car-sharing service?

A. Expensive.    B. OK.

C. Not possible.    D. Not convenient.

3.According to the text, private cars         .

A. are not useful at all

B. are not used very often

C. are responsible for the city train development

D. help drivers reach the city centre more quickly

4.According to the idea of Park & Ride, we can infer(推断)the city will have to         .

A. build more parking lots near subway and bus stops

B. offer more cars to the customers in the city centre

C. encourage people not to drive cars to the city

D. ask people not to buy more cars