题目内容：

Right in front of the Minneapolis Central Library, a row of green bikes sits parked in a special stand. Each bike is designed with the logo “ Nice Ride”-- the name of the city’s bike-share program.

Nice Ride bikes are a lot like the library books that people come here to borrow. To rent a bike, you simply use your membership card at a Nice Ride bike station. Members can rent one of l, 200 bikes from 138 stations throughout Minnesota’s largest city. People use the Nice Ride bikes to go to work, to go out on business , or just to enjoy the city’s many bike paths.

The rise of bike-share programs like Nice Ride is encouraging more people than ever to choose biking over driving. Skyrocketing gas prices and concerns about the environment have also gotten people to dust off their bike helmets, pump air into flat tires, and hit the road.

Why ride? Not only is biking good exercise but switching from a car to a bike also cuts down the  amount  of pollution  in  the  air. Carbon dioxide, a greenhouse  gas linked to climate change, is one of the many polluting substances that come out of a car’s tail pipe.

Bike-share systems are found around the world in cities like London, Paris, Barcelona, and Melbourne, Australia. The largest program with 70,000 bikes--is in Wuhan, China.

To make roads friendlier to non-motorists, the U. S. Department of Transportation has invested more than a billion dollars in cycling and pedestrian projects in recent years. The money went toward building thousands of miles of on-street bike lanes and pedestrian-only passages called greenways.

1.Which of the following can people do with the bikes?

A. Earn a living.    B. Enjoy bikeways.

C. Compete in a race.    D. Rent them out to others.

2.What is Paragraph four mainly about?

A. Benefits of biking.    B. Pollution caused by cars.

C. Methods to use the bikes.    D. Measures to decrease pollution.

3.Which of the following is true of Nice Ride?

A. China has better public bike systems.

B. It will take the place of taxi companies.

C. It attracts more people to choose biking.

D. The government lacks money to support it.

4.What is the author’s purpose in writing this text?

A. To seek advice for Nice Ride.

B. To compare Nice Ride with libraries.

C. To raise money for bike-share programs.

D. To introduce the bike system in public places.