题目内容：

A bicycle may be seen by most people as just another vehicle (交通工具), but for many Londoners, cycling is a way of life. According to an official UK government survey in 2017, about 570,000 bike journeys are made every day in London. In fact, almost half of the vehicles that pass over London Bridge each day are bikes.

London introduced a public bike-sharing system in 2010. “There can be no doubt that our trusty bicycles have changed the way people get around our great city,” Johnson told the Guardian in 2015.

In London, bikes are used for more than just taking short trips to and from the subway. No matter where you want to go in the city, taking a bike is usually the quickest and easiest choice.

And it’s not just shared bikes that the government is encouraging people to ride. In many companies across the UK, the UK government’s Cycle to Work scheme (骑行倡议) allows employees to buy a brand new bike without having to pay any tax (税). This means that it’s common to see many people cycling to and from work, and some employers even provide workplace showers and lockers (储物柜) for their workers. More importantly, a cycle-friendly boss may let you off for being late if you rode a bike to work.

Not only is it great for the environment and our body, cycling is also good for the mind. According to National Geographic Magazine, “Bike riding can improve people’s happiness.”

1.How does the author show the popularity of cycling in London?

A. By making comparisons.    B. By giving examples.

C. By using numbers.    D. By using famous sayings.

2.What’s Johnson’s attitude toward the bike-sharing system in London?

A. Supportive.    B. Doubtful.

C. Disappointed.    D. Uninterested.

3.What can employees get from the government under the “Cycle to Work” scheme?

A. Free bike-sharing services.    B. A tax-free bike.

C. Shorter working hours.    D. Workplace showers and lockers.

4.What’s the article mainly about?

A. Cycling as a healthy way of life.

B. London’s public bike-sharing system.

C. Why Londoners are encouraged to ride bikes.

D. How cycling has become popular in London.