Some recent surveys show that the health conditions of many white collar employees and office workers are rather dangerous. Death cases among white collar employees and office workers are increasing year by year and these cases are generally believed to have been caused by overwork and spending little time taking rest or doing exercise.
If their offices are within the distance of half an hour's walk, some office workers now choose to go to work on foot. Ms. Deng, who works in a foreign enterprise in Beijing, has been walking to her office for more than six months now. “ I usually have a tight work schedule and can't find time to do exercise. So I choose to walk to work. ” As she said, if the office is not far from home, most women would like to go to work on foot. Walking is good for their health and can help them to keep good figures as well.
Apart from walking to office，one can also find time to do exercise when one is at work. The simplest way is to desert the lift. Mr. Wei, who works in the Passenger Service Department at Shenzhen Airlines, is one of such men who frequently climb stairs. “ I only use the lift whenever I'm with my colleagues or my boss. Otherwise, I would climb stairs instead of taking the lift. ”
In addition, some office workers try to find time to go to a gym at the end of a day. Ms. Sang works in a law firm in Shenzhen. She goes to the gym several times a week when she has the time. “ I go to the gym every weekend. During the weekdays，I will also go there whenever I have the time. ” Ms. Sang and her husband both have a gym membership card for a whole year. The cards cost them 3000 yuan. However, they think it's worth it.
Why are death cases among white collar employees and office workers increasing year by year?

A．Because they overwork for a long time.

B．Because they are too busy to have time for a rest.

C．Because they hardly have time to do exercise after work.

D．All of the above

How many ways that office workers use to keep healthy are mentioned in the passage?

A．3.

B．4.

C．5.

D．6.

If a white collar employee lives one kilometer away from her office , she had better __________ to keep healthy.

A．walk to her office

B．run and then take the stairs to her office

C．take a taxi to her office

D．ride a bike

Which of the following sentences can be added between Paragraph 1 and Paragraph 2?

A．Then, what shall office workers do next to prevent death cases?

B．What will happen to office workers?

C．In order to keep themselves healthy, some office workers now take measures as follows ：

D．Walking on foot is the best way for office workers.

The best title of the passage is __________.

A．Health Is Very Important

B．Office Workers Try to Keep Healthy

C．How to Keep Healthy

D．Office Workers' Trouble