孙继艳

一项研究数据显示，全球有 14 亿成年人缺乏运动，成为心脏病、癌症等疾病的多发群体。本文用具体的数字说明了一周之内人们应做多长时间的运动才能保持健康。

People across the world need to get moving， according to a new study by the World Health Organization （WHO）.

5 percent of adults do not get enough exercise， according to the study. This number hasn’t changed from 2001. Because of this， about 1.4 billion people are close to deadly diseases such as heart disease and cancer.

People should do at least 150 minutes of “moderate intensity （中等强度）” exercise each week， such as dancing or swimming. They can also do 75 minutes of “vigorous intensity （高強度）” activity， such as running or playing soccer， according to the WHO.

As for how to exercise more， experts suggest we don’t have to go to the gym every time. For example， we can go up and down stairs a lot instead of taking the lift. If we don’t feel we can go to a dancing class each week， standing on one leg for 30 minutes a day is very good， too.

The study also found that women are less active than men， with 32 percent of women failing to exercise enough， compared to 23 percent of men. Women spend more time at home taking care of children and doing housework.

But unlike that in most other countries， men are less active than women in China， with 16.6 percent of men and 12 percent of women not getting enough exercise.

1. The underlined word “this” in the second paragraph refers to .

A. No enough exercise. B. Hard work.

C. Sleeping too much. D. Get too much exercise.

2. How long should people do moderate intensity exercise each week at least？

A. About 100 minutes. B. About 150 minutes.

C. About 200 minutes. D. About 500 minutes.

Keys：AB