Exercise is the best way to stay healthy. But few people get enough exercise. Only

    Exercise is the best way to stay healthy. But few people get enough exercise. Only 20% of Americans get 150 minutes of physical activity every week. More than 80 million Americans over 6 years old are not active (活跃的).

Many US schools cut (削减) PE classes. Only 15% of schools have this class at least three days a week.

This year, the US National Institutes of Health (NIH) starts an important study. It will show the things happening inside a body after exercise. The NIH hopes to tell people that exercise is a kind of good medicine.

The study will run for six years. It studies a group of about 3,000 people. They are from the 11-year-olds to the old. The study has shown many nice changes in the body during and after exercise so far.

And the study has also shown that housework can be physical exercise. “Cutting the grass, cleaning rooms, washing the car — all of these are exercise,” says a scientist. “Exercise isn’t just throwing a ball into a basket.”

165．What do the first and second paragraphs mainly tell us?

A．How to stay healthy in our daily life.

B．Children under 6 years old are not active in their life.

C．Many US schools don’t have enough PE classes.

D．Most Americans don’t get enough exercise.

166．Why does the US National Institutes of Health start the important study?

A．To tell people exercise is important.

B．To show people some useful exercise.

C．To call on students to do more exercise.

D．To ask people to start doing housework.

167．Which is TRUE about the study?

A．It will run for half a year.

B．It only studies the middle school students.

C．It has shown the body changes during and after exercise.

D．There are three hundred people taking part in the study.

168．Which of the following is NOT mentioned (提及) in the passage?

A．Cutting the grass.

B．Doing some cleaning in the house.

C．Planting some trees in the garden.

D．Washing the car.

169．What’s the best title for the passage?

A．An important study on exercise.

B．Doing housework is helpful.

C．The school students and exercise.

D．A kind of medicine for the old and the young.

165．D

166．A

167．C

168．C

169．A

【分析】

本文主要介绍了运动的重要性。今年，美国国立卫生研究院（NIH）开始了一项重要研究。它会显示运动后身体内部所发生的事情。NIH希望告诉人们运动是一种好药。

165．主旨大意题。由句子Only 20% of Americans get 150 minutes of physical activity every week. More than 80 million Americans over 6 years old are not active (活跃的).Many US schools cut (削减) PE classes. Only 15% of schools have this class at least three days a week.可知，大多数美国人运动不足。故选D。

166．细节理解题。题干：美国国立卫生研究院为什么要开始这项重要研究？由句子The NIH hopes to tell people that exercise is a kind of good medicine. NIH希望告诉人们运动是一种好药。也就是告诉人们运动很重要。故选A。

167．细节理解题。题干：关于研究，哪个是正确的？由句子The study will run for six years. 这项研究将持续六年。可知A不正确；由句子It studies a group of about 3,000 people.可知，它研究对象是面向3000人，而不是只有学生，故B/D不正确；根据句子The study has shown many nice changes in the body during and after exercise so far. 研究显示，到目前为止，在运动中和运动后，身体发生了许多有益的变化。可知，C正确。

168．细节理解题。由句子“Cutting the grass, cleaning rooms, washing the car — all of these are exercise,”可知，Planting some trees in the garden.没有提到。故选C。

169．推理判断题。本文主要介绍了运动的重要性。今年，美国国立卫生研究院（NIH）开始了一项重要研究。它会显示运动后身体内部所发生的事情。NIH希望告诉人们运动是一种好药。

所以最好的题目是：一项关于运动的重要研究。故选A。