根據(jù)短文內(nèi)容，從短文后的七個選項中選出能填放空白處的最佳選項。選項中有兩項為多余選項。

Physical activity is known to reduce the risk of some diseases such as heart disease, stroke and diabetes. It is also known to increase the release of endorphins(安多芬) which reduce feelings of pain and help people feel more happy and peaceful.

__1.__ Some experts believe it is the act of exercising itself. Others say it is the feeling one gets from having met an exercise goal. Either way, the two things work together when it comes to improving one’s emotional health.

__2.__Aerobic exercise gets our heart rate going faster and increases our breathing. Activities like walking at an increased speed, dancing, swimming or riding a bicycle are good examples. Muscle- strengthening activities help build and strengthen muscle groups in the body.__ 3.__.

Experts said adults should get at least two and a half hours of aerobic exercise each week. More intense activities reduce the suggested amount of time to one hour and fifteen minutes. __4.__.

Earlier advice from the Centers for Disease Control said people need to exercise thirty minutes each day for at least five days to get the health benefits of exercise. More recent research suggested that those gains are the same whether you exercise for short periods over five days or longer sessions over two or three days.__ 5.__ A. They help people guarantee that they stay with the program.

A. There are two separate, but equally important kinds of physical activity.

B. This kind of exercise includes lifting weights, or doing sit-ups and push-ups.

C. Health experts have long noted the importance of physical activity.

D. There is some debate about exactly what causes the brain to release endorphins.

E. Experts say people should choose physical activities that they find fun.

F. Some examples are playing basketball, swimming and distance running.

G. Physical activity can help people reduce the risk of getting diabetes.

 

【答案】

1.D

2.A

3.B

4.F

5.E

【解析】

試題分析：文章大意：鍛煉不但能夠幫助人們減少疾病，而且會認人更加的快樂。

1.D 根據(jù)There is some debate about exactly what causes the brain to release endorphins中的debate可知和后文的some…， others …相吻合。故D項符合上下文。

2.A 根據(jù)后文的Aerobic exercise和Muscle-strengthening activities可知是兩種獨立作用的運動。

3.B 根據(jù)前文的Muscle- strengthening activities help build and strengthen muscle groups in the body可知選擇B。

4.F 考查上下文的語境理解能力。后文是對前文的具體表現(xiàn)。故F正確。

5.E根據(jù)句意可知，人們應該選擇他們找到樂趣的運動，它們幫助人們確保能堅持下去。

考點：考查說明文閱讀

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