Question

【题目】It’s cold and dark outside, and your bed is so warm and comfortable. Going for a run seems like such a bad idea. But before you hide your running shoes, it might be worth giving that crazy idea a go.

According to The Huffington Post, an outdoor run in winter, as opposed to one on a treadmill(跑步机), burns more calories because the body is working hard to adjust its core temperature. Furthermore, research shows that race times are faster in cold weather than in warmer temperatures and quicker runs burn more calories. Similarly, cold weather also makes the heart work harder to distribute blood through the body, making that vital muscle even stronger.

Outdoor exercise also turns up your energy and rids you of the stress and depression that build up every day. The heat and humidity in the summer can drag you down and tire you faster, but cold weather is refreshing. It adjusts you to your surroundings, making you feel alive.

Of course, the threat of smog in some built-up areas is a further hurdle to winter exercise. Heart attacks, stroke, lung cancer and asthma are all dangers of running in smog. The combination of air pollution and exercise increases the potential problems. If you do choose to run outside on smoggy days, take a path in a park or residential area to avoid car exhaust(尾气), and go early in the morning before rush hour. But staying inside on smoggy days and waiting for the next clear day to run is best.

【1】How does cold weather benefit runners, compared with warm weather?

A. They can run more slowly.

B. They can take in more calories.

C. Their hearts can function harder.

D. Their body temperature can get lower.

【2】How does summer affect runners?

A. It builds up their energy quickly.

B. It makes runners tired easily.

C. It lessens runners’ stress.

D. It causes heart attack.

【3】What are the runners supposed to do on smoggy days?

A. Stop driving cars.

B. Do more exercise.

C. Avoid outdoor exercise.

D. Run late in the morning.

Answer 1

【答案】

【1】C

【2】B

【3】C

【解析】本文介绍了冬天户外跑步给人带来的好处，并且建议雾天最好呆在室内，等天晴再去跑步。

【1】C。细节理解题。由第二段最后一句cold weather also makes the heart work harder to distribute blood through the body, making that vital muscle even stronger得知冬天户外运动会让你的心脏更努力地将血液送往全身，从而使得肌肉更加强壮。故，选C。

【2】B。细节理解题。从第三段第二句The heat and humidity in the summer can drag you down and tire you faster, but cold weather is refreshing.得知，夏天的炎热和潮湿会降低速度让你更快劳累，但是寒冷的天气却让人耳目一新。

【3】C。细节理解题。请在此填写小题的解析!