play basketball and other ball sports should stretch in advance. Those who haven't stretched since childhood gym class might want to consider consulting an athletic trainer about the best upper and lower body stretches, particularly for the shoulders and hamstrings.

【文章大意】本文是一篇说明文。运动前是否要进行拉伸？拉伸时间的长短需要注意吗？所有的运动都需要提前拉伸吗？阅读本文你将找到这些问题的答案。

9．Which of the following statements agrees with most fitness experts?

A．Before playing a game you should stretch your legs and arms.

B．After attending a match you should stretch your legs and arms.

C．It's harmful to stretch your legs and arms before playing games.

D．It doesn't matter whether you stretch or not before playing games.

解析：C细节理解题。根据关键句可知，大多数专家建议运动前不要进行拉伸运动，C项与专家建议相符。故选C项。

关键句：So most fitness experts currently advise against stretches before exercise.(第一段倒数第二句)

译文：因此，大多数健身专家建议锻炼前不要进行拉伸运动。

10．According to the new research, people may suffer negative impacts when ________.

A．they do stretches after attending a game

B．they reach for toes and hold that position

C．following a stretch with several minutes' jogging

D．dashing immediately after one 60-second plus stretch

解析：D推理判断题。根据第三段第一句“Th ose undesirable effects were generally found, however, only if each stretch was held for more than 60 seconds and the subject then immediately became fully active, with no further warm­up.”可知，身体拉伸超过1分钟，没有进一步的热身运动而立即运动的话，那些不良影响就会出现。由此可推断D项“拉伸超过1分钟后立刻猛跑”是不好的。故选D项。

11．We can learn from the passage that ________.

A．all athletes should not stretch in advance

B．the four scientists published the journal APNM

C．it's unnecessary for a tennis player to do warm-up stretches

D．players ought to have done warm-up stretches since childhood

解析：A细节理解题。根据关键句并结合下文Dr. McHugh所举的例子可知，并不是所有的运动员都应该提前做拉伸运动。故选A项。

关键句：Do these findings mean that all the athletes should stretch in advance before a match? “Not necessarily，” Dr. McHugh says.(最后一段第一、二句)

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