Question 9 is based on the passage you have just heard.

Passage One

听力原文

    Related to the “use it or lose it” law is the “keep moving” principle. We learned about stagnation from nature. A river that stops moving gets smelly. The same thing happens to people who stop moving, either mentally or physically. (9) Those who play contact sports know that the player who usually gets hurt the most is the one who is standing still. Of course, you’ll need some time to catch your breath every so often, but the essential message is keep moving, extending and learning. Ships last a lot longer when they go to sea than when they stay in the harbor. The same is true for airplanes. You don’t preserve an airplane by keeping it on the ground. You preserve it by keeping it in service. We also get to live a long healthy life by staying in service. (10) Longevity statistics reveal that the average person doesn’t last very long after retirement. The more we’ll hear is “don’t retire”. If a fellow says “I’m 94 years old and I worked all my life”, we need to realize, that is how he got to be 94, by staying involved. George Bernard Shaw won a Nobel Prize when he was nearly 70. Benjamin Franklin produced some of his best writings at the age of 84, and Pablo Picasso put brush to canvas right through his eighties. Isn’t the issue how old we think we are? (11) A bonus with the “keep moving” principle is that while we keep moving, we don’t have a chance to worry. Hence, we avoid the dreaded paralysis by analysis.

9. What does the speaker say about players of contact sports?

解析：C。录音中指出，受伤最严重的运动员通常是那些站着不动的运动员，故C项正确。反之可以推出，通过不断移动则可以避免受伤，A项表述与此相反，故排除。这些运动员从事的是需要身体接触的体育项目，因此D项“需要学习如何避免身体接触”错误，故排除。B项在原文中没有提到，故排除。