C
It's OK to run when it's cold outside. But is it OK to run when you have a cold? Many runners find the activity addictive. Running releases endorphins(内啡肽)into the brain, which are responsible for mood changes. The harder you run, the more endorphins released, and the happier you are. Some studies show this endorphin rush allows people to continue running even when injured or sick.
And that brings us to the point of this article—why people continue their running even when they're sick. Most of us curl up in bed with some chicken soup and the remote control when we're under the weather. But runners often hit the road. Are they helping or hurting themselves by jogging with a cold?
The best way to decide whether you should exercise is to employ what doctors call the "neck check". Feel free to go running if your cold is"above the neck". Doctors advise against proceeding with your exercise if your symptoms(症状)are "below the neck".
Some people think that running in cold temperatures will actually make them sick. But this isn't really true. You can't freeze your lungs or windpipe(气管). Your body heats the air you breathe. When the air is particularly cold, you may feel a burning sensation in your chest as you breathe. If that's the case, try covering your mouth with a scarf or wearing a ski mask. That'll help heat up the air before you breathe it in.
Keep in mind, if you have an infection(感染)in your chest or throat, running outside can indeed make things worse. But if you have a simple head cold, it would be fine to take that run, even if it's cold outside.
8. Why do some people still go running even if they are not in good condition? （）
A. They'd like to keep their figures.
B. They don't realize the harm it does.
C. They want to feel the pleasure it brings.
D. They enjoy the atmosphere of running with others.
9. What does the underlined word "proceeding" in Paragraph 3 mean? （）
A. Stopping.
B. Working.
C. Changing.
D. Continuing.
10. What is the misunderstanding of running in cold weather? （）
A. It will make people ill.
B. It will worsen people's health.
C. It will burn your chest.
D. It has nothing to do with people's illness.
11. What can we learn from the text? （）
A. Running when suffering a cold can be harmful.
B. Running in cold weather makes people happier.
C. Lying in bed is what we all do when catching a cold.
D. Covering your mouth when running in cold weather frees you from a cold.
D

8. C 细节理解题。根据第一段中的“The harder you run, the more endorphins released, and the happier you are. Some studies show this endorphin rush allows people to continue running even when injured or sick.”可知，跑步释放的内啡肽会让人感到快乐。由此可知，人们在受伤或者生病时依然坚持跑步是想体验跑步带来的快乐。故选C。
9. D 词义猜测题。根据画线词前的“Feel free to go running if your cold is‘above the neck’.”以及后文“if your symptoms(症状)are‘below the neck’”可知，此处指如果感冒的症状“在脖子以上”，则可以继续去跑步，但如果感冒所带来的症状“在脖子以下”，那么就应该暂停跑步。故此处应该表示医生建议“不要继续运动”。画线词与D项的意思相近。故选D。
10. A 细节理解题。根据倒数第二段中的“Some people think that running in cold temperatures will actually make them sick. But this isn't really true.”可知，一些人误认为在寒冷环境下跑步会让人生病。故选A。
11. A 推理判断题。根据最后一段内容可知，在感冒的时候是否可以跑步要分情况，如果胸部或喉咙感染了，在户外跑步确实会让情况变得更糟，但如果只是轻微伤风，则可以在户外跑步。由此可知，感冒时跑步可能是有害的。故选A。