四级练习2015.10.13
[audio]http://sound.yywz123.com/tingbbs/cet4/cet420151013.mp3[/audio]Many people catch a cold in the spring time or fall. It makes us wonder if scientists can send a man to the moon, why can’t they find a cure for the common cold? The answer is easy. There’re actually hundreds of kinds of cold viruses out there. (1)_________________________. When a virus attacks your body, your body works hard to get rid of it. Blood rushes to your nose and causes a blockade in it. You feel terrible because you can’t breathe well, but your body is actually eating the virus. Your temperature rises and you get a fever, but the heat of your body is killing the virus. You also have a running nose to stop the virus from getting to your cells. You may feel miserable, but actually your wonderful body is doing everything it can to kill the cold. (2)___________________. In the United States and some other countries, for example, people might eat chicken soup to feel better. Some people take hot bath and drink warm liquids. (3)_________________________. There was one interesting thing to note. Some scientists say taking medicines when you have a cold is actually bad for you. The virus stays in you longer, because your body doesn’t develop a way to fight it and kill it.
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