It is easy for many people to catch a cold in the springtime 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 are actually different cold viruses out there. You never know which one you will get, so there isn't a cure for each one.

When a virus attacks your body, your body works hard to get rid of it Blood rushes to your nose and causes a block in it. You feel terrible because you can't breathe well, but your body is actually eating the virus. Your temperature goes up and you get a fever, but the heat of your body is killing the virus. You also have a runny nose to stop the virus from getting into your cells. You may feel very uncomfortable, but actually your wonderful body is doing everything it can to kill the cold.

Different people do different things to deal with colds. In the United States and some other countries, for example, people might have chicken soup to help them get over the cold. Some people take hot baths. Other people take medicine to stop different symptoms(症状)of colds.

There is one interesting thing to note一some scientists say taking medicine when you have a cold is actually bad for you. The virus stays in you longer because your body doesn't have a way to fight it and kill it Bodies can do an amazing job on their own. There is a joke, however, on taking medicine when you have a cold. It goes like this:

It takes about one week to get over a cold if you don't take medicine, but it takes only seven days to get over a cold if you take medicine.

    My pen pal John is a school boy. He is from the USA and he is 13 years old. This is his room. Let's have a look. His computer is on the desk. And a telephone is on it, too. His books are everywhere. Some are on the shelf（书架）and some are on the ground. Look, what's that under the bed? Oh, it's one of his socks. Where's his schoolbag? It's near the bed. You can find a dictionary, a pencil box and a set of keys in it. Where is his hat? Can you find it?

    Last night, Dave met Tina. They {#blank#}1{#/blank#}about their last weekend. For Dave, the {#blank#}2{#/blank#} was very nice. On Saturday, he{#blank#}3{#/blank#}for the history test. On Sunday, he watched a (an) {#blank#}4{#/blank#} TV play. "It was great!" he said. {#blank#}5{#/blank#}Tina's weekend wasn't very good. She was really   tired because she had a {#blank#}6{#/blank#} weekend. She went shopping on Saturday morning and read a book {#blank#}7{#/blank#} music on Saturday afternoon. She visited {#blank#}8{#/blank#} grandmother on Saturday evening. On Sunday, she wrote {#blank#}9{#/blank#} new song for the school music festival. It was a little {#blank#}10{#/blank#}, so she asked her mother for help.

A little bear is called Herry. He doesn't like brushing1. Every day his mother2to him,

"Herry, it's time for you to brush your teeth and go to bed.""I know, Mom." says Herry unhappily. He goes to the3and turns on the tap(龙头). He keeps water running. His mother thinks he is brushing his teeth.

"Too many teeth! How can I brush all these teeth?" Herry feels sad. "Maybe I can do it tomorrow morning. It is too bad to brush teeth every day." He looks at his4teeth and thinks, "I don't want to brush my teeth today. I can brush them twice tomorrow. That will be OK."

But the next day, he doesn't brush his teeth. He always thinks he can do it tomorrow. One morning, when he gets up, he finds all of his teeth have gone5. He cries, "My teeth! My teeth! " His mother comes into his bedroom and says, "What's6?" "I don't have any teeth now, Mom! I7to brush my teeth every day. " He cries again and again. His mother takes him to see the8. The doctor says, "Oh, little bear! I am9to say you can't eat any food now. There aren't any teeth in your mouth."

The little bear cries and cries10. Suddenly he wakes up, "Oh, thank goodness! It is a dream. A terrible dream." He gets up at once and goes to brush his teeth. He tells himself to brush his teeth every day.