There is a famous English saying “You are what you eat”, anditmeans what you put in your mouth will become part of you. Many experts (专家) use it to tell people it's important to have a good eating habit. For example, too much sweet food makes a person overweight（超重）. To avoid being fat, kids are told to keep off sweet food. But, a team of American scientists have found something new about eating sweet food.

“When we say some people ‘sweet’, we mean they are kind and friendly to us. Perhaps(也许) this word can help us learn more about people's feelings and acts.” said Brian Meier, a scientist from the study team. “Taste is something we experience every day. What we have done is to find whether we can know someone's character(角色) and behavior(行为) depending on their taste.”

In one of their experiments(实验),   students were asked questions about their character－whether, for example, they were soft-hearted or not. Then they were asked to make a list of their favorite food. According to their answers, the scientists found that the students who liked sweet food were nicer.

In their another experiment, the scientists found that people who preferred sweet food such as cookies and chocolate were more willing to help other people in need, and those who ate non-sweet food such as chips weren’t. For example, people with a sweet tooth were more likely to volunteer to clean up their city, visit sick children in the hospital and so on.

The result of the experiments is that people’s helpfulness or being nice has something to do with their taste for sweet food. So eating sweet food is a useful way to make people nice and helpful. Next time, try some ice-cream.

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Teeth are important. Strong, healthy teeth help you chew（咀嚼）foods that help you grow. They help you speak clearly. And yes, they help you look best. Here are some tips for you to take care of your teeth:

1. Brush your teeth in the right way.

Brush your teeth at least twice a day—after breakfast and before bedtime. If you can, brush after lunch or after sweet snacks, too. Brush all of your teeth, not just the front ones. Spend time brushing teeth along the sides and back of your mouth. Spend at least three minutes each time you brush. Play a song you like to help pass the time. Get a new toothbrush every three months. When you buy toothbrush, be sure it has soft bristles（鬃毛）.

2. Learn how to floss（用牙线清洁牙齿）your teeth.

Flossing is a very important way to keep your teeth healthy. Food may hide between two teeth. Flossing can help get rid of it. You'll need to floss your teeth at least once a day.

3. Have good eating habits.

You need to be careful about what you eat and drink. Eating sugar is a main cause of tooth decay（蛀牙）. Eat lots of fruits and vegetables and drink water instead of soda（苏打）.

Wang Fei is a twelve-year-old boy. He is lovely and smart. He is always the best in his class. But his classmates wouldn’t like to play with him because he has AIDS (艾滋病) like his parents. Even some teachers always keep away from him. Wang Fei felt sad.

One day he returned home with tears. He told his mother he fought with a boy because the boy said something bad about his family. His mother cried, “What did my son do? Why?”

①Now many people are afraid of AIDS because they know little about it. It is not so dangerous as we think.

(B)Safe, and, to eat, it’s, play with them, in fact. They need our love and understanding because they are the same as us.