Can you name some foods in the meat group? Can you tell where they come from?

Your body is made up of (组成) millions of cells (细胞). Cells are very small.

Your body has to make new cells in order to grow. It also has to make new cells to take the place of the old cells that have been worn out.

To grow, the cells need a thing called protein (蛋白质). The protein you need most comes from foods in the meat group.

Fruit and vegetables are plant foods. Foods in this group give your body vitamins and minerals(矿物质). Your body needs vitamins and minerals to grow and to stay well.

The third food group is made up of bread. These foods come from grain. Your body gets heat and energy (活动) from these foods. It needs a lot of energy to work and play.

Milk is one of the best foods your body can get. It has protein, vitamins and minerals. Milk is good between meals or with meals.

Some foods are not listed in the four main groups. This is because you do not have to think about eating these foods. You eat them if you eat foods from the four main foods.

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There is a famous English saying “You are what you eat”, and it means 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（避免） 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(小甜饼)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(结果) 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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    Many people can’t get good and enough sleep because they are busy working and studying. Do you often wake up in the night? Can you get up easily on time? Do you feel tired after getting up? Can you put your heart into the class? Do you feel sleepy during the daytime? If your answer is yes, that means you get a bad night’s sleep.

But how to get good and enough sleep?

First, never drink coffee before bedtime. Second, don’t eat too much. Third, you candrink some milk before going to bed. Fourth, go to bed and get up at the same time every day.

Another way is to count numbers (数数) in your heart. It can give you fast sleep. Less than eight hours is not enough. Let’s keep a good sleep habit.

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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:

  1Brush your teeth 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).

2Learn 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.

3Have good eating habits.

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

Many people can’t get good and enough sleep because of the stress of working and studying. Do you often wake up in the night? Can you get up easily on time? Do you feel tired after getting up? Can you put your heart into the class? Do you feel sleepy during the daytime? If your answer is yes, that means you get a bad night’s sleep.

But how to get good and enough sleep?

First, never drink coffee before bedtime. Second, don’t eat too much. Third, you’d better take a shower before going to bed. Fourth, go to bed and get up at the same time every day.

Another way is to count numbers (数数) in your heart. It can give you fast sleep. Lying on the bed for long doesn’t mean you will have good sleep. It’s important for us students to get good and enough sleep. Less than eight hours is not enough. Let’s keep a good sleep habit.

根据短文内容，选择正确答案。

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. 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.

根据短文内容，选择正确答案。

     It is no surprise that more and more people like bicycling. It is fun, healthy and good for the environment. Maybe that’s why there are 1.4 billion bicycles and only 400 million cars on roads worldwide today. Bike can take you almost anywhere, and there is no oil（油） cost!

Get on a bicycle and ride around your neighborhood. You may discover something new all around you. Stopping and getting off a bike is easier than stopping and getting out of your car. You can bike to work and benefit from the enjoyable exercise without polluting the environment.

You don’t even have to ride all the way. Folding(折叠) bikes work well for people who take the train. Just fold the bike and take it with you. You can do the same on an airplane. A folding bike can be packed in a suitcase. You can also take a common bike with you when you fly. But be sure to look for information by visiting airline websites. Not all airlines are bicycle friendly to travelers.

Health Benefits of Bicycling:

◇It helps to prevent heart diseases.

◇Bicycling helps to control your weight.

 A 15-minute bike ride to and from work three times a week burns off kilos of fat in a   

 year.

◇Bicycling can improve your mood

Exercise like bicycling has been shown to make people feel better. More relaxed and self-confident. In short, bicycling is healthier than driving.