Many people believe that yellowing and wetness are the greatest enemy of stamps. In fact, stamps are afraid of not only wetness, but also light and dirty things. People protect their stamps in several different ways.

 To protect stamps,we should never touch the stamps with our hands.This avoids moving dirty things onto them. Stamp tweezers (镊子) should be used in all conditions.

 Stamps are printed things. The colour will slowly disappear if the stamps are put in the light for a long time. So we should not put stamps in the light for long. Direct sunlight must be avoided as well.

 Wetness is an important  problem for stamps. Some  collectors  will put stamps  in separate plastic (塑料) bags. However, it is possible that some stamps have taken in some water from the air before they are put into the plastic bags.Stamps yellow easily and rapidly after they take in wet air.To protect the stamps, some people also put the stamps into a special room which has a machine to  keep the air cool and dry. However, not many people can afford that.

 To keep stamps, stamp collectors usually put them under plastic covers. It is a common and simple way. This helps because the plastic cover keeps the stamps off the wet air. It also stops the fingersfrom touching te stamps.

 Some  collectors  prefer  to  store  stamps  inside  a  plastic  box  with  desiccants  (干燥剂).However, we should take care not to let the stamps. touch the desiccants. On top of that, don't  take your stamps out on a wet day.

    What do you eat every day? Some people think about it. And some people will not make plans for their meals.

    Many people like to have fast food near their offices. This kind of food can make them fat and it is bad for their health. Even it will make them ill when they are old.

   What should a healthy person eat every day? Well, I will tell you the 'healthy eating habit(习惯)'. It comes from doctors.

     When people do a lot of work, the energy is burning(燃烧). So you need noodles, rice, milk, bread and eggs. If you don't eat them, you will feel tired. You should eat fruits and vegetables, too. There are a lot of vitamins（维生素） in them. They can make you strong. And they can give you water.

( B )

    Sue and Bessie are sisters. They are Americans. They live in the mountain village. Sue is 104 years old and Bessie is 102 years old now

    Here is some of their advice for living a long and healthy life.

    Get up early. They get up at 6:30 in the morning.

    Have a good breakfast. The sisters eat oatmeal (燕麦片),half a banana, bran (麸皮) and eggs with a little cheese.

    Take exercise every day. The sisters like to do yoga (瑜伽).They also walk every afternoon.

    Eat a lot of fruit and vegetables, especially apples. Apple is good for your health.

    Don't eat a lot of salt and fat (脂肪). These things are bad for your body.

    Don't get married (结婚). The sisters have no husbands or children to worry about.

    Don't always listen to the doctors. Most of the doctors don't know what to do with us. When something is wrong with us, they don't know how to treat (治疗) us. They are always surprised (感到惊奇) to see us live so long.

    Do you agree with the sisters?

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    It is said(据说) that about half of the people in China smoke. Many young boys and girls have the habit of smoking, though they are middle school students.

    More and more people have come to realize how serious this problem is. But they are never bored with it. ①Some people think it is a kind of fashion, some think it is of great fun and others think that smoking can refresh themselves(提神).

    Smoking causes many illnesses. A lot of people always cough ②_________ _________smoking. The most serious illness caused by smoking is lung cancer(肺癌). At the same time smoking is a waste of money. Besides, careless smokers may cause dangerous fire.

    ③吸烟有害我们的健康。In order to keep healthy, we should get rid of the bad habit of smoking. Please stop smoking at once.