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.

    Any time of the day you can devote to exercising is a good time for getting active, but if you want to make a healthy fitness plan, it may be helpful to keep several points in mind and find out the best time to exercise.

    First, try to know what kind of person you are. Especially, are you an early bird who always wakes up early in the morning, or a night owl(猫头鹰)who almost never goes to bed before midnight? Once you are generally aware of what your sleep characteristics are, you will have a better understanding of when your body needs exercise, either early in the morning, sometime during the day, or later on in the evening.

    Second, consider your daily plan. When do you seem to be most busy, and when do you plan your most important tasks? Try to fit in your exercise before or at least around these events if possible, so that you can keep exercising and your life won't be influenced as well.

    Third, think about when you feel you have the most energy. For most people, that time is usually in the morning after a good night's rest, or after a long day of work. After a busy or much stressful day, exercising can reduce your working stress from hard work.

    Lastly, find out the place you plan to do exercise. Your house provides exercise at any time if you own fitness equipment(设备)，but if there is a gym(健身房)down the street or along the way home from work, it will make it more suitable for you to exercise.

    More importantly, you need to make a plan and try sticking to it for one week. If you do so and can get through the exercise without being pulled in another direction, make it a habit. And once you have set up your fitness plan, don't make any great changes to it unless your doctor allows you to.

 A. What if you win      
 B. Life won't be the same without you

 C. Life isn't crystal stair.    
 D. There is a rainbow after every storm.

 E. Focus on the future.  
 F. To give up is to live a meaningless life

    The life has been full of challenges and difficulties. Life is not about the smartest person or the strongest person, or even the richest person. However, life is about having the mind in your heart "Never Give Up", even when you feel that giving up is the only choice. The world is waiting on your gifts.

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    You are important to this world and believe it or not, someone is waiting for you to enrich their lives. You are too important to the world to just give up.

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    You many feel that life is challenging you from time to time and you can't take it anymore. You may want to give up right now. But here is a thought, what will happen if you overcome the difficulties?

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    When an Olympic runner is in a race, he or she is focusing on one thing - the finishing line. You have to focus on the big picture – not just where you are right now. Focus in where you want to be. Make an agreement with your mind and your mouth.

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    One of my favorite poems is called "Crystal Stair" written by Langston Hughes. In that poem, a mother tells her son that life is tough, you will meet rocks and hard places, but the end is victory to those who stand their ground and ride the course.

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    Whatever you are facing, you can make it through. There is a rainbow on the other side of your situation. Stay strong, stay focused and never give up.

    Researchers say that nearly two thirds of children don't get enough sleep, and this can make them nervous and slower at school. So how long should young people sleep each night? The answer is between 8 and 10 hours. If you don't get enough sleep at night, you'll have less energy the next day.

    A report shows that children sleep less because they have TVs and computers in their rooms, and busy parents don't read to their younger children at night any more. The traditional "bedtime story" helps children to relax and fall asleep peacefully. Children with TVs and computers in their bedrooms were more likely to sleep badly, and to get less than eight hours' sleep. Even losing one hour's sleep a night can mean that children do worse than usual at school.

    British scientists think that your brain keeps working while you're asleep. To show that they were right, they have done an experiment. They gave two groups of people a problem to work out. One group went to sleep, and the other group stayed awake. You want to know the result? The people who slept worked out the answer more quickly. Researchers explained that their brains were trying to find the answer while the people were asleep. So, make sure you get enough sleep tonight, 'and you'll be at your best tomorrow!

    New rules and behavior standards（标准） for middle school students came out. Who are the most excellent students? Middle schools use a new way to decide that. The best students won't only have good grades. The following are some of the new rules.

    {#blank#}1{#/blank#} Have you ever copied others' work during an exam? Don't do it again. That's not what an honest student should do. If you played computer games for two hours in your room, don't tell your parents you were doing your homework.

    {#blank#}2{#/blank#} April is Bird-Loving Month in China. Is your school doing anything to celebrate? You should join! That way, you can learn more about animals and learn how to protect them.

    {#blank#}3{#/blank#} When your classmates are in trouble, remember to give them a hand. You know a friend in need is a friend indeed. Try to do more for others.

    {#blank#}4{#/blank#}Try to stay away from Web pages that are bad for you. Find good websites and use them for homework.

     {#blank#}5{#/blank#}Have you ever thought that people could live on the moon? Maybe you can discover a new planet someday. Don't look down on new ideas. You should welcome them because new ideas can make life better.

    Do you live in a city? Do you know how cities began? Long long ago, there were only a few thousand people in the world. These people moved from one place to another. They moved over the land, hunting animals for food.

    No one knows how or when these people learned about growing food. But when they did, their lives changed. They did not have to move any more.

    They could stay m one place and grow food there. People began to live near each other, so the first

    Villages appeared. Many people came to work in the villages, and these villages became larger and larger.

    Then people had machines. Life in the villages changed again. People built factories. More and more People lived near the factories, so the villages grew into cities. Some of them grew very big.

    Today, it's strange that some people are moving back to small villages. Can you tell me why?