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.

    My name is Sam．Yesterday I got up at about 8：00 in the morning．After taking a shower,I went into the kitchen to cook breakfast．Then I heard a strange noise(声音)．I thought it came from behind the cooker(炉具)．I took away the cooker,but I couldn't see anything．I called my friend Mike for help．He said it could be a gas leak(煤气泄漏)．I was scared．I ran out of my house to call the police．But then I remembered mat there was no gas in my house．So I walked back．

    Before I opened the door,I remembered one thing my mum told me"a llama(美洲驼)ran out of the zoo last Wednesday．I put my key in the door,turned it and opened the door slowly．I heard the noise again!1 walked into the kitchen．I found the noise was from a big box next to the cooker．I opened the box slowly．I saw a llama in the box!It was snoring(打鼾)!I called the zoo．The workers in the zoo came soon．They were happy to see the llama again and they gave me￡50 to thank me for helping them find the cute animal．

根据材料内容简要回答下列问题。

    Summer is a great time to get a new hobby. It's something that can start now and last all through the year. If you like music, think about some music lessons such as guitar or drum. You may think about joining in the music team for teens. You can also make some new friends there. Do you collect your favorite things? Now it's the time. There are many fun things to collect like postcards, especially sports cards. If you enjoy taking photos, you can choose the photography classes. And don't forget to share your wonderful pictures with your family members and friends. How about cooking? Try to read some books about cooking. Maybe you can cook with your morn. That will be great fun. If you are bored (无聊的) at home, bike-riding is also a hobby. Why not go bike-riding? You can get exercise as well as enjoy the beauty of nature. Maybe you have a nice summer.

Information Card

    When Ana Dodson was 11 years old, she travelled to Peru. She went on more than just a vacation. She was visiting her native country.

    Ana was born in Peru, but she was adopted(领养)by an American family and grew up in the USA. While in Peru, Ana wanted to know what her life could have been like if she had not been adopted. She visited several orphanages, including one in the hills of Cuzco, near her birthplace.

    "The orphanage was really cold and dry," Ana said. "The paint was falling off. The girls were in poor health."

    When Ana returned home, she kept thinking of the orphanage in Cuzco." I really couldn't get the girls out of my mind, and I really wanted to do something because I could have been one of those girls in that orphanage."

    Ana decided to start a group called Peruvian Hearts to help. Her goal was to improve orphans' living conditions. In the first two years, Peruvian Hearts raised about $18, 000 for the orphanage. The group also bought a chicken coop(鸡舍)so the girls can eat fresh eggs.

    Ana's efforts have been noticed. She won a Gloria Barron Prize for Young Heroes. The prize is given to kids who make a difference. Ana says any kid can do what she did. "Really believe in yourself, and follow your heart, "she says.