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    It is a Saturday morning．You have your breakfast，walk the dog，and then go to soccer practice on time．A few hours later, you return home，only to find that the dog has made your bedroom untidy．Your clothes are on the floor．{#blank#}1{#/blank#}．

    Before you get angry, you should stop and think．Your dog wasn't misbehaving(捣蛋)just for the fun of it．And he wasn't punishing(惩罚)for leaving．{#blank#}2{#/blank#} It's called separation anxiety(分离焦虑)

    Thank of it this way :Dogs ask where you're going or when you'll be back．{#blank#}3{#/blank#}All they know is that they want to be with you．Since you're not there，they need to find you．Dogs may suddenly develop separation anxiety．But with practice and patience(耐心)，you can teach your dog to be comfortable being left alone．

    Put on your jacket，and then sit down．{#blank#}4{#/blank#}After a while，walk out the door for 1 minute，then 2 and so on．Little by little your dog will learn that when you leave，you will return．

    {#blank#}5{#/blank#}

    Teach your dog a word or action that you use every time you leave，which tells your dog you'll be back．

    ·Before you leave，give your dog a toy(玩具).It will keep him busy while you're away．

    Top students always have special ways of learning that others probably can't learn. Here are some of their secrets.

    Study at any time and everywhere. Some work late at night. Others work early in the morning. And some others study as soon as they come back home. All the ways are OK, but you should keep your own.

    Learn how to read. The secret of good reading is to be an active reader. Asking questions makes a full understanding of the book.

    Plan your time. If you want to be the top, make sure to finish all tasks on time.

    Keep your papers clean. Clean papers are likely to get higher grades than dirty ones.

    Top students often make up possible test questions（模拟测试） themselves. It helps them find exams much easier.

    Do more than what your teacher asks. The more you practice, the more you learn.

    Have you ever stayed in a hotel? Most Chinese hotels often provide guests with things like disposable(一次性的)toothbrushes, toothpaste, shampoo and slippers.

    Many guests like the idea because they don't have to bring their own. But, if you travel to Beijing, remember to bring your own things. Starting from June, some hotels in Beijing will no longer provide guests with these disposable things. They want to ask people to use less disposable things.

    Many disposable things are made of plastic. People throw them away after only using them once. It is a waste of natural resources(资源)and is very bad for the environment. Do you know, one Chinese person makes as much as 4o0kg of waste a year！ Most of that waste comes from disposable things. In Beijing, people throw away about 19, 00C tons of plastic bags and 1, 320 tons of plastic lunch bowls every year！Plastic can take between 100 and 400 years to break down. So the less plastic we throw out, the better. So, wherever you travel, bring your own things and use them again and again.

    Back at home and school, you can also do something to make our world a better place. Try to do these things in your daily life: Use cloth shopping bags, not plastic ones. After using a plastic bag, wash it out and let it dry. Then you can use it over and over again. Do not use paper cups. At your school dining-room, use your own bowl and chopsticks instead of disposable ones.

    To protect our environment and our home, it is very necessary and important for us to save natural resources.