There are many kinds of trees. All trees have roots. The roots hold trees in the ground. The roots soak up ( 吸收 ) water and food. Then trees get water and food from the roots. You can't see inside a tree. But you can study how water moves through trees.

    First, get a stalk ( 茎 ) of celery ( 芹菜 ) and cut off its end. Put red colour in a cup of water. Then put the stalk of the celery into the red water. Then we can see the red water moving up in the celery easily.

    After half an hour, take the celery out. Cut it in half. Your celery should be red. This is because the water moved up the stalk. Water moves through trees in the same way as it moved through the celery.

    In England, people often talk about the weather because you can experience four seasons in one day. In the morning the weather is warm just like in spring. An hour 1 black clouds come, and then it rains hard. The weather gets 2 cold. In the late afternoon the sky will be clear, the sun will begin to shine and it will be summer at this time of a day.

    In England, you can also have summer in winter, 3 have winter in summer. So in 4 you can swim sometimes, and in summer sometimes you should wear warm clothes.

    When you go to England, you will see some English people take umbrellas or rain-coats with them on the 5 morning, but you shouldn't laugh at them. If you don't take an umbrella or a raincoat, you will regret later in the day.

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You know an apple is healthier than candy. But how do you make changes and eat really healthy food all the time? Start here with these wonderful rules.

You can finish all of the work in less than ten minutes.

Rule 1: Eat two pounds of vegetables. Remember to eat many vegetables every day. One pound is cooked and one pound is raw. They really help you to fight against some discases(疾病) and protect your health.

Rule 2: Put an egg on your meal. The egg is a kind of wonderful food. As long as you have eggs in your fridge, you can make a healthy meal with a fried egg, or add an egg to a bowl of rice.

Rule 3: Eat a little junk food. Junk food is delicious but it is not good for our health. But it's so cheap that you may like eating too often Eating it a little can be possible.

Rule 4: Eat some desserts(甜点) every day, but not too much. Not all desserts can make you fat. Some of them are delicious and healthy. A chocolate is a kind of dessert. And it's good for you to eat a little chocolate. Be smart enough to choose some desserts and try to improve your health.

What will our life be like in the future? Each family will have a  1  I in the future. You can ask it to do everything  2  you. It will serve you  3  hours a day. The robot will look like a (n)  4 . It can talk with you when you are  5  You won't know whether （是否）it is a human （人类）  6  a robot when you meet it on the street.

People will have  7  time to work and more time to travel. The vehicles （交通工具） in the future will fly freely in the sky because every vehicle will have wings with it. They will 8  you toa lot of places. You can go to  9  during your travels when you feel tired. All vehicles will not be  10  because the robots drive them.

If you want to go shopping, think about how much money you can spend for new clothes.Think about the kind of clothes you really need.Then look for those clothes on sale.

There are labels (标签) inside all new clothes.The labels tell you how to take care of your clothes.The label for a shirt may tell you to wash it in warm water. A sweater label may tell you to wash it in cold water.The label on a coat may say "dry clean only". Washing with water may ruin (损坏) this coat. If you do as the directions on the label, you can keep your clothes looking their best.Many clothes today must be dry cleaned.Dry cleaning is expensive. When buying new clothes, check to see if they need to be dry cleaned.You will save money if you buy clothes that can be washed with water.

You can save money if you buy clothes that are well made.Well-made clothes last longer.They look good even after they have been washed many times. However, clothes that cost more money are not always better made.They do not always fit better.Sometimes less expensive clothes look and fit better than more expensive clothes.