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    Most people hope to have a memory which helps them succeed in study, work and life. Can memory be improved? Luckily, hundreds of studies in the past 50 years have already given us a definite answer.

    A healthy lifestyle keeps our brain young and memory sharp. First of all, it is necessary to have a healthy diet. Eating more food rich in B vitamins and vitamin E, such as vegetables and lean meat, helps you have a better memory. Doing exercise can keep your brain alive, too. Proper exercise provides much oxygen for the brain. Running, riding a bike, swimming and even walking two or three times a week are helpful. Moreover, getting enough sleep is important. Only when your brain gets a good rest, can it work well. The healthier your lifestyle is, the better your memory will become. But do not expect a sudden change－it takes a long time to make a difference.

    Memory stills help you remember things better. The following three are the most widely used. Chunking is a way of remembering a piece of information by cutting it into small ones. For example, to memorize a ten-digit telephone number 2127983630, you can divide the digits into three groups: first 212, then 798, and lastly 3630. This method is far more effective than remembering a string of 10 digits. Organization means organizing information into groups of the same kind. For example, trees, grass and flowers are plants; tigers, pandas, horses and cows are animals. Imagery is remembering newly learnt information by using your imagination and connecting it with something that you are familiar with.

    However, memory skills will hardly work if you don't understand the information. What's more, only a regular review can make the memory last long. That is why students are always advised to go over what they have learnt and then use it as regularly as possible.

    Human brains are like muscles that needs nutrients and exercise to become stronger. If you make a few lifestyle changes and try some memory skills, you can certainly improve your memory.

    Wouldn't it be funny if your mum said to you, "It's time for bed, honey. It's almost November!" Well, if you were a baby bear, your mother might let you know it's time to go into a deep sleep around October.

    That "deep sleep" is called "hibernation (冬眠)". When it gets cold, bears have to go into hibernation. By taking this long sleep, they can get through the cold months when the food, like berries (浆果) and nuts, cannot be found easily.

    Have you ever heard someone say that they are as hungry as a bear? Bears need to eat a lot of food before hibernating. They eat so much that they may put on forty pounds of fat in a week. During the winter "bears will live off the fat stored in their bodies. Bears are able to do that because their bodies use a lot less energy during hibernation. Their heartbeats slow down, their breathing slows down, and their body temperature drops.

    If you were going to sleep all winter, wouldn't you want to be in a safe and protected place? That is what a bear wants, so it looks for a cave to sleep in. It makes a bed using grass, leaves and twigs (嫩枝). The bear usually starts to hibernate as early as October and doesn't wake up until April or May. By the time the bear wakes up, it will have lost much of the fat. But spring time will bring much food to enjoy until it is time to hibernate again in the autumn.

    The sea looks very beautiful when the sun 1 on it. It can be very terrible when there is a 2 wind.

    The sea is very 3. It covers three quarters(3/4) of the earth. The sea is also very 4 in some places. There is one place, the sea is about 11 kilometers deep there. 5 mountain in the world is about 9 kilometers high. If that mountain was 6 the sea at that place, there would be still 2 kilometers of water 7 it!

    In most parts of the sea, there are 8 fishes and plants. Some live near the top of the sea. Others live deep down. There are also a lot of small living things. Lots of fishes live by 9 them.

    The sea can be very 10. When people go down, the sea becomes colder and colder. Only some men can go down into the deep sea. But, in 1970, five women scientists lived in the deep sea for fourteen days.

    The best time to collect green leaves is early in summer but not so early. The months of June and July provide the best leaf samples (样本) but you can find great leaf samples throughout the summer. To make a full colour collection, you have to collect leaves in autumn. I have seen many beautiful fall colour collections.

    When you select leaves for your collections, try to select leaves of about the same size and shape on the tree. Make sure you should collect the complete leaves.

    Remember, simple leaves have only one blade (叶片) or leaflet. Compound leaves have several or many leaflets. You must know these two kinds of leaves. Good leaf collections contain the entire leaf. That is a small part of the twig (嫩枝) with a lateral or terminal bud (芽).

    When you collect leaves in the field, you can place them between the pages of a magazine to protect them. And then, press them as soon as possible before you remove them from this magazine. You should dry the collected leaves carefully before placing them in a leaf press. Finally, place them in a leaf press. You should write down each leaf's name and these names should follow the leaves until the exhibition comes.

    "Mirror (镜子) mirror on the wall, what film is on in the cinema?"

Now with this kind of new mirror, you can brush your teeth and read news at the same time in your bathroom. Now not many people have this kind of mirror, but it will be popular very soon.

    The mirror works with new software(软件). You can use it to get news. You can also make your time table on it. It can also tell you what to wear because it knows the weather. The mirror is very clever. You can write notes on it for family members.

    There's another kind of new mirror, too. It can get much information from the user's clothes. It tells the users what clothes make him or her look good. Going shopping or eating out? Wait a minute! The mirror can give you some coupons(优惠券), too.