Believe it or not,oceans and seas are easy to be harmed by the development of human society．They are also influenced by man-made pollution easily．It is human beings that do great harm to the ocean ecosystem(生态系统)．

The coral reefs（珊瑚）that provide food and protection for many ocean creatures（生物）is important toecosystems．However, the coral reefs in almost all the oceansare in dangerof pollution.Chemicals from factories end up in the oceans and destroycoral reefs.If the coral system die,some ocean creatures will be sure to die out．

Protecting the ocean also has something to do with the protection of ocean wildlife like dolphins.The fishing industry depends on modern ways to catch many fish in order to earn more money.But net for fishing also catch other sea animals.The fishing boat workers are advised to check their nets and set other ocean animals free.But the boats are in a hurry to make money and often other ocean animals are caught with fish．

Oil spills(溢出) can destroy the ocean environment because oilcankill all ocean life．The world depends on oil and there is plenty of oil off the shore in many countries.The need foroil is more important than the risk of the oil spill.However,the fact is that one ocean mistake can lead to an ocean environment accident. Itwill cause years ofdamageto the financial ecosystems andkill all the creatures in the area of the spill.The oil will be washed up on the shore and destroy ecosystems along the shore，including birds．

Everyone who cares about the environment should pay more attention to protecting the ocean,and all of us should do something for the protection of the ocean．

There have always been a lot of commonly believed but false (虚假的) ideas about being fat and doing exercise. Some people believe that they can’t help putting an weight as they get older, while others hold that if they stop exercising, their muscles (肌肉) will turn into fat. Here are some more myths (神话).

I’ll never lose weight--I come from a fat family

Wrong! While we canˈt change the body type we are born with, we can’t blame our genes (基因) for making us fat. There’s plenty of evidence that fatness runs in families, and the main reason is that they share the same habit of eating too much and exercise too little.

I am fat because I burn calories slowly

Wrong! Fatness is not caused by a slow metabolism (新陈代谢). In fact, although fat people consume (消耗) more energy than slim people, they also fail to realize how much they eat. Keeping a diary can help you work out your daily food intake more accurately (精确地).

Exercise is boring

Wrong! Anything will become boring if you do it again and again. The key is to develop a balanced and varied (各种的) program that’s fun as well as progressive (不断进步的). If you enjoy a Sunday walk, take a different mute. If you do yoga (瑜伽), try a tai chi class.

No pain, no gain

Wrong! Exercise is not meant to hurt. Indeed, pain is your body telling you something’s wrong, and continuing to exercise could lead to serious injury (伤害). You may experience mild discomfort as you begin to exercise regularly, but this is your body adapting to the positive changes in your lifestyle and the aches should disappear quickly. If they donˈt, rest and ask for medical advice.

     Scientists have learned a lot about the kinds of food people need. They say that there are some kinds of food that people should eat every day. They are green and yellow vegetables of all kinds; citrus（柑橘）fruits and tomatoes; potatoes and other fruits and vegetables; meat of all kinds, fish and eggs; milk and foods made from milk; bread or cereal(谷类), rice is also in this kind of food; butter, or something like butter.

     People in different countries and different places of the world eat different kinds of things. Foods are cooked and eaten in many different kinds of ways. People in different countries eat at different times of the day. In some places people eat once or twice a day. In other countries people eat three or four times a day. Scientists say that none of the differences is really important. It doesn’t matter whether foods are eaten raw(未加工的) or cooked, canned(灌装的) or frozen(冷冻的). It doesn’t matter if a person eats dinner at 4 o’clock in the afternoon or at eleven o’clock at night. The important thing is what you eat every day.

     There are two problems, then, in feeding the large number of people on the earth. The first is to find some ways to feed the world’s population so that no one is hungry. The second is to make sure that people everywhere have the right kinds of food to make them grow to be strong and healthy.

   In all the world’s cultures, people sing, play instruments, and celebrate with music. It plays such an important role in our lives that whole fields work hard at its study, including one looking at the biology of music. Experts are finding that because of the way our brains process (处理) music, learning to play an instrument or just listening to music can have a wide range of benefits (益处).

Music education has received a lot of attention. Learning to play an instrument can help children improve math, science, and language skills. One study in Canada tracked (跟踪) children’s IQ scores for nine months, discovering that children who studied music had the biggest test score improvements. The secret may lie in the way reading music and playing notes uses several areas of the brain, increasing our ability to learn school subjects.

Music is also used for medical purposes, such as the treatment of diseases which affect (影响)  memory. Scientists explain that one area near the forehead connects music with memories. That’s why an old song can remind you of something that happened years ago. For patients suffering from diseases, listening to music can help unlock buried memories by building up musical pathways to memories.

Studies of the music-brain connection often concentrate (集中) on classical music, since it activates (激活) both the left and right sides of brains. One study found that brain activity was the highest during the short breaks between the movements of a piece of music. During each break, the person’s brain predicted what would come next, while organizing what he had just heard. This process is similar to the way our brain organizes information. It may explain why classical music can help improve memory. Some people even take the music-brain connection to another level by listening to personalized “brain music”, which can help a person concentrate and prepare for a difficult task.

    It’s amazing how attuned our brains are to music. Some scientists even think we’re born with the ability to learn music, just as we all have the skills to learn languages. After all, children without any training often make up songs while playing. With the evidence of music’s benefits pouring in, it’s no wonder some countries make music study a part of their education system. People are realizing that music is more than just a form of entertainment.

There is a zoo near my home. I often go there to  (1)  the animals. There are many kinds of animals  (2)   it. They’re tigers, elephants, giraffes, koalas and so on（等等）.   (3)   are very scary. I don’t like  (4)  . I like elephants because they’re smart. They can help people  (5)   much work. Giraffes are beautiful. They eat leaves  (6)   the trees. They don’t eat  (7)  . Koalas are my favorite. They are very cute and interesting. They’re from  (8)  . They also eat leaves,  (9)  they don’t eat meat. They sleep during the day and  (10)  up at night.

    Do you like animals? Do you often go to the zoo? What animals do you like? Well, can you write and tell me about them?

 The weather is getting hotter. You are thirsty after playing basketball or riding home from School. A cold drink may be just the thing. But be careful of what you are drinking. Something that looks cool may not be good for our health. There are plenty of “energy drinks” on the market. Most of them have beautiful colors and cool names. The lists on them tell you they are helpful to your health. Sounds great!

 But after a careful check you may find that most energy drinks have lots of caffeine (咖啡因) in them. These drinks are especially aimed at young people, students, busy people and sports players. Makers sometimes say their drinks make you better at sports and can keep you awake. But be careful not to drink too much.

  Caffeine makes your heart beat fast. Because of this, the International Olympic Committee has limited( 限制) its use. Caffeine in most energy drinks is at least as strong as that in a cup of coffee or tea. Possible health dangers have something to do with energy drinks. Just one box of energy drink can make you nervous, have difficulty sleeping and can even cause heart problems. Scientists say that teenagers should be discouraged from taking drinks with a lot of caffeine in them.