Stress is the feeling you get when you're really worried about something. This is the kind of worry that troubles you for hours, or 1 days. It makes you feel blue, scared or angry. You may find it 2 to eat and sleep, or you might eat and sleep much more than usual.
Too much stress is bad for you. Stressing out can lead to serious 3 like heart illnesses. But a moderate (适度的) amount of stress keeps your body and 4 alert (警觉的) and can make your performance better, like when you are doing a presentation to your class or 5 to the finishing line.
    But, if you are seriously stressed out, look at these quick and easy ways to 6. Firstly, you can go for a run, play tennis or ride your bike for a while 7  exercise produces more beta-endorphin(B-内腓) that controls stress. Secondly, having a good 8 is very important. You should try to get at least eight hours of sleep every night. Thirdly, eating a healthy, balanced diet that 9 all the food groups will help. Also, you can talk to the people you trust . Keeping your feelings inside may make the situation10 while talking to a person you trust may make you feel better. They may be able to give you advice and help you solve your problem.

    Elephants are the largest living animals on land. More than 5001 kinds of elephants were found on the earth over the last 55 million years. Only  2   kinds are still alive today: the African elephant and the Asian (or Indian) elephant. These elephants can only be found in  3   places. However, the older kinds lived in cold places a long time  4 . An example is the mammoth (猛犸象) — the largest hairy elephant.

    The mammoth was the largest living elephant, which was about seven tons. 5  the elephants today, mammoths had black or dark brown hairs 6 their bodies. All the mammoths had tusks (长牙).

    Scientists found most of the extinct (灭绝的) animals by 7  the fossils,  8  their bones and teeth that could be found. However, mammoths are quite different. During the Ice Age, mammoths died and were covered  9 in the ice. The ice kept them very well. So scientists could find the  10  body of the mammoth.

    What do you think of robots? Will they work for humans in the future?  Maybe we can't answer it.But robots have 1 an important part in our daily life for several years .But in some science fiction movies, the robots are just like humans. Now they help humans with the housework and do the most 2 jobs.

    Many scientists believe that there will be such robots in the future.3they agree it may 4 hundreds of years. Scientists are now trying to make robots look like people and do the same things as us.

    But robot scientist James White 5 He thinks that it will be 6 for a robot to do the same things as a person7 it's easy for a child to wake up and know where they are. Mr. White thinks that robots won't be able to do this. But other scientists disagree. They think that robots will be able to talk to people 8 25 to 50 years.

    Robot scientists are not just trying to make robots look like people. For example, there are already robots working in factories. They do many 9 over and over again. People would not like to do such jobs and would get bored. But robots will10 get bored.

    In the future, there will be more robots everywhere, and humans will have 11 work to do. New robots will have many different12. Some will look like humans, and13 might look like snakes. After an earthquake , a snake robot could help look for people under buildings. That may not seem possible now, but computers, space rockets and even electric toothbrushes 14 impossible a hundred years ago. With the 15of science technology. We never know what will happen in the future! Let's work much harder to make robots serve us better!

    As we know, there are four seasons in a year. When spring 1, it's getting warmer and warmer. Everything comes back to life. Trees turn 2. There are beautiful flowers and grass here and there. Children can 3 kites in the sky. 4 summer, the weather becomes hot. 5 people can take part in more activities outside, such as running in the morning, taking a walk in the evening, going camping, 6 in the river, travelling with family, and so on. 7 comes after summer. It's a harvest season. We can taste 8 of fresh fruits. The weather is neither too hot nor too cold. People feel comfortable. It usually snows in winter in my home town. Snowing 9 me excited. Children are 10 in making snowmen outside. A heavy snow will predict a good year. The four seasons bring us happiness and pleasure. We should love and treasure (珍惜) them.