The  1  is getting colder, and soon winter  2  shorter. We live in warm houses and we  3  thick coats when we go outside. But 4  do animals stay warm in winter?

Adapt(适应)

    Some animals keep  5  in winter, so they must adapt to the changing weather.  6  warm, they may grow new, thicker fur in  7 autumn.

Migrate(迁徙)

    Some of the animals migrate. That means they travel to other places  8  the weather is warm or they can find food.

Hibernate(冬眠)

    Some animals hibernate for part or  9  of the winter. These animals usually find a cave or a hole under the ground to spend their winter. The body temperature of the animals drops, their heart beats more slowly and they breathe  10  .

    In the years, I will be 24 years old. Our city will be a1living place then. There will be many tall buildings and trees. Many people will visit our2. Almost every family will have one or two solar(太阳能的)cars.

    People will3their cars to work every day. The libraries will have more computers, and people can 4books on them. The restaurants will have robot waiters to bring you 5. Schools will have more teachers from England to6you English. With the7of new transportation(交通方式), travel will be fast. You can only need two8to get to Africa! Machines and robots will do heavy and difficult jobs9we will have more time. What do you think? Do you think this idea about life10will come true?

    In some science fiction films, people in the future have their own robots. These robots are just like humans. They help with the housework and do the most1 jobs.

    Some scientists believe that there will be such robots in the future. However, they agree it may take hundreds of years, Scientists are now trying to make robots look like people and2 the same things as us. Japanese companies have already made robots walk and dance. This kind of robot will also be fun to watch.

    But robot scientist James White disagrees. He thinks that it will be3 for a robot to do the same things as a person. For example, it's easy for a child to4and know where he or she is. 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.525 to 50 years.

    Robot scientists are not just trying to make robots look like people. For example, there are already robots 6 in factories. These robots look more like huge arms. They do simple jobs over and over again. People don't like to do such jobs and will get bored, But robots will7 get bored.

    In the future, there will be more robots everywhere, and humans will have8 work to do. New robots will have many different9. Some will look like humans, and others might look like10 ， After an earthquake, a snake robot can help look for people under buildings. That may not seem possible now, but computers, space rockets and even electric toothbrushes seemed impossible a hundred years ago. We never know what will happen in the future!

    There are many ways for us to reduce waste. For 1, we can reuse paper and plastic bags. We can also recycle newspapers, glass, and cans to2 new things. Here are some 3 ways to reduce waste.

Write on 4 sides of paper.

    Many people write on only one side of their paper. Why not stop 5the other side? Some students only use half the pages of their notebooks before getting new ones. Try to use up all the paper. People often give cards on birthdays or festivals. How about trying to 6 e-cards instead?

Don't throw away your old batteries (电池).

    Maybe you do not know that old batteries make the earth dirty. This is 7  they have poisonous parts in them. So, don't throw away batteries. Keep them together. Try to use rechargeable (充电的) batteries for your games and CD players.

    Give off all your unwanted clothes.

    There are many poor families in China. You may ask your mother to 8 your unwanted(多余的) 9. Then you can pass them on to those poor children. You will feel 10that you are helping someone else. Also, you can understand if your friends or relatives (亲戚) want them before throwing them away.