The population of the Earth is growing faster. It is important that we look after the Earth. We need it!
The Earth gives us a lot of things. We also give the Earth a lot, but some of the things are not good.

In nature, when something dies, other animals and plants get food from it. Every animal or plant gives food for other animals or plants. However, animals can’t get food from many of the things that we ‘give’ the Earth. Animals and plants can’t eat metal, plastic and glass. These things will stay in the ground for many, many years.
Some rubbish is very dangerous for plants and animals. In some places, many animals live together. One animal makes food for many more animals. If we put rubbish and chemicals in the water, the plankton(浮游生物) can die. If there isn’t any plankton, many animals have nothing to eat.
So what can we do? Don’t leave any rubbish in the countryside! Don’t make so much rubbish!
【小题1】The Earth gives us ___________.

America is growing older. Fifty years ago, only 4 out of every 100 people in the United States were 65 or older. Today,10 out of every 100 Americans are over 65. The aging of the population will affect American society (社会) in many ways —education, medicine, and business. Quietly, the growing of America has made us a very different society —one in which people have a quite different idea of what kind of behavior is suitable at various ages.
A person’s age no longer tells you anything about his/her social position (职位、地位), marriage or health. There’s no longer a particular year in which one goes to school or goes to work or gets married or starts a family. The social clock that kept us on time and told us when to go to school, get a job, or stop working isn’t as strong as it used to be. It doesn’t surprise us to hear of a 29-year-old university president or a 70-year-old man who has become a father for the first time. Public ideas are changing.
Many people say, ‘I am much younger than my mother—or my father—was at my age.’ No one says ‘ Act your age’ any more. We’ve stopped looking with surprise at older people who act in youthful ways.
【小题1】It can be learnt from the text that the aging of the population in America ______.

Australia is the smallest continent(洲) in the world. It is a little smaller than China. It is near the south of the equator(赤道).So when it is summer in our country, it is winter in Australia.

Australia has a small population (人口).The population of Australia is nearly the same as that of Shanghai, a city in China.

Australia is famous for its sheep and kangaroos. After driving for a short time from any town, you will find yourself in the middle of white sheep. Sheep are everywhere. Have you seen a kangaroo? It has a “bag” below its breast(胸). The mother kangaroo keeps its baby kangaroo in the “bag”. It is very strange, isn’t it?

1.China is __________than Australia.

2.It is ________in Australia when it is summer in our country.

3.Australia is famous for its  _________.

Life in the future will be different from life today. Between then and now many changes will happen. But what will the changes be?

The population is growing fast. There will be many people in the world and most of them will live longer than people live now.

 Computers will be much smaller and more useful，and there will be at least one in every home. And computer studies will be one of the important subjects in schools then. People will work fewer hours than they do now and they will have more free time for sports，watching TV and traveling. Traveling will be much cheaper and easier. And many more people will go to other countries for holidays.

 There will be changes in our food，too. More land will be used for building new towns and houses for all the people. Then there will be less room for cows and sheep，so meat will be more expensive. Maybe no one will eat it every day. Instead，they will eat more fruits and vegetables. Maybe people will be healthier. Work in the future will be different，too. Robots will do dangerous and hard work. Because of this，many people will not have enough work to do. This will be a problem.

1.In the future there will be ______.

A. much more fruit  B. fewer people

C. less vegetables  D. less people

2.Every family will have at least a ______ in the future.

A. robot           B. cow                   C. TV set       D. computer

3.In the future people don't have to ______.

A. work long hours  B. work fast C. walk on foot  D. eat meat

4.People may not eat ______ as much as they do today.

A. fruit         B. fish    C. meat    D. rice

5.One big problem in the future is that ______.

A. many people don't have to work

B. many people will not be able to find work

C. people have to work fast

D. all the work will be done by robots