If you want to live for 100 years, you need healthy food and lots of exercise.
     In the morning, you have a big and nice breakfast. This help you start the day. For lunch and dinner,
you can have rice and vegetables. Healthy people seldom eat much snacks. Sweet snacks give you energy
but they're not healthy. You can have an orange or an apple after each meal.
    You need lots of exercise too. You can exercise for 30 minutes every day. After a month, you will feel
healthier. You can swim. You can run. You can play ball games. But don't play computer games or chat
with friends on the Internet for many hours every day. This is not exercise.
     Get up from your chair, everyone! Change your diet and lifestyle today! You can live for 100 years.
You can always feel young with right food and exercise.

1. If we want to live for 100 years, we need _______________ and enough exercise.
2. A nice _______________ can help us start the day.
3. Healthy people _______________ eat sweet snacks.
4. How long can we exercise every day? (回答问题) 
    __________________________________________________
5. _________is exercise. (选择正确选项填空)
A. Running
B. Playing computer games
C. Chatting on the Internet

     In the year 2000, the world's population was about six billion. That's 6 000 000 000!
     By 2025, scientists predict the world will have 7.8 billion people. (3). By 2050, there will be 9.1 billion
people.
     People live on land. About one-third of the world is land. There are seven continents: Africa, Asia, Australia, Europe, North America, South America and Antarctica. Antarctica is the world's coldest and the world's driest
continent.
    The world has four main oceans. (4) They are: the Pacific Ocean, the Atlantic Ocean, the Indian Ocean
and the Arctic Ocean. Oceans cover about three-quarters of the earth's surface. 不是所有的陆地都适合人们。(5) Some land is too dry. The land is called desert. Deserts cover one-fifth of the earth's surface.

1. How many people were there in the world in 2000?
    _____________________________________________________________________
2. Which continent do you live in? 
    _____________________________________________________________________
3. 把该句译成汉语。
   ______________________________________________________________________
4. 就划线部分提问，把该句变成特殊疑问句。
   ______________________________________________________________________
5. 把该句译成英语。
   ______________________________________________________________________

     Trees are useful to man in three important ways: they give him wood and other useful things, they give
him cool places, and they help to stop drought and flood.
     Unluckily, in many parts of the world, man has not found that the third of these points is the most
important. Man wants to make money from trees, so he has cut them down in large numbers, only to find
that without them he has lost the best friends he had. And also, he is usually too careless to plant and look
after new trees. So the forests slowly disappear.
     This does not only mean that man will have fewer trees. The results are even worse: for where there are
trees, their roots break up soil (土壤)-make the rain in-and also bind (粘合) the soil, thus (这样) stopping it
from being washed away easily; but where there are no trees, the rain falls on hard ground and flows away,
causing floods and carrying away the rich top-soil. When all the top-soil is gone, nothing is left but useless
desert.

1. The most important points of trees to man is that ________.

A. they help him to make money
B. they give him cool
C. they give him wood and other things
D. they help him to stop drought and floods

2. In many places forests slowly disappear because ________.

A. many trees have been cut down by man
B. new trees are not well looked after
C. man has not paid enough attention to planting trees
D. all the above

3. Land becomes desert after all trees are cut down because ________.

A. roots of trees break up the soil
B. there are too many rainfalls
C. strong winds bring a lot of sand
D. there are no longer trees to keep the rain and protect the top-soil.

4. Which title best fits the passage?

A. Trees and Man
B. The Function of Tree Wood
C. How do People do with Trees
D. The Usage of Tree Roots

     Earth Day is birthday! It is a special day that celebrates the earth. Earth Day was born on April 22, 1970,
in San Francisco, California. Every year, over 100 different countries join together in the celebration of Earth
Day. It is the largest, most celebrated environmental event around the world. On Earth Day, we remember
nature and learn ways to protect our environment.
     You can do lots of good things for the earth. Here are some ideas to keep in mind.
     *Recycle cans, bottles, and paper. Save them at home and at school, and help your family recycle them.
     *Ride your bike or walk to school to keep the air clean.
     *Use both sides of your paper at school and at home.
     *Turn off the TV when you've finished watching it.
     *Don't leave the water running while you brush your teeth.
     *Turn off the lights when you leave the room.
     And remember: Don't ever think you're not important to our earth. You are!

1. When is Earth Day?

A. On April 22.
B. On April 23.
C. On May 22.
D. We don't know.

2. How many ideas are mentioned to help save electricity?

A. One.
B. Two.
C. Three.
D. Four.

3. What is Earth Day about?

A. Cars.
B. Lights.
C. Paper.
D. Environment.

4. Which of the following is not talked about in the passage?

A. How to save water.
B. How to keep the air clean.
C. How to keep the water clean.
D. How to recycle something.

5. From the last sentence, we know that _______.

A. everyone should do good things to the earth
B. everyone is necessary in the world
C. you should remember Earth Day
D. Earth Day is the most important day