In 1972, the United Nations hold a meeting in Sweden

1．________

to share ideas about ways to take better care for the

2．________

earth．At the summit, people from more than one hundreds

3．________

countries discussed some of the important problems faced

4．________

our planet．Since then, several Earth Summits had been held．

5．________

In 2002, the Earth Summit was held in Johannesburg．

6．________

One of the main theme was “sustainable development”, or

7．________

the question what we can continue developing the world

8．________

without damage the environment．Most of the speakers

9．________

talked the three biggest killers in the world．

10．________

On my way to home last Friday afternoon, I saw a young

1．________

lady walking slowly in the street with handbag in her hand．

2．________

A young man ride a bike came up, seized the bag suddenly and

3．________

took it away．The lady could do nothing but crying for help．

4．________

Just then I happened to be walking around the corner and

5．________

saw that had happened．I had a box with me so I

6．________

throw it on the street．When the man rode along,

7．________

the bike hit the box and he fell．But we caught the

8．________

fellow and got back the handbags．The lady was thankful to

9．________

myself．I said with a smile, “ Well, it doesn't matter．”

10．________

1．________

It gets more and more difficult feed everyone．The

2．________

United States is one of the lucky country because it

3．________

grows enough food for itself and still has enough to

4．________

export to another parts of the world．One reason for

5．________

this is why the United States is a large country with

6．________

different kind of climate．Most of the central part of

7．________

the country is especial fit for raising grain．Wheat

8．________

and corn are most important crops in this district．The

9．________

USA exports millions of tons of grain in every year．

10．________

What we all know, the bigger a man's muscles are, the

1．________

stronger he is．Can it be considering then that the bigger

2．________

brain a man has, the cleverer he is? The answer is not．

3．________

There're two animals that have larger brains than man：

4．________

the elephant and the whale．Yet, according his size, man's

5．________

brain is larger．Man's brain is usually weighs about three

6．________

pounds or a little more, and this is about one-forty of the

7．________

weight of his all body．The whale's body, on the other

8．________

hand, is one thousand times heavier than it's brain, while

9．________

the elephant's body is about five hundred times so heavy．

10．________

Jack London was famous American writer．He

1．________

was born in January 12^th, 1876．His family was very poor,

2．________

and he had to leave school in order for make

3．________

money．He worked hard in many different job．Later,

4．________

Jack returned back to school, but he didn't stay．He

5．________

wrote．“Life and pocketbooks was too short．”In

6．________

1897, he went to Alaska to hunt for gold．Instead of

7．________

he found ideas there for his books and stories．He

8．________

returned home but started to write．His writings were

9．________

very good, and he became rich and famous in his twenty．

10．________

　　I'll graduate from our school soon．How a great

1．________

three-year school life! I just find this really difficult

2．________

to say goodbye for the nice teachers and my dear good

3．________

friends．They are always kindly to me and I will miss

4．________

them forever．Walk around the campus, I can still see my

5．________

footsteps through the colorful school life and everything

6．________

will be carefully kept in my memory．I'm going study

7．________

harder than ever to improve your English．I believe that if

8．________

you work hard, you'll surely make a great progress．

9．________

Let's try together to make our dreams came true．

10．________