Every object has weight. But the center of its weight is not always in the middle of the object. If the top of an object is heavier than its bottom, it will fall over easily. We say that its center of gravity is high. But if the bottom is heavier, it won’t fall easily. Then we say that its center of gravity is low.

Look at the first picture. This empty box must fall over, because its center of gravity (C) is not above the line of its bottom (AB).

Now look at the second picture. There is some heavy iron in the bottom of this box. It will not fall, because its center of gravity is above its bottom.

1.If the bottom of an object is ______ its top, it will fall over easily.

A. lighter than　　 B. heavier than　　 C. no heavier than　　  D. as heavy as

2.Please point out which box will not fall.

3.The main idea of the passage is _________.

A. why things fall over　　　　         B. a low center of gravity

C. a high center of gravity　　             D. that everything has weight

 

 

	News 1 Huang Heshan, a boy from Xinghua, has moved(感动) many people in Taizhou. Thanks to Huang Heshan, Yang Kangshao can go to school every day. Yang is disabled, but Huang Heshan carries him to school on his back. It’s eight years since he started to do that. They help each other. At school, Yang helps Huang with his study, too. Huang says that he feels happy when he can do something to help disabled people.
	News 2     In Taizhou City, Ren Min Park is a good place for families to have fun. There are many green trees and the air is fresh. People can have different activities in the park. However, we can also find the waste bags and other rubbish everywhere. How can we get such bad environment? Now it’s time to keep the park clean if we want to have a nice field trip.
	News 3     On March 25, more than four thousand people started to run from Jiangsu Taizhou Middle School. All the runners ran about 4.7 kilometers. They took part in the activity to lead a healthy life and show the spirit of the people in Taizhou. After running, many runners signed their names on the wall.

1.In News 1, we know Huang Heshan has helped Yang Kangshao for _____.

    A. eighteen years       B. eighty years C. eight months 　　D. eight years

2.We should _____ if we want to have a nice field trip in Ren Min Park.

A. throw the rubbish                　　B. find some waste bags

C. plant more trees             　　　　D. help keep the environment clean

3.To lead a healthy life, over four thousand people _____ on March 25.

A. cleaned the park             　　　　B. signed their names on the wall

C. ran about 4.7 kilometers     　　　　D. started to help disabled people

4.According to the news, we can know something happened in _____.

     A. Beijing     　B. Taizhou        　　C. Guangzhou        D. Shanghai

5.We may know the news above from _____.

     A. a newspaper 　B. a book     　　C. a magazine   　　D. a poster

 

 

Mr. King works in a shop and drives a car for the manager. He drives carefully and can keep calm when   16   danger. And he escaped from several accidents. The manager   17   him more and the traffic policemen often speaks highly of him.

Mr. Baker，one of his friends，works in a factory outside the city. It’s far from his house and he has to go to work by bus. As the street is   18   in the morning, sometimes he’s late for the work. His manager warns the young man that he will be sent away   19   he gets to his office on time. He hopes to buy a car，but he hasn’t enough   20  . He decides to buy an old one. One day, he went to the second-hand market and at last he chose a beautiful but cheap car. He said he wanted to try the car，the seller agreed. He   21   Mr King and asked him to help him at once.

Mr. King examined(检查) the car and then drove it away. It was early in the morning and there were few cars in the street. At first he drove slowly and it   22   well. Then he drove fast. And when he reached a crossing，the lights turned   23  . He tried to stop it， but he failed and   24   hit an old woman who was crossing the street. A policeman told him to stop，but the car went on until it hit a big tree by the road.

“Didn’t you hear me？” the policeman asked angrily.

　　“Yes, I did，sir,” said Mr King，“   25   it doesn’t listen to me，can it obey（听从）you？”

1.A. looking        B. reaching     C. facing           D. getting

2.A. gives              B. pays         C. needs        D. believes

3.A. crowded        B. quiet        C. empty        D. full

4.A. until          B. unless           C. when         D. if

5.A. time           B. experience  C. friends          D. money

6.A. called         B. found        C. visited          D. invited

7.A. looked         B. traveled         C. seemed       D. worked

8.A. red                B. green            C. up               D. out

9.A. hardly         B. heavily          C. nearly           D. mostly

10.A. Although     B. Since            C. While        D. For

 

--- Excuse me, could you tell me how ______ to Beijing Zoo?

　　--- Well, you may take Bus No.27.

　A. get     B. gets     C. getting     D. to get

 

People of Burlington are being disturbed by the sound of bells. Four students from Burlington College of Higher Education are in the bell tower of the church and have made up their minds to    15   the bells nonstop for two weeks as a protest（抗议） against heavy trucks which run    16   through the narrow High Street.“They not only make it    17   to sleep at night, but they are doing damage（损害） to our houses and shops of historical   18  ,”

said John Norris, one of the protesters.

“ 19  we must have these noisy trucks on the roads,” said Jean Lacey, a biology student, “why don’t they build a new road that goes round the town? Burlington isn’t much more than a  20    village. Its streets were never meant for heavy traffic”.

　　Harry Fields also studying    21    said they wanted to make as much noise as possible to force the government officials to realize what everybody was having to stand. “Most of them don’t live here anyway,” he said, “they come in for meetings and the Town Hall is soundproof（隔音的）, so they probably don’t    22   . It’s high time they realized the problem.” The fourth student, Liza Vernum, said she thought the public were mostly on their side, and even if they weren’t they soon would be.

　　I asked if they were    23    that the police might come to stop them.

　　“Not really,” she said, “actually we are suitable bellringers. I mean we are assistant bellringers for the church. There is no    24    against practising.”

I left the church with the sound of the bells ringing in my ears.

1.	A．change B．repair C．ring D．shake

 

2.	A．now and then B．day and night　　 C．up and down D．over and over

 

3.	A．terrible B．difficult　　 C．uncomfortable D．unpleasant

 

4.	A．scene B．period C．interest D．sense

 

5.	A．If B．Although C．When D．Unless

 

6.	A．pretty B．quiet C．large D．modern

 

7.	A．well B．hard C．biology D．education

 

8.	A．notice B．mention C．fear D．control

 

9.	A．surprised B．afraid C．pleased D．grateful

 

10.	A．point B．cause C．need D．law