56. Don’t ____(暴露)your skin to the direct sunshine.

55. Nobody can _______(预测)the future.

54. He was __________(专心)in the book.

53. What are the________(特征，特性)of the medicine？　

52. The passage mainly tells us ___.

A. why many people have two motorcycles.

B. why some young people would rather have motorcycles than cars.

C. why motorcycles are called modern horses.

D. why dirt bikes are not used in the city.

第三部分：

Ⅳ. 单词拼写：(共10小题；每小题1分，满分10分)( 有些需要改变形式 )

51. People use dirt bikes in places where ____.

A. there is too much traffic

B. there are expert riders

C. there are no cars to drive

D. it is more difficult to pass through

50. According to the passage it is more fun ____.

A. to race the dirt bike

B. to go round the cars

C. to join the motorcycle club

D. to pay to see the race

49. Motor-cross is _____.

A. a motorcycle club.

B. a dirt bike

C. a wonderful motorcycle race

D. a truck or trailer.

48. Some young people dream of owing motorcycles instead of cars because ______.

A. motorcycles are called horses of modern times.

B. motorcycles are cheaper and better in traffic.

C. They want to save gasoline whose price is gong higher and higher.

D. Both B and C

47. Which statement is not mentioned in the passage?

A. The man was married with his girlfriend at last.

B. The old man worked in a company when he was young.

C. He was sent to Edinburgh before he was going to be married.

D. He is unhappy so he threw the diamond ring into the water

(D)

Very often young people dream not of owing a car but of having a motorcycle. They know that it takes less money to buy and to operate. With a little gasoline they can ride for hours. Boys and girls with motorcycles can also get to where they want to go very fast. They do not have to stay behind cars when there is a lot of traffic. They can go around the cars.

Motorcycles are also convenient to park if there is no space on the street, people sometimes push their bikes onto the lawn to leave them beside their house.

Some people like the noise almost as much as the speed. They may also feel like their grandparents did when they rode a fast horse. The motorcycles may be called the horse of modern time.

Girls and boys may belong to a motorcycle club. The members of these clubs get together and ride to places like state parks or lakes.

Many people have two motorcycles. They use one for the city streets and the other for riding through fields. The other one is called a dirt bike. it is especially made for places where there are no roads. Because a dirt bike is not used in the city. A person must have a truck or a trailer to take it through the city streets.

It is fun to have friends who also own dirt bikes. A group often goes into country to race their bikes. If they are expert riders, they may enter a race called the Motor-cross, and people will pay to see them ride. Better still, they may win a prize.