问题 选择题

电阻R1与R2并联接在电路中时,通过它们的电流之比为2∶ 1,则将它们改成串联之后,下述正确的是 [ ]

A.R1与R2的电流之比为1∶2

B.R1与R2的电压之比为1∶2

C.R1与R2的电功率之比为1∶4

D.R1与R2的电压之比为2∶1

答案

B

阅读理解

Jackie Chan was born on April 7, 1954, in Hong Kong, China. His parents left mainland China for Hong Kong a short time before he was born. His parents named him “Chan Kong-sang”, which means “born in Hong Kong”. They wanted to celebrate a safe trip to Hong Kong.

At first, Jackie’s family lived in the French Embassy(大使馆).His father was a cook, and his mother was a housekeeper. When Jackie was seven years old, his family moved to Australia. His father got a job in the American Embassy. Later, back in Hong Kong, Jackie’s father sent him to the China Drama Academy. Jackie studied and worked 19 hours a day. The students practiced Kong Fu and learned how to do many stunts(特技表演)there.

When Jackie was 17, he began to do dangerous stunts for films. In the early 1980s, Jackie went to Hollywood, but he wasn’t very successful. He went on to make films in Hong Kong and had great success.Finally,in 1995,Jackie Chan became famous in the United States.Today,Jackie Chan has both Chinese and American fans and his films make millions of dollars. 

小题1:When did Jackie Chan’s parents move to Hong Kong?

A. They moved to Hong Kong a short time after Jackie Chan was born.

B. They moved to Hong Kong a short time before Jackie Chan was born.

C. They moved to Hong Kong after they came back from America.

小题2:What did Jackie Chan learn in the China Drama Academy?

A. Dramas        B. Dancing        C. Kong Fu and stunts

小题3:Which is true according to the passage?

A. Jackie Chan is about forty years old.

B. He wasn’t very successful when he first went to Hollywood.

C. He became famous at the age of 17.

小题4:From the passage we know that_________.

A. neither his American fans nor his Chinese fans like his films.

B. everybody in the world likes his films very much

C. his films are popular not only in China but also in America

小题5:We can learn from the article that _____.

A. Jackie Chan’s mother was also born in Hong Kong .

B. At first, Jackie’s family lived in France.

C. the time when his family moved to Australia was around 1961.

选择题