问题 单项选择题

下列有关室外给水管道对口和调直稳固的说法不正确的是( )。

A.下至沟底的铸铁管在对口时,可将管子插口稍稍抬起,然后用撬棍在另一端用力将管子插口推入承口,再用撬棍将管子校正,使承插间隙均匀,并保持直线,管子两侧用土固定
B.遇有需要安装阀门处,应将甲乙短管与管子连接后再与阀门连接
C.管子铺设并调直后,除接口外应及时覆土
D.稳管时,每根管子必须仔细对准中心线,接口的转角应符合规范要求

答案

参考答案:B

单项选择题
阅读理解

His first successful fight was for the equal rights of black people in South Africa. Then, as the first black president, he fought to unite the country and organize the government. Now Nelson Mandela has set his sights on a new enemy, AIDS.

On March 19 the 82-year-old, former president, hosted his second AIDS-awareness concert. He warned that 25 million people in Africa were already infected with the fatal disease.

Mandela was born in a small village in South Africa in 1918. He was adopted by the chief of his tribe and could have been a chief himself and lived a happy country life.

But he refused to be a chief when his people lived under racial discrimination(歧视). He decided to fight for equal rights for all the people in South Africa. Before 1990, under the country’s Racial Segregation Law, colored and white people lived separately. Black people were treated unfairly even when taking a bus. Blacks had to stand at the back of the bus to make room for white people even when there were only a few of them on board.

For his opposition to the system, Mandela was arrested and spent 27 years in prison. He was freed in 1990 and became the president of the country after the first election were held in which everyone could vote.

Mandela was not only a political fighter who attacked with speeches. He was also a trained boxer and fought in the ring when he was young.

“Although I did not enjoy the violence of boxing, I was interested in how one moved one’s body to protect oneself, how one used a strategy both to attack and retreat”, he wrote in his autobiography.

As a skillful fighter, he chose music as his weapon against AIDS. He hopes to win another victory against AIDS.

小题1:When was Mandela arrested? 

A.In 1963

B.In 1990

C.When he refused to be a chief

D.When he became the president小题2:Nelson Mandela succeeded in doing the following except _______.     

A.winning the equal rights for the black people in South Africa

B.Uniting South Africa

C.organizing a government in South Africa

D.controlling the spread of AIDS小题3:If Nelson Mandela hadn’t fought against racial discrimination, he_______. 

A.could have been the president of South Africa

B.could still have lived a happy life

C.could have been in a difficult situation

D.would have been an excellent boxer小题4:Which of the following statements can best describe the life of Nelson Mandela?

A.struggle is his life

B.sports make his fame

C.fight for equal rights

D.a great fighter against government.