问题 单项选择题

关于T1值,错误的是

A.当B1终止后,纵向磁化向量逐渐恢复至RF作用前的状态,这个过程叫纵向弛豫,所需时间为纵向弛豫时间或T1时间
B.使纵向弛豫恢复到与激发前完全一样的时间很长,有时是一个无穷数
C.把纵向弛豫恢复到63%时,所需要的时间为一个单位T1时间,称T1
D.T1反映组织纵向弛豫快或慢的物理指标
E.人体各种组织组成成分不同而有不同的T1

答案

参考答案:B

阅读理解

Diego Maradona acknowledged(承认) that he struck the ball with his hand in the famous “Hand of God “ goal against England in the 1986 World Cup quarterfinals.

Maradona appeared to hit the ball with his hand into the net, and officials allowed the goal to stand despite protests by the English team. Argentina went on to win the 1986 quarterfinal match 2-1 and then win the World Cup.

In his most detailed comments yet, Maradona said he was unable to reach the ball for a header(头球) when he went up against the taller English goalkeeper, Peter Shilton.

After the score, Maradona said he quickly realized the line referee(裁判) had allowed the goal but none of themselves were figuring the goal would be effective.

“I was waiting for my teammates to hug me and no one came,” said Maradona, who was the team captain. “I told them, ‘Come and hug me or the referee isn’t going to allow it.’”

In his 20-year career before retiring in 1997, Maradona starred at Argentinas Juniors and Boca Juniors and in Europe. He also led Argentina league titles(冠军).

In 1991, Maradona failed a drug test and was banned for 15 months. Nine years later, FiFA chose him and Pele as the best players in soccer history.

Recently, he was appointed vice president of Boca Juniors. And with his new TV show, Maradona, 45, has returned to public eyes after years of dealing with drug and health problems.

小题1:This passage comes from ________.

A a report of some newspaper.              B Maradona’s autobiography

C statement of an official                  D an interview with Maradona’s teammates

小题2:Maradona was chosen as one of the best players in soccer history in ____.

A 1986          B 1997         C 2000         D 2001

小题3:The underlined word “figuring” is closest in meaning to ____.

A pretending    B thinking      C hoping       D celebrating

小题4:Which of the following is NOT true according to the passage?

A Striking the ball with one’s hand into the net is effective.

B Maradona didn’t pass a drug test.

C Maradona won the 1986 World Cup.

D Maradona retired in 1997.

小题5:We can learn the following from the passage EXCEPT THAT ___.

A Maradona was once a drug taker.

B Maradona had planned to head the ball but failed.

C his teammates rushed to congratulate him after Maradona had shot the goal.

D Maradona once had some health problems.

单项选择题 A1/A2型题