问题 单项选择题 B型题

在磁共振基本原理中,“停止射频脉冲,纵向磁化逐渐恢复至原磁化量的63%,所需时间”称为()

A.弛豫

B.纵向磁化

C.横向磁化

D.纵向弛豫时间(T1

E.横向弛豫时间(T2

答案

参考答案:D

完形填空

第二节:完成句子(共10小题;每小题1.5分,满分15分)

31. Another colleague who is known to have stolen things in the past ________________(怀疑) having stolen the camera. (suspect)

32. __________________ (无论怎么努力) you try, working towards a career for which you are  not suitable is not going to get you there. (matter)

33. —Professor Crown, I attended your lecture on ecology at Berlin University last year. It was  wonderful!

—Thank you. But it __________________(一定是) more than two years ago, I think. (must)

34. _________________(据报到) 99% of school-age children in China attended primary school  by 2004. (report, that)

35. In areas _____________________ (农业起着重要作用), people do not attach importance to  education. (play)

36. Ebbinghaus carried out one of the earliest studies of human memory, _____________ (导致)  the “Ebbinghaus Forgetting Curve”. (result)

37. Many detective stories are set in a situation __________________________ (在此情况下偷盗行为一定是某人干的) by one of the people around. (theft, commit)

38. It was evident that the __________________(现行体制) of using small groups of detectives and calling on the army for bigger problems was no longer working. (exist)

39. The old couple set up a fund __________________(旨在于) helping those who can’t afford    to go to college only for lacking of money. (aim)

40. _________________ (练完了) her violin, the girl began to help her mother to set up a blog  on Internet. (finish, practise)

单项选择题 A1/A2型题