在匀强磁场中有一个原来静止的碳14原子核，它放射出的粒子与反冲核的径迹是两个相内

装配图的规定画法其中有（）

Ⅰ．相邻零件接触面和配合面只画一条线；

Ⅱ．两相邻零件的剖面线，其方向应相反；

Ⅲ．轴、连杆等实心件，若按纵向剖切，且剖切平面通过其对称平面或轴线时，按不剖绘制。

A．Ⅰ+Ⅱ

B．Ⅰ+Ⅲ

C．Ⅱ+Ⅲ

D．Ⅰ+Ⅱ+Ⅲ

第三节完形填空(共20小题；每小题1.5分，满分30分)

James’s New Bicycle

James shook his money box again. Nothing! He carefully  26  the coins that lay on the bed. $24.52 was all that he had. The bicycle he wanted was at least $90!  27   on earth was he going to get the  28  of the money?

He knew that his friends all had bicycles. It was  29  to hang around with people when you were the only one without wheels. He thought about what he could do. There was no  30  asking his parents, for he knew they had no money to  31  .

There was only one way to get money, and that was to  32  it. He would have to find a job.  33   who would hire him and what could he do? He decided to ask Mr. Clay for advice, who usually had  34  on most things.

“Well, you can start right here,” said Mr. Clay. “My windows need cleaning and my car needs washing.”

That was the  35  of James’s odd-job(零工) business. For three months he worked every day after finishing his homework. He was amazed by the   36   of jobs that people found for him to do. He took dogs and babies for walks, cleared out cupboards, and mended books. He lost count of the  37  of cars he washed and windows he cleaned, but the   38  increased and he knew that he would soon have   39   for the bicycle he longed for.

The day   40  came when James counted his money and found $94.32. He   41  no time and went down to the shop to pick up the bicycle he wanted. He rode   42  home, hoping to show his new bicycle to his friends. It had been hard   43   for the money, but James knew that he valued his bicycle far more   44   he had bought it with his own money. He had   45  what he thought was impossible, and that was worth even more than the bicycle.

26. A. cleaned    B. covered       C. counted        D. checked

27. A. How        B. Why              C. Who             D. What

28. A. amount     B. part               C. sum               D. rest

29. A. brave       B. hard              C. smart              D. unfair

30. A. point          B. reason            C. result             D. right

31. A. cost          B. spend             C. spare             D. save

32. A. borrow      B. earn               C. raise               D. collect

33. A. Or           B. So                 C. For                D. But

34. A. decisions   B. experience      C. opinions         D. knowledge

35. A. beginning  B. introduction   C. requirement    D. opening

36. A. similarity  B. quality           C. ability            D. variety

37. A. brand       B. number           C. size               D. type

38. A. effort       B. pressure          C. money            D. trouble

39. A. all            B. enough          C. much             D. some

40. A. finally       B. immediately    C. normally         D. regularly

41. A. gave         B. left                       C. took               D. wasted

42. A. patiently    B. proudly          C. silently          D. tiredly

43. A. applying   B. asking            C. looking          D. working

44. A. since         B. if                  C. than               D. though

45. A. deserved    B. arrived           C. achieved         D. learned

首选诊断早孕的辅助检查方法是（）

A.黄体酮试验

B. * * 脱落细胞学检查

C.尿妊娠试验

D.基础体温测定

E.宫颈黏液涂片+燥后镜检

儿童的道德优点大致分为五类，即：社会道德、学习努力、独立性、（）、勤劳勤俭。

A.创造性

B.节约性

C.积极性

D.活泼性

对阻碍医师依法执业，侮辱、诽谤、威胁，殴打医师的人员进行行政处罚时，应当适用（）

A.《执业医师法》

B.《医疗机构管理条例》

C.《医疗事故处理条例》

D.《治安管理处罚条例》

E.《刑法》