头穴中，顶中线主治下列哪类疾病：A．失语 B．癫痫、精神失常 C．皮层性视力障碍、白

曲线上股的鱼鳞伤纵向倾斜角一般为14°～20°。

.在“探究平面镜成像的特点”实验中,许可同学用玻璃板、相同的两个棋子A及B、刻度尺、橡皮泥、白纸等器材进行实验，如图所示．

(1)实验时玻璃板应该__________放置在水平桌面上；

(2)实验器材选择相同的两个棋子A、B，其目的是为了

_______________________________            ；

(3)用玻璃板代替平面镜，主要是利用玻璃板透明的特点，

便于                                         ；

(4)实验中使用刻度尺，是为了测量                         ；

(5)若移去棋子B，并在其所在位置上放一光屏，则光屏上________（填“能”或“不能”）接收到棋子的像，这说明_______            _．

(6)若在实验时，看不清棋子的像，请你帮他想个办法看清棋子的像：                   。

(7)小明在实验过程中,让玻璃板沿00’轴方向(玻璃板与桌面的接触部分)水平向右移动,结果他发现镜中的像相对于A_______移动(选填“向右”、“向左”或“不”)；他又将玻璃板绕00’轴转向自己，发现镜中的像_________(选填“转向自己”、“转离自己”或“不动”)．

90°射频脉冲激发后，组织中将产生宏观横向磁化矢量，射频脉冲关闭后，由于主磁场的不均匀造成了质子群失相位，组织中的宏观横向磁化矢量逐渐衰减。到TE/2时刻，施加一个180°聚相脉冲，质子群逐渐聚相位，组织中宏观横向磁化矢量逐渐增大；到了TE时刻，质子群得以最大程度聚相位，组织中宏观横向磁化矢量达到最大值，从此时刻开始，质子群又逐渐失相位，组织中的横向宏观磁化矢量又逐渐衰减。

下列叙述正确的是（）

A.这是翻转恢复序列

B.所产生的回波称为自旋回波

C.TE称为翻转时间

D.相位发散时MR信号强

E.MR信号来自纵向磁化

第二节完形填空（共20小题；每小题1.5分，满分30分）

Wishing to encourage her young son’s progress on the piano, a mother took her boy to a famous concert. After they were seated, the mother  36    a friend and walked over to greet her. Seizing the  37  to explore the wonders of the concert hall, the little boy got up and explored his way 38   a door marked “NO ADMITTANCE（禁止进入）”. When the lights became less bright and the concert was about to begin, the mother returned to her  39    and discovered that the child was missing.

Suddenly, the curtains  40  and the lights focused on the stage. In horror, the mother saw her little boy sitting at the keyboard,   41  Twinkle, Twinkle, Little Star.

At that moment, the great piano master, Paderewski,  42  on the stage, quickly went to the piano and  43  in the boy’s ear, “Don’t  44  . Keep playing.”

Then, leaning(倾斜) over, Paderewski reached down with his left hand and began  45  in a bass (低音的) part. Soon his right arm reached  46  to the other side of the child and he added a beautiful piece of music.  47  , the old master and the boy  48   a frightening situation into a wonderfully creative  49 

That’s the way it is in life.  50  we can complete on our own is  51  noteworthy(值得注目的). We try our best, but the 52  aren’t exactly graceful or flowing music.  53  when we put our trust in the hands of greater power, our life can be truly beautiful.

The next time you set  54  to create great performances, listen carefully. You can hear the  55  of the master whispering in your ear, “Don’t quit. Keep playing.”

36. A. made           B. saw               C. looked           D. called

37. A. chance     B. performance   C. piano       D. lesson

38. A. over            B. above        C. across       D. through

39. A. stage           B. seat              C. room       D. table

40. A. parted          B. drew        C. pulled      D. pushed

41. A. singing     B. knocking      C. playing      D. creating

42. A. stood           B. appeared     C. sat         D. fell

43. A. shouted     B. cried        C. whispered    D. looked

44. A. perform          B. stop             C. leave       D. run

45. A. filling          B. getting       C. breaking      D. taking

46. A. forwards      B. down       C. up          D. around

47. A. Separately  B. Together       C. Luckily     D. Hurriedly

48. A. made           B. became        C. changed           D. grew

49. A. experience  B. play          C. concert      D. film

50. A. What           B. That          C. Which      D. When

51. A. hard            B. hardly        C. always      D. usually

52. A. failures     B. successes     C. causes       D. results

53. A. So           B. And         C. But          D. Though

54. A. down           B. about       C. away        D. out

55. A. sound          B. noise        C. voice        D. song

该图是某区域某时地面天气简略。读图回答下列小题。

产生图示区域降水的天气系统是（）

A.气旋

B.反气旋

C.暖锋

D.冷锋