在磁感应强度为B的均匀磁场中，长为l的直导线以速度。切割磁力线，当v、l、B三者方向

事故现场出现有易燃易爆气体时，在切断电源不会引发爆炸的前提下，应及时切断电源，熄灭明火，停止()设备工作。

A、机器

B、高热

C、搜救

D、照明

.

Ⅲ. 完形填空

Around 5:30 p.m., I was on the bus one day and everybody on the bus was quiet. People had just   36   from work, students had just finished their last   37   and everybody was a little tired from a long day. It wasn’t a particularly good day for me     38   as I was feeling quite tired. I was just looking outside of the   39   without any specific thought in my mind. It was the same   40   I had seen many times before, people hurrying home.

In front of me, there was a guy sitting in the seat who didn’t look too clean.   41   he was looking out of the window, the guy suddenly   42   to me and pointed at something outside. “Hey, look.” He had a big smile on his face. I turned to the   43   he was pointing to and there it was ---- the beautiful Catalina mountains burning with a beautiful   44  . The mountains were coated with bright pink light and shadows. He turned to other people on the bus and told them to look at the mountains. He   45 “ Wow” and “ It’s so beautiful” again and again. Everybody on the bus   46   the views indeed.

The   47   view also helped me to end my long   48   day with a good feeling in my heart. But, more   49  , I was so inspired to see that this man wanted to   50   the beautiful view with everybody on the bus, total strangers. His   51   act made me accidentally find something that I had lost which I didn’t even know I had lost. He made me   52   that I had lost the feelings and the   53   I used to have everyday. In my daily life, many things had   54  their color and movement. But he   55   me that things are still there ---- they never get lost.

36. A. gone by               B. given up                   C. got off                      D. taken up

37. A book                    B. class                         C. lesson                       D. experiment

38. A. also                    B. too                           C. either                       D. instead

39. A. window               B. classroom                 C. mountain                  D. city

40. A. people                 B. bus                           C. trouble                     D. view

41. A. Though               B. Once                        C. If                             D. As

42. A. turned                 B. attended                    C. referred                    D. objected

43. A. finger                 B. direction                   C. driver                       D. sky

44. A. journey               B. memory                    C. sunrise                      D. sunset.

45. A. wrote                  B. followed                   C. repeated                    D. discussed

46. A. described             B. impressed                 C. enjoyed                    D. recorded

47. A. full                     B. amazing                    C. same                        D. simple

48. A. unlucky              B. worrying                  C. tiring                        D. exciting

49. A. importantly         B. naturally                   C. beautifully                D. fortunately

50. A. comment             B. connect                     C. compare                   D. share

51. A. final                   B. kind                         C. violent                      D. direct

52. A. decide                 B. believe                     C. realize                      D. learn

53. A. excitement           B. determination            C. concern                    D. puzzle

54. A. increased             B. showed                     C. lost                          D. faded

55. A. warned                B. reminded                  C. advised                     D. persuaded

下列方法中，不属于施工图预算审查方法的是( )。

A．分项详细法

B．逐项审查法

C．对比审查法

D．重点审查法

肺炎链球菌的主要致病物质是（）

A.荚膜

B.溶血酶

C.自溶酶

D.神经氨酸酶

E.菌毛

肾盂肾炎正确的治疗是（）

A.先治疗后留尿标本

B.有尿频、尿急者仍应多饮水

C.尿痛时可用APC.

D.首选药为青霉素

E.临床症状消失后即停药