流动式起重机所使用的发动机主要是内燃机，其特点是燃料在机器内部燃烧，将热能转变为（）

下图是普通光学显微镜结构图，请据图回答问题。

（1）对物像起放大作用的结构是________。（填序号）

（2）调节光线强弱的部位是[⑥]________和[ ]反光镜。

（3）对光、放置好玻片标本后，要缓缓下降镜筒时，眼睛一定要注视[ ]__________，以防__________。

（4）用显微镜观察到的物像如果不够清晰时，应微调图中的[ ]_________。

（5）显微镜利用了凸透镜成像原理，成的是____________，因此，要想向上移动物像，应向______。

便秘与腹泻交替出现应注意（）

A.肠肿瘤

B.溃疡性结肠炎

C.肠结核

D.肠易激综合征

E.肠梗阻

下列哪些专用账户不能支取现金（）

A.基本建设基金账户

B.更新改造资金专用账户

C.政策性房地产资金专用账户

D.财政预算外资金专用账户

Mrs. White lived in a town of England. Her husband died three years ago and one of her children worked in the capital and the other three lived in another town. Her husband didn’t leave her much money and she had to live a simple (简朴) life. Sometimes her children went to see her during their holidays, but they stayed with her for only two or three days.

One winter morning the old woman got up early. She was going to buy some food in a shop. And when she came out, she found there was much snow in the street. She had to sweep it away. And suddenly she found a dying dog at the corner of the house. She picked it up and took it into the house quickly. She put it near the fire and gave it some milk and bread. At first the poor dog ate nothing and that afternoon it drank some milk and three days later it was all right. Now the old woman found it was a beautiful dog. And she liked it very much and took it everywhere she went. A week later she went shopping with her dog. At a bus stop a young man was eating fish and chips. The little dog became very excited (兴奋) at the smell of the man’s lunch and began jumping up at him.

“Do you mind if I throw it a bit (一点)?” asked the young man.

“Not at all,” answered Mrs. White.

Having heard this, he picked up the dog and threw it over the wall.

50. One of the old woman’s children worked in ______.

A. Moscow        B. Paris         C. London         D. New York

51. Mrs. White lived a simple life because ______.

A. she wasn’t rich enough          B. she hoped to save money for her children

C. she had four children            D. her children hated her

52. It was _______ that morning when Mrs. White went to buy something.

A. rainy          B. snowy        C. windy          D. cloudy

53. The old woman liked the dog very much because _______.

A. it was beautiful                B. it was little

C. she spent money on it           D. she felt lonely

54. The dog hoped ______, so it became excited.

A. to be given some food           B. to leave the bus stop soon

C. to bite (咬) the young man        D. to go as soon as possible

55. The meaning of the word “smell” in the story means ______.

A. 闻          B. 口味         C. 气味          D. 嗅觉

耶稣会学校形成了一套完备的组织管理模式，一切以1559年的《耶稣会章程》和1559年的( )这两个纲领性文件为标准和尺度。

A．《学校章程》
B．《教学大全》
C．《教学法案》 D．《教学章程》