煤的坚固性系数f≤3可采用放顶煤开采。

阅读理解。

    Jenny and Henry were born on the same day and they look the same. Their father has a taxi (出租车) and

he is busy all the time. He goes out early in the morning but comes back when his children go to bed. He gets

a lot of money, but he has no time to concern them with their studies.

    The two children study in the same class. Jenny works hard at her lessons, but her brother doesn't like

studying. He only likes playing. He is not good at writing compositions (作文). 

    One day Mrs. Cook tells her class to write a composition "My Mother". After supper Jenny finishes writing

in her exercise book and then goes to help her mother do some housework. But Henry goes to play football.

When night falls (降临), he comes back to watch TV. Then he remembers (记得) the composition. But he

doesn't know how to write it. He thinks hard and at last he finds a way. He copies (抄写) Jenny's composition.

    Two days later, Mr Cook asks Henry, "Can you tell me why yours is the same as Jenny's?"

    "Yes, I can, Madam," answers Henry. "We have the same mother."

1. Jenny's father can't concern them with their studies because            . [ ]

A. he doesn't like them

B. he is very busy

C. he is a taxi driver

D. he only wants more (更多的) money

2. The underlined (划线的) word "concern" in the story means (意思是)            . [ ]

A. 涉及

B. 关系

C. 当然

D. 关心

3. Henry isn't good at writing composition because            . [ ]

A. he doesn't like studying

B. he likes listening to music

C. he isn't clever

D. he's too young to do it

4. What does Jenny do after she finishes the composition? [ ]

A. Go shopping.

B. Watch TV.

C. Do housework.

D. Go to bad.

5. Henry copies Jenny's composition because            . [ ]

A. he plays football after supper

B. he forgets (忘记) to write it before he goes to bed

C. he doesn't know how to write it

D. they have the same mother

并购重组委委员有下列( )情形之一的，中国证监会应当予以解聘。

A．应当执行审核回避制度而未回避的

B．未按照中国证监会的规定勤勉尽职的

C．违反法律、行政法规、规章和并购重组委审核工作纪律的

D．两次以上无故不出席并购重组委会议的

患者女，68岁，身高158cm，体重70kg。因腹痛、发热、巩膜黄染3天，嗜睡、低血压7小时，以急性梗阻性化脓性胆管炎急诊手术。10年前有胆囊切除史。无胸闷、气促等病史，无其他系统病史。查体：体温39℃，BP106／60mmHg、HR125次／分、RR24次／分。巩膜黄染，神志模糊，心肺听诊体检无明显异常发现，腹胀。胸片：两肺纹理增多。ECG示：窦性心动过速，ST-T改变、电轴左偏。

患者出现休克的类型可能包括（）

A.失血性休克

B.低血容量性休克

C.感染性休克

D.心源性休克

E.过敏性休克

F.神经源性休克

简述原发性肝癌的治疗原则。

引起垂体瘤短期内迅速增大的最常见原因是（）

A.恶性程度高

B.肿瘤囊性交

C.瘤卒中

D.侵犯颈内动脉

E.合并其他肿瘤