要加大对矿井防治水工作的监察力度，严格执行（）的方针。A、预测预报 B、预防为主 C、有

慢性风湿性瓣膜病常见的瓣膜损害是（）

A.二尖瓣

B.主动脉瓣

C.二尖瓣和主动脉瓣

D.三尖瓣

E.肺动脉瓣

低压二氧化碳灭火系统一般由灭火剂储存装置、总控阀、驱动器、喷头、管道超压泄放装置、信号反馈装置、控制器等部件组成。其中，灭火剂储存装置由灭火剂储存容器、检修阀、充装阀、平衡阀、安全阀、容器超压泄压阀、压力控制显示装置、()、灭火剂量显示装置等组成。

（A）储气瓶组

（B）泵组

（C）制冷系统

（D）雨淋阀

甲与乙有仇，某日甲发现乙晚上到邻村去看露天电影，就携带一枚手榴弹尾随乙到了邻村，在乙看电影时，甲引爆了手榴弹，结果乙被炸死，在边上多名看电影的群众也被炸死炸伤。的行为构成（）。

A.爆炸罪

B.危险物品肇事罪

C.故意杀人罪

D.报复陷害罪

厦门大学一名女博士随校方组织的博士团到闽北山区的原国家级贫困县政和县调研有关生态与经济发展的课题，三天的调研结束后，这位女博士在微博上狂言毕业后死都不下基层。由于女博士高学历的特殊身份，一时激起网民的普遍非议。你怎么看？

阅读理解

     On the first day of my new high school,I almost had a nervous breakdown. Everything about the

school seemed so difficult. When I got home, my parents said, "You're nervous and that's okay.

Everyone is afraid of high school." I denied it. I wanted to be strong, so I refused to let anyone know

about my fear,even my closest friends.

     On the first day I was late for every class and was constantly lost. The school seemed like a puzzle

that I couldn't figure out. Was this how the whole year was going to be? I didn't think I could rise to this

challenge, especially carrying a huge backpack that I could hardly lift. It was so big that I could knock

someone out with it! The schoolmates seemed to regard me as a fool, and they were probably right.

     Despite my fears, after the first week I finally had my schedule figured out. With the exception of

falling up and down the stairs a couple of times and getting laughed at,high school was turning out to be

not so bad. It was actually much better than middle school and much more challenging.

Since then,I've been elected vice monitor of my class,which wasn't much of a victory since only three

people ran for the four positions.

     It is normal to be scared about a new school. Take a deep breath and relax. High school is

something that any student can overcome. Make sure you participate in some outofclass activities

because you'll find it easier to make friends. Try to do your best, even if it isn't straight A's.

     Most important of all, be who you are, whether you're a "fool", an athlete, or a lower grader. Don't

try to pretend to be someone you're not. Now you know the true secrets of high school.

1. The main reason for the author's fear on his first day is that ________.

A. he was unable to work out the puzzle

B. his schoolmates were unfriendly to him

C. he was not familiar with the new surroundings

D. his schoolbag was too heavy for him to carry

2. From the author's first day experience we can infer that ____.

A. his home was far from the school

B. he got to school after classes began

C. he didn't get any school schedule

D. he didn't know the right way to class

3. After his first week at school,the author ________.

A. was still not accustomed to the schedule

B. gradually adjusted himself to the new school

C. found high school not so challenging as he had imagined

D. ran for monitor of his class against three other students

4. According to the passage,the secret of the author's success lies mainly in ________.

A. making more friends

B. getting more A's at school

C. being who he really is

D. joining in outofclass activities