下列哪些是主动脉瓣关闭不全的病因（） A.风湿性心脏病 B.主动脉夹层动脉瘤 C.马

阅读理解。

     Who do you admire (崇拜)? Different people may have different ideas.

      If you're a sports fan, perhaps the person you admire most is a great basketball player, and Yao Ming is

probably the one in your mind. If you study music or play an instrument, perhaps the person you admire most

is gifted musician like Mozart, who began to write beautiful music at a very young age. Or maybe you admire

great scientists, for example, Yuan Longping.

     We have many reasons to admire famous people and we often give much of our respect to them. However,

we shouldn't neglect those who are common, such as nurses, train drivers, firemen, cleaners and so on. They

may be working in a corner of the world without being noticed, but all these people spend their working days

serving the public. They show great dedication (奉献). However, what they do is often unnoticed by us. Have

you ever thought of what our life will be like if they stop working?

     So next time when you appreciate famous people, don't forget those who are common around you.

1. Yao Ming is a great _______.

A. pop singer

B. actor

C. basketball player

2. Mozart began to write _______ when he was very young.

A. music

B. letters

C. books

3. The underlined word "neglect" in Paragraph 3 means _______.

A. give comments on

B. make fun of

C. care little about

4. In Paragraph 3,the writer mainly points out _______.

A. the reasons why we admire famous people

B. the importance of common people's work

C. the places where common people are working

5. What's the main idea of this passage?

 A. Famous people are admired by most of us in our life.

B. Common people should also be given respect as the famous ones.

C. Common people should be given the most respect in our society.

某报以“新陈代谢”为题刊文：“新内阁成，旧内阁灭；新官制成，旧官制灭；新教育兴，旧教育灭；……阳历兴，阴历灭；鞠躬礼兴，拜跪礼灭……”文中所说的这些现象应当发生于

A．1898～1900

B．1901～1911

C．1912～1927

D．1928～1937

扑汗方1功效与作用

某些操作系统，将一条命令的执行结果输出给下一条命令，作为其输入并加以处理，这是系统的 (9) 机制。使命令所需要的信息不从键盘接收，而取自另一个文件，这是系统的 (10) 机制。使命令的执行结果直接引向另一个文件，而不在屏幕上显示，这是系统的 (11) 机制。操作系统不从键盘逐条接收命令并执行，而调用一个正文文件，执行其中的一系列命令，这种方式称为 (12) 方式，编写这样的文件应符合 (13) 语言的语法规则。
(9)

省级人民政府在接到突发公共卫生事件报告后，向国务院（卫生行政部门）报告的时限是
突发事件监测机构、医疗卫生机构和有关单位在发现突发公共卫生事件后，向所在地县级人民政府卫生行政主管部门报告的时限是

A.以最快速度

B.1小时

C.2小时

D.6小时

E.12小时