高分化黏液表皮样癌的病理特点是（） A.中间细胞多 B.黏液细胞占50%以上 C.表

针灸治疗呕吐应取的主穴为（）。

A.上脘

B.内关

C.胃俞

D.中脘

E.足三里

关于精神分裂症的紧张型，下列哪种说法不正确

A．常急性发病

B．可表现为精神运动性兴奋

C．可出现木僵

D．对电抽搐治疗反应较好

E．发病多在中老年期

从1，2，3，4，5，6，7中任取2个数字，分别作为一个分数的分子和分母，则在所得分数中不相同的最简单真分数一共有多少个？

A.14 

B.17 

C.18 

D.21

阅读理解。

                                                                      Stop Spam

     When I first got an e-mail account ten years ago, I received communications only from family, friends,

and colleagues. Now it seems that every time I check my e-mail, I have an endless series of advertisements

and other correspondence that do not interest me at all. If we want e-mail to continue to be useful, we need

specific laws that make spamming (发送垃圾邮件) a crime.

     If lawmakers do not do something soon to prohibit spam, the problem will certainly get much worse.

Computer programs allow spammers to send hundreds of millions of e-mails almost instantly. As more and

more advertisers turn to spam to sell their products, individual (个人的) e-mail boxes are often flooded with

spam e-mails. Would people continue to use e-mail if they had to deal with an annoying amount of spam each

time?

     This problem is troubling for individuals and companies as well. Many spam e-mails contain computer

viruses that can shut down the entire network of a company. Companies rely on e-mail for their employees to

communicate with each other. Spam frequently causes failures in their local communications networks, and

their employees are thus unable to communicate effectively. Such a situation results in a loss of productivity

and requires companies to repeatedly repair their networks. These computer problems raise production costs

of companies, which are, in the end, passes on to the consumer.

     For these reasons, I believe that lawmakers need to legislate (立法) against spam. Spammers should be

fined, and perhaps sent to prison if they continue to disturb people. E-mail is a tool which helps people all over

the world to communicate conveniently, but spam is destroying this convenience.

1. What does the underlined word "correspondence" in the Paragraph 1 probably mean? 

A. messages

B. ideas

C. connections

D. programs

2. According to the text, what is the major cause of the flooding spam?

A. Companies rely on e-mail for communications.

B. More people in the world communicate by e-mail.

C. Many computer viruses contain spam e-mail.

D. More advertisers begin to promote sales through spam.

3. According to Paragraph 3, who is the final victim of spam?

A. The business

B. The advertiser

C. The employee

D. The consumer

4. What is the purpose of the text?

A. To inform

B. To educate

C. To persuade

D. To instruct

某工程局某公司机械加工队，承接某电站部分塔吊安装工程，由武某负责具体安装指挥。×月×日上午，10号塔吊的前后臂和配重块以及主要部件已基本安装完毕。塔吊回转以上部分未与塔身连接，靠爬身套架支撑，塔吊处于顶升准备状态。为安装平台围栏接板，武某违反塔吊不准斜吊的规定，叫起重工王某的弟弟指挥用配合安装的9号塔吊牵引10号塔吊前臂转动，致使10号塔吊套架处弯折，向南倒塌。拴在前臂上的9号塔吊钢丝绳被拉断。站在前臂端的起重工王某随前臂倒塌被砸死，平台上的电气技术员索某被摔死，塔基南面的起重工杜某被配重块压死，路过现场的职工方某被砸断腿，正在塔上安装的工人胡某等4人随塔吊倒下受轻伤，九号塔吊司机田某因钢丝绳被拉断而受伤，直接经济损失76万余元。
事故发生后，有关专家对事故原因进行了分析鉴定，10号塔吊倒塌的原因是：
(1)安装塔吊上部时，旋转台只安放在塔身标准节上端，没有把上下两端的销钉孔用销钉锁住固定，塔吊处于极不稳定状态，为事故埋下了隐患。
(2)塔吊前臂长29m，只伸出17.9m，臂重9.8t，塔吊后臂长7.5m，管重6t，加上配重22.5t，共28.5t。前后臂不平衡，产生了后倾力。
(3)塔吊处于准备顶升状态，上下部分没有用销钉连接紧，在这种情况下，塔吊只能承受压力，不能承受拉力，用9号塔吊(在上)拉10号塔吊前臂(在下)，必然产生3个力：向上的拉力使之增加后倾；作用于塔身的推力；旋转力使后臂往外套架危险的开口处扭转。在这3个力的作用下，塔吊迅速向南弯折倒塌。这是由于安装的程序不对，改变了塔吊的受力状态而发生倒塌，而不是塔吊本身的质量不好而引起倒塌。‘(4)按照塔吊安装规定，当顶升套架被升起或正在升起时，严禁回转塔臂，严禁移动变帽小车，严禁起落吊钩。但武某在塔吊回转上部分，安装在套架上，未与塔身标准节相连接，处于顶升状态时，违章指挥操作，同意王某指挥塔臂转动，以致酿成3死7伤的重大伤亡事故。武某对此负有直接的责任。
经人民法院审理，武某的行为触犯《中华人民共和国刑法》第一百一十四条的规定，构成重大责任事故罪。鉴于案发后武某能主动承担责任，有悔罪表现，某县人民法院以重大责任事故罪判处武某有期徒刑2年，缓刑2年。
根据以上内容回答下列问题(共22分)：

按照《企业职工伤亡事故调查分析规则》中的规定，如何进行事故调查取证