简述假结核耶尔森菌特征及对实验动物的危害。

阅读理解

      Imagine this: a television screen has the size and thickness of a piece of paper. You carry it around in

your pocket and take it out when you want to watch a show. Imagine a guitar so tiny that you can't see it

with the human eye, but you can hear sound when its strings are pulled.

      Nanotechnology (纲米技术)  is the science that deals with doing things in a very small way, and it is

being studied and developed all over the world. Many scientists say nanotechnology will produce the next

industrial revolution (工业革命) .

      Perhaps nanotechnology will have the biggest influence on medical science. Imagine manobots (纲米机器人) in medicine. Thousands or even millions of tiny machines can be sent into the human body with

specific tasks. For example, they can be designed to find and destroy cancer cells or viruses (病毒). Other machines may stay in the human body for ever to help organs (器官) that are not working properly.

      When could all of these happen? Scientists predict that most of these are possible in the next 30 years. Thousands of scientists around the world are working on these micro - machines.  Nanotechnology is just around the corner.

1. The two examples in Paragraph l are used to __________            

A. introduce the smallest television            

B. introduce a new kind of guitar            

C. introduce the topic of the passage

2. Nanotechnology ___________            

A. will cause an industrial revolution            

B. deals with things in old ways            

C. has studied the whole world

3. The underlined word "they" in the third paragraph refers to (指代)________            

A. scientists          

B. human bodies            

C. tiny machines

4. The tiny machines _____________          

A. are too small to be repaired            

B. can be put in a human body to kill viruses            

C. may not work well in a human body

5. The underlined phrase "around the corner" in the last sentence means"_________"          

A. far away  

B. at present      

C. in the near future

下面标点符号使用不恰当的一项[ ]

A．爸爸的同事们称我“小广东，”也有的叫我“亚非拉，”那是因为我皮肤黑的缘故。

B．儿子很兴奋地拥入我的怀抱，又拥入妻的怀抱，欢呼：“小龟找到爸爸妈妈啦——”

C．在日常生活中，我们待人要诚实，不说假话，不说空话；写作，也要诚实，不说假话，不说空话。

D．学会观察是很重要的，因为文章是客观事物（包括思想感情）的反映。

男性，68岁，反复咳喘20余年，加重4天，嗜睡1天来院。查体：嗜睡，球结膜水肿，皮肤湿暖红润，口唇发绀，BP170/90mmHg（22.7/12kPa），R30次/分，脉搏118次/分，双肺可闻干湿性啰音，双侧腱反射减弱，双下肢可凹性水肿。

对此患者应进行以下治疗，除了（）

A.积极抗感染治疗

B.持续低流量吸氧

C.建立通畅气道

D.尽早使用利尿剂，减轻水肿

E.应用支气管扩张药物

有以下说明和定义语句 struct student { int age；char num[8]；struct student stu[3]={{20,"200401"},{21,"200402"},{19,"200403"}}；struct student *p=stu;}; 以下选项中引用结构体变量成员的表达式错误的是

A．(p++)-＞num

B．p-＞num

C．(*．num

D．stu[3]．age

在软件生命周期中，能准确确定软件系统必须做什么和必须具备哪些功能的阶段是

A．概要设计

B．详细设计

C．可行性分析

D．需求分析