具有司呼吸作用的气是() A.元气 B.宗气 C.营气 D.卫气 E.以上均非

患者，男性，45岁，右上后牙突发搏动性疼痛，牙龈出血，发热。口腔有异味。有长期吸烟史。口腔检查显示颊侧牙龈红肿、光亮，且有波动感，有深牙周袋，牙体有叩痛和Ⅰ度松动，无明显龋蚀。

假如X线片示牙槽骨嵴吸收，牙髓活力测验正常，应采取的治疗包括（）。

A.无望保留的牙，控制急性炎症后拔牙

B.自牙周切开引流

C.抗生素治疗

D.调

E.根管治疗

F.控制急性炎症后进行去除局部刺激因素，包括洁治、刮治、根面平整等

G.控制急性炎症后进行手术治疗

操作系统是管理计算机软硬件资源、控制程序运行、改善人机界面和为应用软件提供支持的一种系统软件。下面是有关操作系统基本概念和功能的叙述： Ⅰ．处理机管理也称为进程管理 Ⅱ．进程特指应用程序的执行过程 Ⅲ．所有的操作系统均支持虚拟存储技术 Ⅳ．文件目录是文件系统实现“按名存取”的主要手段 其中错误的叙述是：( )。

A．Ⅰ和Ⅱ

B．Ⅱ和Ⅲ

C．Ⅲ和Ⅳ

D．全部

As most people know, in the past few years, sandstorms have swept across many cities and areas of North China, polluting the air and disturbing daily lives of human beings. People look dirty and suffer many kinds of illnesses, such as breath difficulty. The sandstorm is such a serious problem that it has not only undermined the industrial and agricultural development of our country but also caused a lot of trouble to the living conditions of the Chinese people. It is expected that effective(有效的) measures should be taken as soon as possible through our joint efforts to limit its occurrence.

So what should we do with the frightening sandstorms? Some experts put forward practical suggestions as follows: For one thing, more funs(基金)ought to be put into tree planting and forest protection so as to keep more water resources within the surface of the earth. For another, governments of all countries should make laws on environmental protection.For example, banning the use of throw-away chopsticks and punishing illegal tree cutting. Scientists should also study and find ways to cut down the degree of its destruction and to improve the whole environment.

How people look forward to sunny days with little breeze(微风)touching their faces now and forever! Nevertheless, I am fully confident that the golden days can come back so long as everyone tried his best to protect natural environment from today on.

小题1:The underlined word”undermined”(in Paragraph 1)means __________.

A．weakened

B．encouraged

C．kept

D．made小题2:From the first paragraph, we can infer _________.

A．China has taken no measures to prevent sandstorms.

B．sandstorms can cause much damage to human beings and their daily lives.

C．the sandstorm is the most dangerous natural disaster to human beings.

D．more sandstorms will happen in the near future in North China.小题3:How many ways do some experts put forward to fight against sandstorm?

A．5

B．4

C．3

D．2小题4:What’s the author’s attitude towards the situation to sandstorms’ problems?

A．Unconfident

B．Optimistic

C．Regretful

D．Satisfied

如果以便于拣货和库存管理为目的，那么旋转式货架的优越性是很突出的。

一次性使用无菌注射器和一次性使用输液器属于（）

A．第一类医疗器械产品

B．第二类医疗器械产品

C．第三类医疗器械产品

D．第四类医疗器械产品

E．第五类医疗器械产品