潜伏梅毒，若感染期限在2年以内者称为（）；病期在2年以上者称为（）。

心电图仪（如图（1）所示）通过一系列的传感手段，可将与人心跳对应的生物电流情况记录在匀速运动的坐标纸上．医生通过心电图，可以了解到被检者心跳的情况，例如，测量相邻两波峰的时间间隔，便可计算出1min内心脏跳动的次数（即心率）．同一台心电图仪正常工作时测得待检者甲、乙的心电图分别如图（2）甲、乙所示．若医生测量时记下被检者甲的心率为75次/min．则：

（1）根据甲的心率为75次/min可知，甲每次心跳时间间隔（即甲心电图纸带相邻波峰走纸所用时间）为______s；

（2）这台心电图仪输出坐标纸的走纸速度大小为______毫米每秒．

（3）乙的心率为______次每分钟．

阅读理解。

     Rumour( 谣言 )is the most primitive way of spreading stories-by passing them on from mouth to

mouth. but civilized countries in normal times have better sources of news than rumour. They have radio,

television, and newspapers. In times of confusion ( 混乱 ), however, rumour appears and becomes

widespread. At such times the different kinds of news are in competition: the press, television, and radio

against the grapevine.

     Especially do rumours spread when war requires control on many important matters. The normal

news sources no longer give out enough information. Since the people can not learn through legal

channels all that they are anxious to learn, they pick up "news" wherever they can and when this happens,

rumour grows.

Rumours are often repeated even by those who do not believe the tales. There is an interest about them.

The reason is that the cleverly designed rumour gives expression to something  deep in the hearts of the

victims-the fears, doubts, forbidden hopes, or daydreams which they hesitate to voice directly.

Pessimistic ( 悲观的 ) rumours about defeat and disasters show that the people who repeat them are

worried and anxious .Optimistic rumours  about record  production or peace soon coming point to

self- satisfaction or confidence-and often to over- confidence.

1. The author suggests that, in times of confusion, man often __________.

A. stops regular news services

B .turns to primitive ways for support

C. distrusts his fellow man

D. loses complete control of himself

2. The underlined word "grapevine" in Paragraph 1 probably means "__________".

A. rumour  

B. newspaper

C. information  

D. time

3. The author states that during wartime the regular sources of news provide only __________ .

A. false information      

B. optimistic reports

C. limited information  

D. pessimistic reports

4. Which of the following statements is mentioned as a reason for people to repeat a rumour?

A. They are too willing to believe.        

B. They take an interest in rumour.

C. They have a strong desire to make a fool of other people.

D. They find some rumours reflect their own unexpressed beliefs.

关于肩胛上神经及其阻滞的描述，错误的是（）

A.起自臂丛锁骨上部

B.经斜方肌深面与肩胛上血管伴行

C.穿肩胛骨切迹入冈上窝

D.支配冈上、下肌

E.经肩胛骨内侧深面注药可阻滞该神经

降落漏斗

依托社区资源为离休干部提供“四就近”服务，请问四个就近是什么？