《金匮要略》暍病临床所见恶寒症状系阳明里热过甚，汗出过多而腠理空虚，阳气不足所致。

人们可以对物质从不同的角度进行分类．现将食盐水、氢气、水、二氧化碳、铝、空气等六种物质分成三组，请根据标示填写下列空格．

第一组：H₂、Al，分类依据是______．

第二组：______，分类依据是都属于氧化物．

第三组：______，分类依据是______．

（）主要是指由于信息科技部门或者服务供应商提供的计算机系统或设备发生故障或其他原因，不能正常提供部分、全部服务或业务中断而造成的损失。

A．操作风险

B．系统缺陷

C．内部流程

D．人员因素

如图所示，在同一竖直面内，小球a、b从高度不同的两点(h_a>h_b)分别以初速度v_a和v_b沿水平方向抛出，经过时间t_a和t_b后落到与两抛出点水平距离相等的P点．若不计空气阻力，下列关系式正确的是

[ ]

A．t_a>t_b，v_a<v_b  

B．t_a>t_b，v_a>v_b

C．t_a<t_b，v_a<v_b  

D．t_a<t_b，v_a>v_b

女性，27岁，G2P1，停经60天， * * 流血10余天。尿妊娠试验阳性。

初产妇，25岁，孕39周。枕后位阵发性腹痛8小时，宫缩10分钟持续30秒。宫口开大2cm此时（）

A.人工破膜

B.肌注麦角

C.静滴缩宫素

D.哌替啶50mg

E.剖宫产手术

(三)

When you are in another country, it is important to know the language, but it is equally important to know how to communicate nonverbally, before saying anything by making gestures. According to a pioneer in nonverbal communication, only 20 to 35 percent of our communication is verbal. When people don’t know the language, the" most common way to communicate is through gestures. However, many gestures have different meanings, or no meaning at all in different parts of the world.
In the United States, for example, nodding your head up and down means "yes". In some parts of Greece and Turkey, however, this motion can mean "no”. In Southeast Asia, nodding your head is a polite way of saying "I’ve heard you".
"In ancient Rome, when the emperor wanted to spare someone’s life, he would put his thumb up. Today in the United States, when someone puts his/her thumb up, it means "Everything is all right". However, in Sardinia and Greece, the gesture is insulting and should not be used there.
In the United States, raising your clasped hands above your head means "I’m the champion" or "I’m the winner". It is the sign prizefighters make when they win a fight. When a leading Russian statesman made this gesture after a White House meeting, Americans misunderstood and thought he meant he was a winner. In Russia, however, it is a sign of friendship.
In the United States, holding your hand up with the thumb and index finger in a circle and the other three fingers spread out means "Everything is OK" and is frequently used by astronauts and politicians. In France and Belgium, it can mean "You’re worth nothing. "
There are other nonverbal signals that people should be aware of when they go to another country, such as the distance to maintain between speakers. Americans usually feel comfortable when speaking with someone if the distance between them is about eighteen inches to arm’s length. Anything closer makes them feel uncomfortable.
When talking to Americans, it is also important to make eye contact. If you look down when talking to an American, he/she may feel that you are embarrassed, afraid, or trying to hide something.
In addition to knowing how to communicate nonverbally in a country, it is important to know what you and he cannot discuss. In the United States, there are certain topics to avoid when you first meet someone, For example, don’t ask people their age, weight, religion, marital status, how much money they earn, or how much something costs. You can talk about work, the weather, traffic problems, sports, food, news of the day, where one lives, consumer subjects (computers, car repairs, and so forth), and travel or vacation plans.
These few examples illustrate that your actions can speak louder than your words. In a particular cultural contest, what you say and what you don’t say are equally important.

As we can see from the passage there are ______ kinds of nonverbal communication signals.

A．four

B．five

C．six

D．seven