红外分光光度法测定水中油类，萃取剂四氯化碳使用前应进行检验，在2600—3300cm

要自强就要[ ]

①根据自己的兴趣、爱好和社会的需要确立奋斗目标②战胜自我③扬长避短④拒绝任何人的帮助

A．①②④

B．①③④

C．①②③

D．②③④

鞍区主要指以蝶鞍为中心的解剖范围，主要包括（）

A.鞍下方的蝶窦，鞍上方的视交叉、下丘脑

B.鞍旁（两侧）的海绵窦，鞍后方的斜坡上段骨质，鞍前方的眶尖

C.垂体柄通过鞍隔孔将下丘脑正中隆起与垂体相连，下丘脑位于垂体上方

D.垂体位于鞍内，下丘脑前方为视交叉，后方为 * * 体，下底部为灰结节

E.筛窦和上鼻甲

冠心病患者出现心前区收缩期喀喇音及收缩晚期吹风样杂音，是由于

A．心室壁瘤 

B．心力衰竭 

C．二尖瓣相对性关闭不全 

D． * * 肌功能不全致二尖瓣脱垂 

E．室间隔穿孔

下列各句中，没有语病的是（）。

A．葛振华大学毕业后回农村当起了村支书，他积极寻找本村经济的切入点，考虑问题与众不同，给村里带来一股清新的气息。

B．荞麦具有降低毛细血管脆性、改善微循环、增加免疫力的作用，可用于高血压、高血脂、冠心病、中风发作等疾病的辅助治疗。

C．王羽除了班里和学生会的工作外，还承担了广播站“音乐不断”、“英语角”栏目主持，居然没有影响学习成绩，真让人佩服。

D．阅览室图书经常出现“开天窗”现象，我们可以从这一现象反映两个问题，一是阅读者素质有待提高，一是管理力度有待加强。

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 30 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 O.K. " 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.

The main idea of the passage is that when you are in another country, ______.

A. it is unimportant to know the language
B. it is important to know what you can talk about to a foreigner
C. to know how to communicate nonverbally is as important as to know the language
D. to communicate the rough gestures is more important than to know the language