下面几项中，表示“多媒体”优于电话、电视和电脑的特有功能的一项是：
A．人们不仅可以听到声音，而且可以看到形象。
B．人们即使相隔万里也能进行双向交谈。
C．人们可以看到各种数据和图像。
D．既可以接收、也可以发送各种信息。
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面试在求职过程中非常重要、通过面试，如果应聘者的个性不适合待聘工作的要求，则不可能被录用。以上论断是建立在下面哪项假设基础之上？（)
A．必须经过面试才能取得工作，这是工商界的规矩。
B．只要与面试主持者关系好，就能被聘用。
C．面试主持者能够准确地分辨出哪些个性是工作所需要的。
D．面试的唯一目的就是测试应聘者的个性。 -
与小说中的小双性格不符的一项是：
A．纯洁
B．温柔
C．多情
D．直爽 -
动物体的物质代谢主要发生在__。
A．内环境里
B．细胞内
C．肝脏内
D．消化道内 -
Another cultural aspect of nonverbal communication is one that you might not think about: space. Every person perceives himself to have a sort of invisible shield surrounding his physical body. When someone comes too close, he feels uncomfortable. When he bumps onto someone, he feels obligated to apologize. But the size of a person's "comfort zone" depends on his cultural ethnic origin. For example, in casual conversation, many Americans stand about four feet apart. In other words, they like to keep each other "at arm's length", people in Latin or Arab cultures, in contrast, stand very close to each other, and touch each other often. If someone from one of those cultures stands too close to an American while in conversation, the American may feel uncomfortable and back away.
When Americans are talking, they expect others to respond to what they are saying. To Americans, polite conversationalists empathize by displaying expressions of excitement or disgust, shock or sadness. People with a "poker face", whose emotions are hidden by a deadpan expression, are looked upon with suspicion. Americans also indicate their attentiveness in a conversation by raising their eyebrows, nodding, smiling politely and maintaining good eye contact. Whereas some cultures view direct eye contact as impolite or threatening, Americans see it as a sign of genuineness and honesty. If a person doesn't look you in the eye, American might say, you should question his motives—or assume that he doesn't like you. Yet with all the concern for eye contact, Americans still consider staring—especially at strangers—to be rude.
What the author discussed in the previous section is most probably about ______.
A．classification of nonverbal communication
B．the reasons why people should think about space
C．the relationship between communication and space
D．some other cultural aspects of nonverbal communication -
当颁发向河道内排放化学物质的许可证时，它们是以每天可向河道中排放多少磅每种化学物质的形式来颁发的。通过对每种化学物质单独计算来颁发许可证，这些许可证所需的数据是基于对流过河流的水量对排放到河道内的化学物质的稀释效果的估计。因此河流在许可证的保护之下，可以免受排放到它里面的化学物质对它产生不良的影响。上面论述依赖的假设是；（)
A．相对无害的化学物质在水中不相互反应形成有害的化合物。
B．河道内的水流动得很快，能确保排放到河道的化学物质被快速地散开。
C．没有完全禁止向河道内排放化学物质。
D．那些持有许可证的人通常不会向河道内排放达到许可证所允许的最大量的化学物质。