While children learn spoken and body language—proper postures, eye behaviors, etc. —they also learn a subtler thing; how to react to space around them. Man walks around inside a kind of private bubble, which represents the amount of air space he feels he must have between himself and other people. Anthropologists, working with cameras, have recorded the tremors and minute eye movements that betray the moment the individual' s bubble is breached. As adults, however, we hide our feelings behind a screen of polite words. Anthropologist Dr. Edward T. Hall points out that, for two unacquainted adult male North Americans , the comfortable distance to stand for private conversation is from arm' s length to about four feet apart. The South American likes to stand much closer which creates problems when two meet face to face. For, as the South American moves in, the North American feels he' s being pushy; and as the North American backs off, the South American thinks he's being standoffish. The American and the Arab are even less compatible in space habits. Arabs like close contact in some instances, they stand very close together to talk, staring intently into each other' s eyes and breathing into each other's face. These are actions the American may associate with sexual intimacy and he may find it disturbing to be subjected them in a nonsexual context. The amount of space a man needs is also influenced by his personality—introverts, for example, seem to need more elbow room than extroverts. Situation and mood also affect distance. Moviegoers waiting in line to see a sexy film will line up much more densely than those waiting to see a family-entertainment movie.

【正确答案】 D

【答案解析】解析：第一段第二句讲了什么是private bubble，即人们走到各个地方所要保持的个人空间。因此D为正确选项。A项“人生存所需的空间”。private bubble并不是生存所需，因此是不对的。B项“当被打破的时候，每个人都可以看出他的紧张”。根据第一段倒数后两句，人类学家可以捕捉到人们个人空间被侵犯到时那种轻微的抖动。这就表明这种被侵犯到个人空间的反应并不是每个人都可以看出的。C项“是在成年时期形成的”。从第一句可以看出，这种观念从儿童时期就有了。