题目内容：
In dealing with strangers the rule for British society is that you must avoid staring at them but at the same time avoid ignoring them. Passing strangers in the street, for example, you may look at the approaching strangers until they are about eight feet away, then your glances must turn away as they pass. Generally speaking, strangers feel comfortable looking at one another at a distance. The closer the distance is getting, the greater the tendency to avoid eye contact. This can readily be observed in a crowded lift where strangers' glances fly from one spot to another or become absorbed in the ceiling's construction.
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