Find a remote place-an unfamiliar setting where it is unlikely you would meet a friend, or be disturbed... the ponder one of the following questions.
找到一个偏僻的地方——一个你朋友不会遇见你的不熟悉的背景，这样你就不会被打扰……思考下面的问题。
The study involved 23 overweight and 42 normal weight children between the ages of 9 and 15, who were randomized to participate with either a friend or an unfamiliar person of a similar age.
这项研究包括23名体重超重儿童和42名体重正常儿童，年龄在9到15岁之间。他们被随即分配给一个朋友或者是并不熟悉的同龄人。
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