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课间操时间到了,各班同学都来到操场上集合排队。亮亮向前面同学看齐时,后背被人推了一把,不由自主往前冲了一步,手
Between classes time is up, each class students came to the playground set line. Brighten the students in front of the line, the back was pushed a hand, involuntarily rushed forward one step, hand