1.Two students are sitting on opposite sides of the same desk. There is nothing in between them but the desk. Why can't they see each other? 两个学生坐在同一张桌子的两侧。除了桌子之外，他们之间没有任何别的东西。为什么他们不能看到对方。 Answer: The two students have their backs to each other.
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