The point ______ water boils is called boiling point.

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问题 The point ______ water boils is called boiling point.

选项 A、when
B、that
C、at which
D、for

答案C

解析句意：水沸腾的那一时刻叫沸点。point: (时间的)点；(特定)时刻；瞬间：It was a turning point in his career. 这是他事业上的转折点。At the point he got up and left the room. 此时他站起来，离开了屋子。

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大学英语三级A级

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