2. 外语
  3. ______is the length of the closed curve of a circle.

______is the length of the closed curve of a circle.

admin2016-06-30  56
问题 ______is the length of the closed curve of a circle.
选项 A、Radius
B、Diameter
C、Dimension
D、Circumference
答案D
解析 译文：周长是一个圆的闭合曲线的长度。名词辨析题。circumference意为“圆周；周长”，符合句意，故[D]为答案。radius意为“半径；半径范围”；diameter意为“直径”；dimension意为“维；尺寸；容积”。
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