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There are several explanations for why the circle is divided into 360 parts. Probably the best explanation is connected with the Babylonians(巴比伦人).
Many, many centuries ago, large distances were measured in the Babylonian mile. The Babylonian mile equaled about seven of our miles. Because of its length, the time needed to travel the Babylonian mile became a measure of time. One day was said to be twelve Baby-Ionian time-miles.

A．how
G.why
H.the
I.the

【参考答案】

B
解析：由文章第一段可知。

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