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It is said that the gravity on Mars is only about __________ of the gravity on earth.

A.three-eighthsB.third-eighthC.three-eighthD.third-eighths

 

A

【解析】

试题分析:句意:据说火星上的重力是地球上重力的八分之三。分数的表达为分子用基数词,分母用序数词,当分子大于一时,分母的序数词用复数形式;故选A。

考点:考查分数的表达。

 

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