Things are ________ on Mars ________ on Earth because of the different gravity. 

A. much lighter; than that           B. much lighter; than those 

C. not so light; as that             D. not so light; as those

 

【答案】

B

【解析】

試題分析：句意：由于不同的重力物品在火星上比在地球上輕得多。Things是復數(shù)形式，所以可用those代替。根據(jù)常識可知物品在火星上比在地球上輕,所以選B。

考點：考查形容詞的比較級。

 

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