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
网友回答
A. much lighter; than that
(答案→)B. much lighter; than those
C. not so light; as that
D. not so light; as those
解析：在形容词或副词的比较级前面可以用much，little，even等词来修饰，以加强语气。Those体代词代替前文提到的人或物。