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：
试题分析:此题重点考查形容词的比较级。根据语境可知此句的含义是因引力的原因在火星上的东西比在地球上的要轻得多。在形容词的比较级的前面常用much，a little，a bit，far等词来修饰以加强语气，比较的事物things是复数，故后面要用those来代替故选B。