Things are on the moon on the earth .
A. much lighter ; than
B. much heavier ; than
C. as heavy ; as
D. not so light ; as
网友回答
(答案→)A. much lighter ; than
B. much heavier ; than
C. as heavy ; as
D. not so light ; as
解析：句意：东西在月球上比在地球上轻得多。Light是轻的意思，heavy是重的意思。much可以修饰比较级，结合语境可知选A。