问题补充：
The moon isthe earth .
A. as big as forty-nine times
B. forty-nine times bigger than
C. as big as one-third
D. one-third the size of
答案：
A. as big as forty-nine times
B. forty-nine times bigger than
C. as big as one-third
(答案→)D. one-third the size of
解析：可联系答.案.网客服索取。
