问题
选择题
The earth is 49 times ___the moon.
A．as bigger as
B．so big as
C．the size of
D．of the size of
答案
答案：C
倍数有三种表达法：⑴A is three times bigger than B⑵A is three times the size of B⑶A is three times as big as B。这符合第二种。