The moon isthe earthA. as big as forty-nine times.B. forty-nine times bigger thanC. as big

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：本题考查考生的地理常识及倍数表达方法。按照正确的倍数关系表示方法，选项中只有B、D两项可选，而B项不合实际情况，故排除。