单选题 My brother's room is ______ mine.
A. twice the size of B. as twice the size
C. as twice as D. twice the size as

【正确答案】 A
【答案解析】我兄弟的房间是我的两倍大。就两物的某一方面进行比较的形式是：倍数+(表大小/重量等)名词+of。