问题补充：
The house they are living now is our house.
A. twice the size as
B. the size twice of
C. twice as the size of
D. twice the size of
答案：
A. twice the size as
B. the size twice of
C. twice as the size of
(答案→)D. twice the size of
解析：考查倍数表达法。倍数表达是高考常考内容，倍数表达要牢记，倍数表达法是高中英语教学的重点，当我们要表达甲是乙的几倍时，通常用句型来表示：：1. “A+倍数+形容词或副词的比较级+than+B”， 2.“A+倍数+as+形容词或副词的原级+as+B”， 3. “A+倍数+the size/height/length/width， etc+of+B”， 4. “……times+what+从句”。本题使用了第3种；句意：他们现在住的房子是我们住的房子是3倍。故D正确。
