题目：
How big is the house he moved in
A．As big as the old one.
B．Twice as big as mine.
C．As big as mine.
D．Twice bigger than mine.
答案：
参考答案：B
解析：比较结构。根据原文“…he has lived in a house twice as big as mine．”，译文为：他住的房子是我的房子的两倍。b选项再现了原文的as big as结构。d选项最具迷惑性，Twice bigger than mine，译文应为：比我的房子大两倍，即是我的房子的三倍。
，当t=0时A=2i+j，则A等于（）。
