题目内容：
Prices are going up so rapidly. _______（2.0分）2.0 分
A、
Petrol now is twice as expensive as it was a few years ago.
B、
Petrol now is as twice expensive as it was a few years ago.
C、
Petrol now is as expensive as twice it was a few years ago.
D、
Petrol now is expensive as twice as it was a few years ago.
参考答案：