单选题
30.
An ordinary subway train, approaching the station, can be ______ the loudest jet.
A、
twice as loud as
B、
as loud as twice
C、
as twice louder as
D、
as louder as twice
【正确答案】
A
【答案解析】
倍数表达题。表达倍数的结构包括“A+be+倍数+as+计量形容词原级+as+B”和“A+be+倍数+计量形容词比较级+than+B”，因此答案为A。
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