问题补充：
Its said that the power plant is now large as what it was.
A. twice as
B. as twice
C. twice much
D. much twice
答案：
(答案→)A. twice as
B. as twice
C. twice much
D. much twice
解析：句意：据说，这个发电厂是它过去的两倍大。倍数表达的基本结构一般为： 1. “A+倍数+形容词或副词的比较级+than+B”，表示“A比B大（长、高、宽等）多少倍”。 2. “A+倍数+as+形容词或副词的原级+as+B”，表示“A正好是B的多少倍”。 3. “A+倍数+the size/height/length/width， etc+of+B”，表示“A正好是B的多少倍”。 4. “……times+what+从句”。联系下文large as，可知A。
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