问题补充：
单选题StudiesshowthatAmericanschatontheirphonesformorethanfivehoursamonth,_____Europeans.A.as much as twiceB.twice as much asC.as much twice asD.as twice much as
答案：
B解析考查倍数表达法。倍数表达法：倍数+as adj n as ；倍数永远放在最前面。可知B正确。
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