问题补充：
It’s reported that the United States uses energy as the whole of Europe.
A. as twice
B. twice much
C. twice much as
D. twice as much
答案：
A. as twice
B. twice much
C. twice much as
(答案→)D. twice as much
解析：考察倍数表达法。“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”。“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 “……times+more+名词（可数或不可数）+than+被比对象 “A+倍数+the size/height/length/width，etc+of+B”，表示“A正好是B的多少倍 “……times as many/much+名词+as+被比对象 “……times+what+从句，根据结构可知，D正确
