单选题
With the help of science and technology, the farmers produced ______ crops in 1994o as the year before.
A、
as twice as many
B、
as twice many
C、
as many as twice
D、
'twice as many
【正确答案】
D
【答案解析】
twice as much/many as是常用的表达方式。可数名词前用many，不可数名词前用 much。
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