It is said that Chinese eat ______ vegetables per person today as they did about 30 years agoA.more than twiceB.as many as twiceC.twice as many asD.more than twice as many
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D解析倍数表达：倍数 +as ... as ... 据说中国人每天的蔬菜食用量是三十年前的两倍多。注意此题中的more than不是比较级是“超过”的意思。