【题目】Americans eatvegetables per person today as they did in 1910.
A.more than twice
B.as twice as many
C.twice as many as
D.more than twice as many

【答案】D
【解析】本题考查了as many...as...结构的用法。凡修饰比较等级的成分只能放在比较等级的前面，不能放在中间或后面；此处空半格as...as...前面是表示倍数的词，再前面是修饰倍数的词。句意：美国每人现在吃蔬菜是1910年的两倍多。根据句意，故选D。