问题
选择题
Americans eat_____vegetables 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
答案：A
A[解析]more than twice表示数量，放在as … as结构前，是……的两倍多。美国人现在每人所吃的蔬菜是1910年的两倍多。