【題目】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】D

【解析】

試題分析：考查倍數(shù)的用法。表示“……是……倍”，由“倍數(shù)+as +形容詞+ as +”結(jié)構(gòu)組成。as many as和…一樣多，但由后文as they did中出現(xiàn)了as，與C選項as many as重復(fù)。句意：今天的美國人每人吃蔬菜的量,是他們在1910年吃的兩倍多。故選D

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