No man probably had a greater effect on the daily lives of most people of the USA Henry Ford______, a pioneer in automobile production.A.as ,wasB.as,didC.than,wasD.than ,did
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D解析根据had a greater effect on 可知这句子要用比较级，而且 did 代动词，代替had an effect on the daily lives of most people of the USA,故选项D是正确的。