单项选择题
Henry Ford changed the American society （）
A．through great social revolution B．through automotive technological revolution C．through numerous mechanical inventions D．through radical political reforms
单项选择题 In this passage, the author is mainly discussing the function of （）
单项选择题 It can he inferred from the passage that the author was （）
单项选择题 According to the author, a born naturalist should first of all be （）
