填空题 Human speech developed from primitive man giving vocal expression to the objects he encountered. This is known as " 1Theory".
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【正确答案】 1、正确答案:The Natural Response    
【答案解析】解析:(考查语言先天反射理论)这种理论认为语言起源于人类在面对环境中所遇到的事物时发出的声音。