单选题 Since the ______ of human history, human beings have been asking questions like "What is the essence of life"
A. dusk B. dust C. twinkle D. dawn

【正确答案】 D
【答案解析】本题考点为名词的上下文搭配辨析。dawn黎明，拂晓，开始，发端，如：the dawn of intelligence智力的开端。根据题意，选项D为正确答案。