The market researchers interviewed people at ______ in the street.
【正确答案】 D
【答案解析】市场研究员在街上随机访问行人。A.at large“详尽的,未被捕的” B.at length“最后,详细地”C.at will“随心所欲的” D.at random“胡乱地。随机地”