In spite of the city’s crowded urban environment, opportunities for outdoor _______ are never lacking.A.receptionB.reservationC.recreationD.regulation
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C解析考察名词辨析。Reception接待，接收 reservation 预约，预定 recreation娱乐 regulation规则，规定句意为尽管市区的环境很拥挤，但是户外娱乐的机会从来是不缺乏的。