单选题 She chewed each delicious mouthful as slowly as she could, ______ the pleasure.
A. delaying B. prolonging C. insisting D. indulging

【正确答案】 B
【答案解析】[解析] delay“延期，推迟”；prolong“延长”；insist“坚持”；indulge“满足；沉溺”。根据句意可知，答案是B。