I prefer to eat in that restaurant, because the of service there has improved a lot.A. qu

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(答案→)A. quality
B. schedule
C. principle
D. guidance
解析：词义辨析。Quality质量；schedule日程表，时刻表，安排；principle原则，原理；guidance指导。句意：我宁愿在那个餐馆吃饭，因为那的服务质量有了很大提高。所以选A。