单选题 The official kiln in ancient China gathered the most skilled ______ and used a strict manufacturing process, ______ represented the highest level of porcelain making at that time.
【正确答案】 A
【答案解析】[解析] 句意：中国古代官窑聚集了最有技术的工匠，其严格的制造工艺，代表了当时制瓷的最高水平。craftsman工匠；手艺人。bricklayer砖匠。第二个空定语从句的先行词为“制造工艺”，所以关系代词应用which。