A. 龙骨、牡蛎 B. 朱砂、磁石 C. 龟甲、鳖甲 D. 珍珠、琥珀 E. 珍珠母、紫贝齿
A. had been in love B. had broken up C. had separated D. had been divorced
A. 正确 B. 错误