预防接种异常反应鉴定专家库由()及法医等相关学科的专家组成,并依据相关学科设置专业组。
A、临床
B、流行病学
C、医学检验
D、药学
参考答案:A, B, C, D
It is said that the early European playing-cards ______ for entertainment and education.[ ]
A. were designed
B. have designed
C. have been designed
D. were being designed
成釉细胞最早分泌的釉基质蛋白是()
A.釉原蛋白
B.釉蛋白
C.鞘蛋白
D.胶原纤维
E.非胶原蛋白