WHO肝炎小组推荐的HBV污染物消毒剂是
A．戊二醛B．合成酚C．碘伏D．乙醇E．次氯酸钠
参考答案：A
_____ as the "first lady of speech", Dr, Lillian Glass is recognized as one of the world’s leading experts on communication skills.
A．Knowing
B．Having known
C．Known
D．To be known
微量营养素就是指维生素。
