常见于输血后肝炎是哪型病毒引起（）
A.甲型肝炎病毒
B.乙型肝炎病毒
C.丙型肝炎病毒
D.丁型肝炎病毒
E.戊型肝炎病毒
参考答案：C
______ 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
带状疱疹主要侵犯什么部位（）
A.黏膜
B.皮肤
C.皮肤黏膜交界处
D.脊神经前根
E.神经节
