头皮裂伤清创的最佳时限,最迟应在
A.72小时内B.24小时内C.8小时内D.12小时内E.48小时内
参考答案:B
My favorite teacher is Miss Lin, although she has _________ experience.
A.little
B.less
C.least
D.fewest
目前最常引起输血后肝炎的是()
A.HAV
B.HBV
C.HCV
D.HDV
E.HEV