小儿极重度贫血的诊断指标是()。
A.Hb>120g/L
B.Hb~90g/L
C.Hb~60g/L
D.Hb~30g/L
E.Hb<30g/L
参考答案:E
Film has a much shorter history, especially when __________ such art forms as music and painting.
A.having compared to
B.comparing with
C.compare with
D.compared with
伤寒病理组织病变最明显的部位为()
A.食管
B.胃
C.十二指肠
D.空肠
E.回肠