引起产褥感染的外源性感染最常见病原菌是（）
A.β-溶血性链球菌
B.厌氧链球菌
C.大肠杆菌
D.葡萄球菌
E.支原体衣原体
参考答案：A
Having lost all their _____ in a big fire, the Blacks had to depend on their friends and relatives for a living.
A．galleries
B．reputations
C．signatures
D．possessions
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