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【单选题】
院内感染的重症肺炎在未明确致病菌之前,应给予A.
喹诺酮类+大环内酯类
B.
头孢一代+喹诺酮类
C.
β–内酰胺类+喹诺酮类
D.
氨基糖甙类+半合成青霉素
E.
头孢三代+妥布霉素
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举一反三
【单选题】听力原文：M: I'd love to dance, but I don't know the steps. W: It doesn't matter. No one will be looking at us in this crowd. Q：What does the woman mean? (2)
A.
It's not important how he dances.
B.
It's too crowded to dance away.
C.
If he's careful, no one will notice.
D.
No one knows the steps to dance.
【单选题】听力原文：M: I'd love to dance, but I don't know the steps. W: It doesn't matter no one will be looking at us in this crowd. Q: What does the woman mean? (19)
A.
It's not important how he dances.
B.
It's too crowded to dance anyway.
C.
If he's careful, no one will notice.
D.
No one knows the steps to the dance.
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