皮皮学，免费搜题
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【单选题】
治疗流行性脑脊髓膜炎的最适合联合用药是( )A.
青霉素+链霉素
B.
青霉素+四环素
C.
青霉素+磺胺嘧啶
D.
青霉素+诺氟沙星
E.
青霉素+氧氟沙星
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A.
More than $17 billion.
B.
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D.
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paying
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to pay
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【单选题】To postpone ______ the debt will ruin our business reputation.
A.
pay
B.
to pay
C.
paying
D.
paid
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