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问题 单项选择题

龙骨与牡蛎的共同功效是（）

A.平肝潜阳，清肝明目

B.平肝潜阳，纳气平喘

C.平肝潜阳，软坚散结

D.平肝潜阳，收敛固涩

E.平肝潜阳，清热利尿

答案

参考答案：D

选择题

---_________do you write a letter to your father?

--- I seldom or never do that now. Instead, I call or e-mail him almost every day.

A．How soon

B．How long

C．How much

D．How often
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单项选择题

香囊中含有与天然麝香相同的麝香酮、降麝香酮成分的动物是

A．复齿鼯鼠

B．麝鼠

C．中华鼢鼠

D．大灵猫

E．小灵猫
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