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问题
单项选择题
只对浅表真菌感染有效的药物是( )
A．制霉菌素
B．灰黄霉素
C．两性霉素B
D．克霉唑
E．咪康唑
答案
参考答案：
B
选择题
By the time he arrived in Beijing, we _____ there for two days.
A. will have stayed
B. stay
C. have been staying
D. had stayed
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问答题
票据抗辩权
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