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【单选题】
肾衰竭的胆道感染宜选用A.
阿米卡星
B.
庆大霉素
C.
多西环素
D.
氨苄西林
E.
头孢唑林
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反馈参考答案：
举一反三
【单选题】When I dropped in, Dr Smith _____, so we only had time for a few words.
A.
just left
B.
was just leaving
C.
has just left
D.
had just left
【单选题】Strong families can enjoy high quality of time just by spending little time together.
A.
Y
B.
N
C.
NG
【单选题】．Unfortunately, when I arrived, Mary , so we only had time for a few words.
A.
was just leaving
B.
just left
C.
has just left
D.
had just left
参考解析：
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