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【单选题】
用生理盐水溶解可盐析产生沉淀的药物是A.
克林霉素
B.
氨苄西林
C.
乳糖酸红霉素
D.
青霉素钾
E.
青霉素钠
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反馈参考答案：
举一反三
【简答题】become, became, .
【单选题】Which club has Mary already joined?
A.
Student Union.
B.
Geology club.
C.
Guitar club.
D.
Accounting society.
【单选题】We all hope ____ scientists. A. become B. to become C. becoming D. became
A.
become
B.
to become
C.
becoming
D.
became
【单选题】--Is Peter a new member in your art club? --No. He _____ our club for two years.
A.
joins
B.
has joined
C.
has been in
【单选题】It's more than 8 years since I a teacher. [ ]
A.
become
B.
have become
C.
became
D.
becomes
【单选题】It _____ more than half a year since I _____ a teacher. [ ]
A.
is, become
B.
was, become
C.
is, became
D.
has been, becomes
【简答题】The ______ (member) of the club has now increased to a total of 800.
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