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【单选题】
最早被用于基因治疗的载体是（ ）。A.
逆转录病毒
B.
慢病毒
C.
腺病毒
D.
腺相关病毒
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反馈参考答案：
举一反三
【单选题】肌内注射给药的外文缩写是 A.im B.H C.1V D.iv gtt E.po
A.
肌内注射给药的外文缩写是 A.im
B.
H
C.
1V
D.
iv gtt
E.
po
【单选题】______ it left to me to decide which color we should use, I should definitely choose green.
A.
Was
B.
Were
C.
Has
D.
Did
【简答题】How does the band the Rolling Stones get its name? Lesson 5
【单选题】______ it left to me to decide, I would not hesitate to prefer the first proposal.
A.
Had
B.
Should
C.
Were
D.
If
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