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【单选题】
关于引物酶说法错误的是A.
属于RNA聚合酶
B.
属于DNA聚合酶
C.
为DNA合成提供3’-OH末端
D.
以DNA为模板
E.
催化NTP聚合
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反馈参考答案：
举一反三
【单选题】—I'm sorry I stepped outside for a smoke. I was very tired. —There is no ______ for this while you are on duty.
A.
reason
B.
excuse
C.
explanation
D.
cause
【单选题】听力原文：W: John, this new Walkman is absolutely wonderful. M: Yeah, I like it very much. W: Thank you for lending me this Walkman. M: Don't mention it. W: Where did you buy it? M: Tom and Jane bought it ...
A.
Teacher and student.
B.
Siblings.
C.
Friends.
D.
Relatives.
【简答题】（ ）是以天然或合成高分子物质为载体制成的载药微细粒子。
【单选题】听力原文：W: Your spoken English is very good. I like it very much. M: Thank you! You see, I've ever stayed in America for three years and during that time my oral English was improved a lot. Q: How long d...
A.
Two years.
B.
Three years.
C.
Four years.
D.
Five years.
【简答题】是以天然或合成高分子物质为载体制成的载药微细粒子。
【简答题】Happy Sunday I have four goldfishes in my room. They are very beautiful. I love them very much. On weekdays, I’m always busy. I must study and do homework and so on, so I have no time to care(照顾) them...
【简答题】以天然或合成高分子物质为载体制成的载药微细粒子
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