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【单选题】
单克隆抗体制备选择亲本时应选择A.
骨髓瘤细胞系和免疫动物属于同一品系
B.
骨髓瘤细胞系和免疫动物属于不同品系
C.
B 淋巴细胞和骨髓瘤属细胞属于不同品系
D.
B 淋巴细胞与骨髓瘤细胞无亲缘关系
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】根据国务院批准颁布的《行政法规制定程序条例》,行政法规的立法程序分为( )阶段。
A.
立项-起草-审查-决定与公布
B.
起草-立项-审查-决定与公布
C.
提出-审议-表决-公布
D.
准备-确立-完备
【单选题】____, he still continued to work.
A.
As he was tired
B.
Though tired he was
C.
Tired he was
D.
Tired as he was
【简答题】阅读下面短文，掌握其大意，然后从21-40各题所给的四个选项（A、B、C、D）中，选出最佳选项，并在答题纸上将该选项标号涂黑。 In the depths of my memory, many things I did with my father still live. These things come to represent, in fact, what I call __21__and ...
【单选题】_______ many times, he still repeated the same mistake.
A.
Having told
B.
Not having told
C.
Having been told
D.
Not having been told
【简答题】辨析 little ; a little , few 和 a few 17. Dave has _____ friends here, so he often stays at home by himself and feels lonely. 18. Don't worry. We still have _____ minutes to catch the bus. 19. Now tee...
【简答题】Part two: Cloze (20 items, 20 pts.) 阅读下面短文，掌握其大意，然后从各题所给的四个选项（A、B、C和D）中，选出最佳选项 Yesterday I was fortunate enough to find one more person in our world who is kind and caring. It was about 11:00 p.m. 2...
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