问答题

河南省的省会是？

答案： 1.开封
2.郑州
正确答案：郑州
郑州，简称“郑”，古称商都，是河南省省会、中国中部地区重要的...

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单项选择题

In gene cloning, Which of thefollowing refers to DNA recombinants?
A、Renaturation of two DNA single strands from different sources
B、The linker formed between target gene and vector
C、The linker formed between prokaryotic DNA and eukaryotic DNA
D、The linker formed by two different structural genes
E、The linker formed between DNA and RNA

不定项选择

富强、民主、文明、和谐是社会主义核心价值观社会层面的价值要求。‌
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A．正确
B．错误