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【单选题】
与“多利”羊等克隆哺乳动物相关的技术有（） ①人工授精 ②胚胎移植 ③细胞培养 ④核移植A.
①③④
B.
①②③④
C.
②③④
D.
①②③
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反馈参考答案：
举一反三
【单选题】连接“肺主呼吸”和“心主血脉”的中心环节是( )
A.
经脉的相互连接
B.
气血的相互关系
C.
心主营，肺主卫之间的相互作用
D.
宗气的贯通和运行
E.
以上都不是
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