单项选择题

Questions 21—23 are based on a passage about cloning. You now have 15 seconds to read Questions 21—23. What has cloning bypassed

A．The nuclear transfer.
B．The process taking DNA.
C．The normal reproductive process.
D．The creation of cells.

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Questions 21—23 are based on a passage about cloning. You now have 15 seconds to read Questions 21—23. What has cloning bypassed 您的浏览器不支持 audio 元素。