单项选择题

A．better than
B．rather than
C．less than
D．other than
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单项选择题
A．performingB．playingC．undertakingD．lacking
A．performing
B．playing
C．undertaking
D．lacking
单项选择题
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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