单项选择题

A．performing
B．playing
C．undertaking
D．lacking
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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
单项选择题
The consumers' first motivation in buying personal computer is to ______.
A．play video games
B．make writing easier for themselves
C．facilitate their entrance into the stock market
D．transmit printed information
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