单项选择题


A．but
B．except
C．with
D．besides
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单项选择题
What does the author mean when he says They will have a bit of time (Par
A．5)A. Designer babies will soon be a reality in the near future.B. Nature will be altered by designer babies.C. There is no need at the moment to be too worried about designer babies.D. Scientists are working against time to design babies
单项选择题
From the passage we know that ______.
A．designing babies may bring people a lot of ethical concerns
B．designing babies is purely scientific not to cause ethical problems
C．the prospect of designing babies has caused criticism from communities
D．people are concerned about the harm done to science by designing babies
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