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【单选题】

Cloning has been criticized for all the reasons EXCEPT ______.
A.usefulness in genetics

B.premature aging
C.its effects on the experimental animals
D.safety reasons
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根据网考网移动考试中心的统计,该试题:

50%的考友选择了A选项

24%的考友选择了B选项

6%的考友选择了C选项

20%的考友选择了D选项

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