单选题
What is the major problem with using animals as body for growing human organs?
A、
Animals will no longer be savage.
B、
Humans will be as savage as animals.
C、
A clear line will be missing between humans and animals.
D、
Animals will have to be given fights of citizenship.
【正确答案】
C
【答案解析】
由文章第3段可知，用动物来克隆人类器官的最大危险是失去人与动物间的分界线。
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