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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1260

--What do you think of cloning?
--No doubt it’s a great invention. But ________, it may have some side effects.

A.if not properly handling B.if properly not handled
C.if not properly handled D.if properly not handling
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Whatdoyouthinkofcloning?Nodoub