【題目】— Cloning can lead to many complicated problems.
— __________. That's why a lot of people are strongly against it.
A.That's it
B.Nonsense
C.That's all right
D.What a pity

【答案】A
【解析】考查上下文搭配。句意：克隆會導致許多復雜的問題。That's it就是這樣，這就是為什么很多人強烈反對它。故選A項。

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