题目内容
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[单选题]
楚成王时期，()后向中原发展受阻。
A.召陵之盟
B.泓水之战
C.城濮之战
D.长平之战
提问人：网友jannylee
发布时间：2022-01-07
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泓水之战
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第5题
听力原文：As a super hero in her own right, Xena is a female piglet cloned from fetal-pig skin cells. She may prove to be more than the latest addition to the biotech clone farm. Because of similarities between porcine and human organs, the techniques that made Xena may eventually create a supply of genetically modified pig livers that would be acceptable to the human immune system.
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The author believes that, given the similarities between pig and human organs, future technology will allow pig livers to be transplanted to humans.
A．正确
B．错误
