问句话的逻辑结构

yuanzi15

GWD-6-Q5 to Q7发生在北美的史前物种灭绝是人为的么 这篇文章中的

Martin’s thesis depends on coinciding dates for the arrival of humans and the decline of large animal species, and
                    Krech, though aware that the dates are controversial, does not challenge them; yet recent archaeological discoveries are providing evidence that the date of human arrival was much earlier than 1100 ago.我想请问；后的yet时表示递进关系，进一步支持white还是表示反对前半句话，即反对white呢？谢谢~

yuanzi15

我顶~

yuanzi15

没人么？

yuanzi15

顶~

yuanzi15

我顶~

juggernaut93

做过这篇：

应该是这样的，反对的是：K not challenge的 M的观点

从而yet是对White的支持

因为前文有交待：从White的观点看，K说的次要原因也不够充足

yuanzi15

那么对于结构：;yet来说，yet是转折还是递进？找你的解释应该是递进了？

yuanzi15

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yuanzi15

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yuanzi15

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