According to a theory advanced by researcher Paul Martin，the wave of species extinctions that occurred in North America about 11,000 years ago，at the end of the Pleistocene era，can be directly attributed to the arrival of humans，i.e.，the Paleoindians， who were ancestors of modern Native Americans. However，anthropologist Shepard Krech points out that large animal species vanished even in areas where there is no evidence to demonstrate that Paleoindians hunted them.Nor were extinctions confined to large animals： small animals，plants，and insects disappeared，presumably not all through human consumption. Krech also contradicts Martin's exclusion of climatic change as an explanation by asserting that widespread climatic change did indeed occur at the end of the Pleistocene. Still，Krech attributes secondary if not primary responsibility for the extinctions to the Paleoindians，arguing that humans have produced local extinctions elsewhere.But，according to historian Richard White，even the attribution of secondary responsibility may not be supported by the evidence. White observes that 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 11,000 years ago. 　3. In the last sentence of the passage， the author refers to “recent archaeological discoveries” (lines 27-30) most probably in order to 　　(A) Refute White's suggestion that neither Martin nor Krech adequately account for Paleoindians' contributions to the Pleistocene extinctions 　　(B) Cast doubt on the possibility that a more definitive theory regarding the causes of the Pleistocene extinctions may be forthcoming 　　(C) Suggest that Martin's， Krech's， and White's theories regarding the Pleistocene extinctions are all open to question 　　(D) Call attention to the most controversial aspect of all the current theories regarding the Pleistocene extinctions 　　(E) Provide support for White's questioning of both Martin's and Krech's positions regarding the role of Paleoindians in the Pleistocene extinctions 老师，我在做这道题的时候，首先定位到最后一句觉得没说什么重点，就有个yet转折，可能这是用来驳斥前面的某些观点的。所以看选项找有没有驳斥的意思的， 发现5个选项全都在驳斥。。。心里慌了往前找。再回去找的时候时间已到。我就随便选了个B（时间一到各种混乱），因为在做这篇文章之前，我大体看了下原文，记住了原文讲的是P反驳M，W反驳P。后来答案我也看明白了，我认为我做这道题的思路出现了偏差，我想问一下应该怎么修正。

作文，感觉这个有点难找，有些地方不知道驳了算不算抬杠，请英吉老师指点一下改善一下我的思路，谢谢！

作文，感觉这个找不到更多点能驳了，请英吉老师赐教！以及马上要考试了，请问作文一定要找四个以上才稳吗？

这个题C选项为什么不可以呀 按照唐老师的方法的话只看了最后一句怎么拍出C呀 希望唐老师能回答一下

2/1 + 3/2 + 5/4 + 8/8 + 12/16 + 17/32 +…到无穷，问和是多少 6 8 10 12 16

May老师，我这个题解出来是纯算数做出来，感觉有点麻烦，有没有比较简便的方法可以做这个题呢？ 谢谢老师

金栩竹老师，这道题为什么要选择to doing 呢？to do 与to doing有哪些区别呢？感觉没怎么见过to doing 的形式。

Tina老师，这个E的those of 没有问题吗？这个指代的是哪里呢？ B哪里有问题呢？C的错误是在of嘛？

Tina老师，这个come在这里是谁的谓语呀，前面efforts 的谓语不是aimed吗？这里也只有一个连词，连词后的account不也是谓语么。

【张慧雯】老师 不好意思，不好意思🤦‍♀️ 刚刚手抖打错字了。 就是这道题，我刚重新看了一会，文章思路大致有了谱，但是这个题要问什么，自己怎么定位到原文这里，不太懂了。其他题中，像这样的，让你找最不可能的，排除东西做的题，也都不太懂🤦‍♀️

请英吉老师看一下我这个作文的思路有无什么不足，打问号的是我不太确定的，谢谢！