携隐13-4-Q6 请探讨

Q6:

Which of the following, if true, would most weaken Krech’s objections to Martin’s theory?

1. Further studies showing that the climatic change that occurred at the end of the Pleistocene era was even more severe and widespread than was previously believed
2. New discoveries indicating that Paleoindians made use of the small animals, plants, and insects that became extinct
3. Additional evidence indicating that widespread climatic change occurred not only at the end of the Pleistocene era but also in previous and subsequent eras
4. Researchers’ discoveries that many more species became extinct in North America at the end of the Pleistocene era than was previously believed
5. New discoveries establishing that both the arrival of humans in North America and the wave of Pleistocene extinctions took place much earlier than 11,000 years ago

这道题目的答案给的是B。我觉得不对，B指出“Paleoindians made use of the small animals, plants, and insects that became extinct”似乎对应于文中的“Nor were extinctions confined to large animals:  small animals, plants, and insects disappeared, presumably not all through human consumption”也就是krech自己也承认了人类的消耗对于这些小动物和植物的灭绝有一定贡献，but not all。文中krech用以反驳MArtin的另一个论据就是“Krech also contradicts Martin’s exclusion ofclimatic change as an explanation by asserting that widespread climatic change did indeed occur at the end of the Pleistocene.”

C选项提出"大规模的天气变化不光是在Pleistocene时代发生，在其前和其后的年代都有发生" 很好的削弱了krech对martin的反对。

欢迎大家提意见。