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题库 / Prep2012-CR-35
Perkins: According to an article I read, the woolly mammoth's extinction in North America coincided with a migration of humans onto the continent 12,000 years ago, and stone spearheads from this period indicate that these people were hunters. But the author's contention that being hunted by humans contributed to the woolly mammoth's extinction is surely wrong since, as paleontologists know, no spearheads have ever been found among the many mammoth bones that have been unearthed.
Which of the following, if true, provides the strongest reason for discounting the evidence Perkins cites in arguing against the contention that being hunted by humans contributed to the North American extinction of woolly mammoths?
At sites where mammoth bones dating from 12,000 years ago have been unearthed, bones of other mammals have rarely been found.
The stone from which stone spearheads were made is unlikely to have disintegrated over the course of 12,000 years.
Conditions in North America 12,000 years ago were such that humans could not have survived there on a diet that did not include substantial amounts of meat.
Cave paintings in North America that date from 12,000 years ago depict woolly mammoths as well as a variety of other animals, including deer and buffalo.
Because of the great effort that would have been required to produce each stone spearhead, hunters would have been unlikely to leave them behind.
leave them behind。。。不是【留下，不带走】的意思吗？
在这道题里是【带走】的意思？？？
是留下的意思啊，因为要巨大的努力才能弄好，所以把它们留下了。
我最初理解的是：用完了石枪头之后就leave behind不带走了。。。所以感觉E选项是说反了。。。
不是，这个意思是～在捕猎者弄死猎物后，由于这个矛头比较难做，他们会把矛头带走。这里的leave behind是留在他们自己身边的意思。
是题目印错了吧，leave behind是留在动物体内。这里打漏了unlikely
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