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V5
the extinction of reptile and amphibian and Trias (geology majors maybe glad to see this article)
1.the academics has long been discussing how animals such as reptile and amphibian became extinct.
2.some says the appearance of dinosaur caused it.
3.there is counterevidence. some says environmental changes. there is also counterevidence.
4.the author also found meteor in Canada has been related to the extinction.
5. so the author thinks the extinction is not caused by any single factor, but rather by multiple factors.
Q1: the function of citing the meteor in Canada
Q2:强调陨石撞击时间的作用是什么,我选的是为了证明跟其中一些动物的灭绝时间吻合来说明一些动物确实是被陨石撞击所造而灭绝的。
Q3: 科学家已经能做到下面哪一项了...答案选estimate陨石的时间.其他的还包括1.确定争抢栖息地一定不是灭绝的原因2.那一段时间内各个事件发生的先后顺序...
Q4.有考到INFER题问哪个是对的,A好像是在恐龙出现前有物种开始灭绝,B在干旱之后很久有物种灭绝 C MOST物种在恐龙时期灭绝 D MOST物种在陨石撞击的时候灭绝 |
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