What does the passage mainly discuss? The author mentions saber-toothed cats in line 16 as an example of a carnivore that

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问题 What does the passage mainly discuss?
The author mentions saber-toothed cats in line 16 as an example of a carnivore that

选项 A、became extinct before the Pleistocene epoch
B、was unusually large for its time
C、was not able to compete with humans
D、caused the extinction of several species

答案C

解析

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托福（TOEFL）

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