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【题目】关于saber-toothed cat(剑齿猫)是否是群居动物。
来源:北美
分类:Archaeology
属性:核心预测
阅读要点
【阅读】saber-toothed cat是群居动物。
1. Fossils of saber-toothed cats with broken bones indicate that they were fed by other saber-toothed cats when they were injured
2. There are large numbers of saber-toothed cats in the trap. The saber-toothed cats hunted together. The sound of dears in the trap attracted them to fall in the trap together
3. Saber-toothed cats lived with other predators such as lions and wolves. Saber-toothed cats have to live in group to compete with those predators.
听力要点
【听力】剑齿猫不是群居动物。
1. The fossils of saber-toothed cats with broken bones indeed indicate that they could survive when they were injured. However it doesn’t necessarily mean that they have to be fed by other saber-toothed cats. Many predators can find dead animals to eat. So did the saber-toothed cats
2. The large numbers of saber-toothed cats in the trap doesn’t mean that they hunt together. The saber-toothed cats hunt separately. One of the saber-toothed cats heard the sound of the trapped dear, went to the trap and fell. Then another saber-toothed cat also heard the sound of the trapped dear, came to the trap and fell again
3. Saber-toothed cats were large predators. Take tigers for example, one tiger is strong enough to fight against the social predators such as lions and wolves. So the saber-toothed cats don’t have to live together to compete with lions and wolves.