Which of the following can be substantiated based on information found in the passage?答案解析-雷哥GRE

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That some dinosaurs could fly has long been established. That these very same species may have been able to walk--using their wings no less--has been far more controversial. However, the latest computer simulations suggest that the Pteranodon, a pterosaur with a wingspan of up to 25-feet long, while no rapid runner, was able to walk by retracting its wrists so as to walk on its palms. As to why the Pteranodon did so still remains unanswered. One theory is that walking allowed it to forage for food on the ground. While this idea is enticing, proponents of this theory have yet to propose a reasonable answer as to what led to such a dramatic change in both physiology and locomotion. Another explanation is that flying was the evolutionary advantage conferred upon these creatures: in times of scarcity, a flying creature has access to a far greater abundance of fauna than does one limited to terrestrial movement.

Which of the following can be substantiated based on information found in the passage?

Scientists consider evidence based on computer simulations sufficient for backing up a theory. The Pteranodon had other adaptations, besides the ability to retract its wrists, that allowed it to walk. Even if a theory is compelling that theory should not be immune to analysis.

正确答案： AC 耗时：

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253984dyzo

c对应While this idea is enticing, proponents of this theory have yet to propose a reasonable answer as to what led to such a dramatic change in both physiology and locomotion.

2楼 | 2022-09-16 16:23:32 回复

jasongu

这题问什么不选B？

1楼 | 2021-02-19 15:37:01 回复

459702qm 回复 459702qm 属于是一种过渡推断吧，b中说的其余的原因文章就没提到。

2021-07-27 15:10:39 回复
weigan610 回复 weigan610 原文没有提到adaptation。第一个理论当中走路是靠by retracting its wrists so as to walk on its palms，这个只要改变身体形态即可：change in both physiology and locomotion，而不是adaptation。第二个理论当中飞翔是evolutionary advantage，可以推断这是一个 adaptation。但是这只不过是 Another explanation。题目问哪些是substantiated，显然B选项不符合条件。

2023-01-12 13:23:24 回复

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