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Archaeopteryx had feathers on its hind limbs that helped stabilize it and acted as air brakes, allowing the otherwise _________ creature to turn more adeptly and fly steadily.
- A.docile
- B.ungainly
- C.unpredictable
- D.torpid
- E.reckless
B显示答案
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以上解析由 考满分老师提供。
