原题
录音 1
What does the speaker say about the evolution of Lithornis over time?
AThe evolution of its breastbone limited its ability to fly.
BIt stopped flying when it no longer needed to escape predators.
CIt evolved the ability to fly after the dinosaurs went extinct.
DIt evolved the ability to eat a wide variety of food.
正确答案：B
解题思路
老师暂未填写解题思路。