Some birds that are molting maintain balance during flight by______.A.constantly preening

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Some birds that are molting maintain balance during flight by______.

A.constantly preening and caring for their remaining feathers

B.dropping flight feathers on both sides at the same time

C.adjusting the angle of their flight to compensate for lost feathers

D.only losing one-third of their feathers

热搜:一个c程序的执行是从本程序的main函数开始