Only after a baby seal is pushed into the sea by its mother to swim.
Ahow will it learn
B. will it learn how
Cit will learn how
D. and it learns how
网友回答
A. how will it learn
(答案→)B. will it learn how
C. it will learn how
D. and it learns how
解析：考查倒装句：句意：只有在小海狮被妈妈推倒水里，它才知道怎么游泳。Only+时间状语从句放在句首的时候，主句用部分倒装，will提到主语前面，选B。