Before agriculture ____, people made their living by hunting wild animals and their life was ___of nature.    [ ]

A. came into being; at the mercy                

B. was born; in the mercy    

C. began to exist; in danger                    

D. appeared; with the mercy

职业生涯动机包括职业认同、职业洞察力和（）

A.职业生涯目标

B.职业弹性

C.职业适应

D.职业导向