—I heard that he grew worse after taking the medicine．

—Yes．He was ___________to it．                          [ ]

A. flexible          

B. allergic          

C. disappointed      

D. delicate

亚当·斯密提出的是（）。

A.“社会人”假设

B.“自我实现人”假设

C.“复杂人”假设

D.“经纪人”假设