注册会计师通过询问管理层识别需要作出会计估计的情形时，应当询问的内容一般不包括（）

A、需要作出会计估计的交易的条款是否已改变

B、是否已从事可能需要作出会计估计的新型交易

C、对与会计估计相关的人员是否进行了培训

D、是否已经发生可能需要作出新估计或修改现有估计的新情况或事项

It is the interaction between people, rather than the events ___ occur in their lives, ____ is the main focus of social psychology.

A．that; that

B．that; which

C．which; which

D．that; what