形成职业态度，是从业人员实现职业目标的精神动力的是（）

A、职业理想 

B、职业良心 

C、职业荣誉 

D、职业作风

Electronic mail, or mail, as it is known to its many fans, has been around for over two decades. Typically, email systems support five basic functions, as described below. (41) refers to the process of creating messages and answers. (42) refers to moving messages from the originator to the recipient. (43) has to do with telling the originator what happened to the message. Was it rejected Was it lost (44) incoming message is needed. So people can read their email. (45) is the final step and concerns what the recipient does with the message after receiving it.

（42）是（）

A.Composition

B.Transfer

C.Reporting

D.Displaying