Each of the 400 people received from their boss ______ gift － “Who moved my cheese?” , ______ best-seller in the US, which helped them understand how to deal with changes in their lives and work.

A．the; /

B．a; the

C．a; a

D．the; a

不管行为人是否施行了相关行为，只要其主观上有犯罪的故意或过失，他就构成了犯罪。 ( )