Tom Williams, _____scientist of the British Association for the Advancement of Science, is one of _____ kind of persons who can give you _____ hand whenever you are in trouble.

A．a / a / a

B．a / the / a

C．the / a / a

D．the / the / the

监理人在( )授权范围内对除委托监理合同外的合同进行监督管理。

A．法律
B．招标人
C．委托人
D．承包人