任何单位和个人对棉花质量违法行为，均有权（）。

A、检查

B、处罚

C、检举

D、禁止

Dr Ma, ________ ORBIS doctor, has done so important ________ job that many people are grateful to him. [ ]

A. a; a

B. a; an

C. an; a

D. an; an