我国公安机关的宗旨是( )。

A．全心全意为人民服务

B．以经济建设为中心

C．对敌专政，对人民民主

D．严格执法，热情服务

Henry longs for knowledge_____ his wealth, he worked to round off his career in science ______leading a comfortable life.[ ]

A. Despite, instead of  

B. Thanks to, instead of 

C. In spite of, as well as  

D. Besides; together with