75. Taiji boxing is good _____ health, so the old man began to practise it ten years ago and now he is good _____ it.

A．for; to

B．to; for

C．for; at

D．at; for

企业信息中心的运营管理和服务方式不包括（）。

A.互相结合

B.集中式

C.分散式

D.交互式