__________ to his scientific work, he has no time to care for his family affairs, which his wife always complains about.

A．Devoting

B．Devoted

C．Being devoted

D．Having devoted

（2009）下列关于房源信息内部推广的表述中，正确的是（）。

A.内部推广是指在老客户内部进行房源营销

B.内部销售会议是内部推广的重要手段

C.内部推广成本较高

D.内部推广主要依靠房地产经纪人的关系网