_______ avoid possible embarrassment, Tom ______ignores her former girlfriend whenever he sees her. [ ]

A. In order to; deliberately  

B. As to; intentionally  

C. So as to; purposely  

D. So that to; on purpose

产品线延伸策略的视线方式主要有（）。

A.向上延伸

B.向下延伸

C.向内延伸

D.向外延伸