对过分突出的上颌结节是否要手术、需考虑的因素有（）

A.是否两侧均突出

B.是否妨碍取印模

C.是否上颌前牙区牙槽嵴也向唇侧突出

D.是否有上颌结节下垂、接近下颌磨牙后垫

E.是否患者身体能耐受手术

Liu Ying is good at singing. She sings ______the famous singer, CoCo.

A．as well as

B．as good as

C．as better as

D．as the best as