_____ that Marie was able to set up new branches elsewhere.[ ]

A. So successful her business was

B. So successful was her business

C. So her business was successful

D. So was her successful business

正常情况下，颈椎的生理弯曲度是维持椎管内外平衡的基本条件，如枕头过高或过低对颈椎都可产生不利影响。一般来说，枕头的合适高度是（）。

A.患者拳头的高度

B.患者拳头的1.5倍高

C.患者拳头的2倍高

D.患者拳头的2.5倍高

E.患者拳头的一半高