She is very dear to us. We have been prepared to do _____ it takes to save her life. [ ]

A. whichever

B. however

C. whatever

D. whoever

分段诊刮正确的操作是（）

A.为防止穿孔，宫底部最好不刮

B.必须进行全面的刮宫，以获取足够的组织

C.必须首先探测宫腔

D.先刮宫颈管，再刮宫腔，分别送病理检查

E.先刮宫腔，再刮宫颈管，分别送病理检查