朱砂安神丸的功能是清心养血和（）

A.镇惊安神

B.宁心安神

C.益气安神

D.养血安神

E.补心安神

My sister doesn't like bread. She won't eat it ____________she is very hungry.          [ ]

A. if        

B. when        

C. as        

D. unless