对系统性红斑狼疮诊断特异性最强的抗体是（）
A.ANA
B.抗Sm抗体
C.抗RNP抗体
D.抗dsDNA抗体
E.抗PCNA抗体
参考答案：B
药物经济学评价用药结果的主要形式为
A．效果
B．效率
C．效益
D．效用
E．效能
_____ that Mike was sure to be admitted into the art school. [ ]
A. So successful was his performance
B. So successful his performance
C. So his performance was successful
D. So was his successful performance
