女性，30岁，近3年来梳头时易脱发，经常反复发生口腔溃疡。2年来冬季遇冷时手指苍白疼痛继之发紫，后恢复正常。询问病史得知，夏天病人受阳光照射后面部易患红斑，怀疑是SLE。

下列哪项检查结果表明病变在活动期（）

A.ANA呈颗粒阳性

B.ESR增快

C.C3、CH50降低，CIC升高

D.高滴度RNP抗体

E.高Sm抗体阳性

93. The diligent student refused the help of others and insisted on working out the difficult maths problem _____.

A．on his own

B．in his own

C．of his own

D．for his own