We have many cases where hard work as well as good communication skills have _____ one's

chances of success in the past years. [ ]

A. lessened

B. multiplied

C. combined

D. motivated

(103～105题共用题干)
男性，20岁。1周来四肢皮肤散在紫癜，3天来双膝关节肿痛伴阵发性腹疼痛。化验血 Hb 125g/L，WBC 9.5×10⁹/L，PLT 213×10⁹/L，尿蛋白(±)，RBC 5～10个/HP。

下列最有助于诊断的检查是

A．血沉

B．肾功能

C．腹部B超

D．毛细血管脆性试验