Volunteers ______people ______the neighbourhood _____ different problems this weekend.

A．help; in; with

B．will help; in; with

C．are going to help; with; in

D．are helping; in; with

女性，35岁，农民。1个月前曾腹泻，大便每日4～6次，稀便。近半月不规则发热，伴肝区痛，体检：T39.2℃，无黄疸，肝肋下5cm，触痛（+），血WBC8.5×10⁹／L，N80%。

为明确诊断应首先检查（）

A.钩体培养

B.腹部B超

C.乙肝两对半

D.AFP

E.腹部平片