—What were you doing when I phoned you last night?

—I      my painting and was starting to take a bath.

A．have already finished

B．was finishing

C．had just finished

D．was going to finish

不属于正常粪便成分的是（）

A.食物残渣

B.消化道分泌物

C.寄生虫及其虫卵胞囊

D.大肠埃希菌

E.肠球菌