Tom and I had each a bedroom, and a third room ____ as our study.

A．in common

B．in common with

C．out of the common

D．by common

右半结肠癌的临床特点是（）。

A.晚期有排便习惯改变

B.右腹肿块及消瘦、低热、乏力等全身症状为主

C.以便秘、便血等症状为主

D.早期可有腹胀、腹痛等肠梗阻症状

E.腹泻，腹泻以进食后加重，排便后减轻