根据题意得,x-2=0,
解得x=2.
故答案为:2.
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