排便次数减少,排便周期延长,或粪质坚硬,或排出不畅,并除外其他内科疾病:()
A.先天性巨结肠
B.肠易激综合征
C.便秘
D.直肠癌
E.结肠癌
参考答案:C
若ax2+24x+b=(mx-3)2,则a=( ),b=( ),m=( )。
-- I want to put up the picture on the wall. Would you mind helping me with it?
-- ______. With pleasure.
A.Of course
B.Of course not
C.You'd better not
D.Thanks a lot