便血伴腹部肿块的疾病不包括（）
A.结肠癌
B.肠结核
C.细菌性痢疾
D.肠套叠
E.Crohn病
参考答案：C
The International Monetary Fund is an international financial organization between( )，which was established on Dec.27th，1945．
A．traders
B．borders
C．governments
D．people
甲车2小时行100千米，乙车3小时行180千米，甲、乙两车的速度比是______．
