便后出血与用力负重后有软块从肛门露出,应考虑
A.直肠息肉
B.直肠癌
C.肛裂
D.Ⅲ度内痔
E.外痔
参考答案:D
I don't know why Wang Xiaoming _____ us recently. [ ]
A. hasn't wrote
B. hasn't written
C. doesn't write
D. isn't writing
解释物价水平上升如何影响货币的实际价值。