浆细胞病患者血清蛋白电泳可见M蛋白带，此区带较多出现在()
A.Alb区
B.α1区
C.α2区
D.β区
E.γ区
参考答案：D, E
—My brother and I will go to the library tomorrow.
—_______. Shall we go together? [ ]
A. So I do
B. So do I
C. So will I
D. So I will
写出腐蚀运算的处理过程。
