将血浆蛋白置于pH值为8.6的缓冲液中进行醋酸纤维薄膜电泳,泳动最快的是()
A.γ-球蛋白
B.清蛋白
C.α-球蛋白
D.α-球蛋白
E.β-球蛋白
参考答案:B
Professor James will give us a lecture on the Western culture, but when and where yet. [ ]
A. hasn't been decided
B. haven't decided
C. isn't being decided
D. aren't decided
论述21世纪人类的饮食追求。