.How many of us ____ a meeting that has nothing to do with us is not important at all.

A．attending

B．to attend

C．have attended

D．attend

多发性骨髓瘤诊断依据之一是血清蛋白电泳图谱中出现

A．α₂球蛋白↑

B．γ球蛋白↑

C．γ或β区带中或γ和β之间有一条密集，深染的区带

D．β球蛋白↑

E．α₁球蛋白↑