浆细胞病患者血清蛋白电泳图谱的典型变化是（）
A．ALB降低
B．α1降低
C．α2降低
D．出现M蛋白带
E．γ下降
参考答案：A, D
下列关于溶液的说法正确的是（ ）
A．溶液均一稳定，且无色透明
B．一种溶液中只能含一种溶质
C．溶液中各部分的性质不一定相同
D．溶液中溶液质可以是固体、液体和气体
Mr. Lambers refuses to pay income taxes because his conscience will not allow him to support a government that spends billions of dollars on military weapons. Mr. Lambers’s reasoning best illustrates Kohlberg’s () stage.
A．Egocentric
B．Preconventional
C．Postconventional
D．Conventional
