醋酸纤维薄膜电泳时，位于β区带的血浆蛋白质有()
A．TRF
B．LDL
C．β-MG
D．C3
E．IgG
参考答案：A, B, C, D
As high school students, it’s very important to keep ourselves ______ of what’s happening home and abroad every day.
A．to inform
B．informing
C．informed
D．be informed
正在发生质壁分离的细胞，其吸水能力将（）
A．逐渐变大
B．逐渐变小
C．不变
D．先变大后变小
