城市道路交通信号灯控制的最基本形式是( )。
A．单控 B．双控C．线控 D．面控
参考答案：A
细胞内水肿的发生基础是
A．细胞内钠离子增多
B．细胞内钾离子增多
C．细胞内氯离子减少
D．细胞内钠离子减少
E．细胞内钙离子增多
—Jane, Peter has got a well-paid job in a foreign company.
—You mean he is much _____ now.
A．badly off
B．well off
C．worse off
D．better off
