下列方法中( )是执行线程的方法。
A．run()
B．start()
C．sleep()
D．suspend()
参考答案：A
可引起血钾升高的药物是：
A．泮库溴铵
B．山莨菪碱
C．加拉碘铵
D．筒箭毒碱
E．琥珀胆碱
Several taxis had passed, but _____ of them stopped. We had to go on waiting. [ ]
A. all
B. neither
C. any
D. none
