计算机病毒的特点()
A、传染性
B、可移植性
C、破坏性
D、可触发性
参考答案:A, C, D
《巴塞尔新资本协议》对操作风险经济资本计量的三种方法其中在复杂性和风险敏感性方面最强的是基本指标法。 ( )
The old man used to live with his wife, but now he _____ alone after she died. [ ]
A. is used to live
B. gets used to living
C. used to live
D. is used for living