配置木马时,常见的信息反馈方式有_________。
A.设置E-mail地址
B.设置IRC号
C.设置ICO号
D.设置文件名
参考答案:A,B,C
— How often does he write emails to his friend?
— ______. [ ]
A. Once a month
B. In a week
C. For half an hour
D. Last Monday
六氟化硫是一种无色、无味、无毒且()的惰性气体