单项选择题

A．They were made by the hackers and put on computers.
B．They were not found by the experts.
C．They were prepackaged and found on many computers.
D．They were hard to find.
<上一题 目录 下一题>
热门 试题

单项选择题
A．Through televisions.B．Through telephones.C．Through being brought to the radio station.D．Through the internet.
A．Through televisions.
B．Through telephones.
C．Through being brought to the radio station.
D．Through the internet.
单项选择题
A．Two.B．Three.C．One.D．Four.
A．Two.
B．Three.
C．One.
D．Four.
相关试题