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() What is the main content of this audio clip.
A . Helping computer users to protect themselves from cyber attacksB . Giving suggestions on how to choose a good computer
C . Giving information about online crimes
D . Helping users to set up their computers

参考答案


完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
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