It seems that Internet itself has become an extension of everything we do.
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But it has also got some bad effects, such as making us suffer a sort of addiction.
Some experts are concerned that Internet is not suitable for the weak-willed ones because they may get addicted to the games on the Internet.
请观看章节1.2.1和1.2.2中的视频,然后用几句话准确概括马克思的一生。