Internet addiction: refers to a type of mental and behavioral disorder caused by an individual's repeated excessive use of the Internet, which is manifested by a strong desire for re-use of the Internet, withdrawing reactions when stopping or reducing the use of the Internet, and can be accompanied by mental and physical symptoms. Which of the following are Internet addictions? ['Xiaoli handles text materials online every day, and now uses almost no paper and pen.', "Xiao Wang likes online games, soaks in Internet cafes all day and night. If he doesn't surf the Internet all day, it feels like he lost his soul.", "After the internet company went bankrupt, engineer Xiao Li lost his heart and didn't know what he could do.", 'Mr. Li is keen on stock trading. He goes to the Internet every day to watch stock market quotes.']