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阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

Indonesian university student Tyas Sisianindita spends about eight hours a day on her phone. That time includes 1. (watch) videos, chatting with friends and using social media.

ul realize that I am addicted>n she said, noting she checks her phone countless times, "At night, when I can’t sleep, I can use my phone for up 2. five hours. " Tyas goes to the University of Indonesia, where a team of students 3. (recent) developed a device meant to fight phone addiction.

The students spent three 4. (month) creating the device, which can help the Internet users like Tyas reduce the time they spend looking at their phones. The device 5.(call) “Nettox”. Users wear it on their arm.

The Nettox device makes a sound when HRV (心率变异性)and blood oxygen levels fall caused by using a mobile phone for long hours, which tells wearers 6.(stop) using their phones. For people between the ages of 187. 25, the HRV should stay above 60.

Internet addiction is a growing 8. (society) problem in Indonesia. In October, two teenagers were treated for 9. (they) addiction to Internet gaming, the media reported. HRV readings can change depending on if the user is a man or woman, and 10.their body shape and health conditions are.

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