基礎Technology

The Double-Edged Sword of Smartphones

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Today, smartphones are an part of our daily lives. They allow us to communicate with friends, search for information instantly, and enjoy entertainment anywhere. For many students, a phone is a helpful tool for studying, as it provides access to online dictionaries and educational videos. However, there is a growing concern about smartphone . Many people feel if they are away from their phones for even a short time. Some students spend too many hours on social media instead of sleeping or doing homework. This can lead to poor performance and health problems. To use technology wisely, we must set rules for ourselves, such as putting our phones away during study time. While smartphones offer great , we should ensure they do not control our lives.

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What does the word 'they' in the last sentence refer to?

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