闻鸡起舞 · 江西专升本刷题

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单项选择题英语练习题

Smart phones have become an important part of our daily life. People use them to make phone calls, send messages, read news, and even pay for things. However, many people, especially young students, spend too much time on smart phones. They look at the screen while walking, eating, and even before going to sleep. Doctors say this is bad for eyes and necks. Using phones for a long time can also affect sleep. Some people cannot sleep well because they use their phones in bed. Many schools have made rules to stop students from using phones in class. Teachers hope students will pay more attention to their studies. In fact, smart phones are not necessarily bad. The problem is how we use them. If we use them in a right way, they can be good helpers in our life. For example, we can use learning apps to look up new words or listen to English while walking.

Why do some people sleep badly according to the passage?

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