問題詳情

47~50)Electronic devices(裝置) help us in many ways, but they may also cause health problems.Looking at screens for too long can cause eye pain, which makes your eyes feel dry and sore. To help your eyes stay healthy, follow “20-20-20” rules: every twenty minutes, focus on something twenty feet away for twenty seconds. People who write a lot of text messages can lead to an injury called “ texting thumb.” The repeated motion of typing with your thumbs can cause thumb and wrist pain.Scientific research suggests that electronic devices can also hurt your mind: One of the biggest problems is that using them can affect your sleep. Doctors say the light-emitting(發光) screens stop you from feeling sleepy. Therefore, they advise people not to use electronic devices for at least one hour before sleeping. Another danger is Internet addiction.(癮) Many people turn to the Internet to ease feelings of stress, sadness, and loneliness. Over time, they might start to depend on the Internet and feel worried if they’re not connected. To stop yourself from falling into this kind of trap, limit the amount of time you spend online.To use your smartphone or computer safely, just make sure you follow these health tips. Also, remember that there is more to life than looking at an electronic screen.
47. What is not part of the “20-20-20” rule?
(A)Distance
(B) Speed
(C) Time
(D) Length(長度) of time

參考答案

答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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