Look around and you’ll see people busy on their smart phones(智能手机). Smart phones do make our lives easier than before. But have you ever thought about what they mean to your eyes?
According to a study, half of British people own smart phones and they spend an average of two hours a day using them. There has been a 35% increase in the number of people in the UK who are shortsighted(近视) since smart phones were introduced there in 1997.
Looking at smart phones for a long time gives you dry eyes. When looking at something far away, your eyes automatically blink(自动眨眼) a certain number of times. However, when you look at things closer to your face, the blinking will slow down and this will be bad for eyes. Another bad habit is using smart phones in dark rooms before going to sleep. If you look at a bright screen, your pupils(瞳孔) will become larger and too much light will enter your eyes. This can do harm to the eyes and cause a disease called glaucoma(青光眼).
There are a few things you can do to protect your eyes. Hold your phone at least 30 centimeters away from your eyes when using it. Take a break every hour and try the following: look at something at least five meters from you and then try to look at the tip of your nose. Repeat this several times and it should reduce the discomfort in your eyes.
Although smart phones are useful, please use them in a right way.
第一题题完成句子，第二到三题简略回答问题，第四题找出并写下第四段的主题句，第五题将文中画线句子译成汉语。
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Thanks to smart phones, our lives become ______________than before.
(2)
When were smart phones introduced to the U.K.?
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(3)
What will happen when you look at things closer to your face?
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(4)
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(5)
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