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As the novel coronavirus pneumonia(新型冠状病毒肺炎) makes students to stay at home, they have to learn online and smart phones(智能手机) make online learning become possible and easy. But have you ever thought about what they mean to your eyes?

According to a study, half of the British people own smart phones and they spend an average (平均) of two hours a day using them. There has been a 35% increase in the number of people in the UK who suffer from shortsightedness(近视) since smart phones were introduced there in 1997.

Staring at(盯着看) smart phones for a long time gives you dry eyes. When looking at something in the distance, 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 slows down. This reduces the amount of tears and causes discomfort(不适) in your eyes. Another bad habit is using smart phones in dark rooms before going to sleep. If you look at a bright screen while your pupils(瞳孔) become larger, too much light enters your eyes. This can do harm to the eyes and cause a disease called glaucoma(青光眼).

If you have to use your smart phone to learn online, there are a few things you can do to protect your eyes. Hold your phone at least 30 centimetres away from your eyes when using it. Take a rest every hour and try the following: look at something at least five metres away from you and then focus on(专注于) the tip( 尖端) of your nose. Repeat this several times. It should reduce the discomfort in your eyes.

1.What makes the students’ online learning become possible and easy?

A.TV sets. B.Cameras. C.Smart phones. D.Robots.

2.From Paragraph 2, we learn that ____________.

A.half of the British people began to use smart phones 23 years ago

B.each of the British people spends two hours a day on smart phones

C.more British people have suffered from shortsightedness since 1997

D.the number of British people who own smart phones increases by 35%

3.The bad habits of using smart phones may cause ____________.

A.too many blinks B.more tears in the eyes

C.smaller pupils D.dry eyes and glaucoma

4.The writer suggests _____________.

A.not using the phone for over an hour without a rest

B.holding the phone at least half a metre away from the eyes

C.turning off your phone for a few hours every day

D.looking at something green and then focus on the tip of your hands

5.The passage is mainly about ________________.

A.the rules to obey when using smart phones

B.the harm that smart phones do to users’ eyes

C.the reason why students get shortsightedness

D.advantages and disadvantages of smart phones

九年级英语阅读单选中等难度题

少年,再来一题如何?
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