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Smartphone ,poor sight
Look around and you’ll see people busy on their smartphones. Smartphones do make our lives easier . But have you ever thought about what they mean to you eyes?
According to a study ,half of British people own smartphones 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 suffer from shortsightedness since smartphones were introduced there in 1997.
Staring at smartphones for long time gives you dry eyes. When looking at something in the distance ,your eyes automatically blink 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 in your eyes. Another bad habit is using  smartphones in dark rooms before going to sleep . If you look at a bright screen while your pupils become larger ,too much light enters your eyes. This can do harm to the eyes and cause a disease called glaucoma.
While you’re probably not going to stop using to your smartphone,there are a few things you can do to protect your eyes. Hold  your phone at least 30 continues 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 focus on the tip of your nose. Repeat this several times. It should reduce the discomfort in your eyes.

小題1:B
小題2:C
小題3:D
小題4:A
小題5:D

試題分析：短文大意：本文主要介紹了使用智能手機的危害，告訴我長時間使用手機會引起眼睛干澀和青光眼。并建議我們連續(xù)使用手機不超過一個小時。
小題1:主旨大意題。根據(jù)短文標題Smartphone ,poor sight及下文描述，可知這篇短文主要講述的是智能手機對我們眼睛的傷害。故選B。
小題2:細節(jié)理解題。根據(jù)There has been a 35% increase in the number of people in the UK who suffer from shortsightedness since smartphones were introduced there in 1997.描述，可知自從1977年以來越來越多的英國人收到了手機的危害。故選C。
小題3:細節(jié)理解題。根據(jù)Staring at smartphones for long time gives you dry eyes. 及下文This can do harm to the eyes and cause a disease called glaucoma.描述，可知使用智能手機只要是能引起眼睛干澀和青光眼。故選D。
小題4:細節(jié)理解題。根據(jù)短文最后一段Take a break every hour and try the following 描述，可知一生建議我們，每使用手機1小時就休息一下。故選A，使用手機不要不休息地超過一個小時。
小題5:主旨大意題。閱讀短文可知本文主要介紹了使用智能手機的危害，并向人們介紹了如何恰當使用手機的建議。故選D。
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