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17.Protecting Your Eyesight
It's important for us students to protect our eyesight.However,many students have poor eyesight.It is reported that nearly three in every ten students wear glasses.Many students often keep reading for long under poor light and little by little they become short-sighted.Do you know how to protect your eyesight?Here are some pieces of advice for you.
First,we should read under soft light with the book about 30cm from our eyes.Second,don't read in the sun or in the poor light.Third,never read when we are on a bus or in bed.Finally,do eye exercises every day.
If you follow the suggestions mentioned above,you will have good eyesight.

阅读上面短文,根据短文内容,完成表格中的信息.
                            Protecting Your Eyesight
The number of the students who wear glassesThree(71)ineverytenof the students
The reason why many students become short-sightedKeep reading for a long(72)timeunder poor light


How to protect our eyesight
1.To read under soft light and the(73)distancefrom the book to our eyes is about 30cm
2.Not to read in the sun or in the(74)poor light
3.Not to read when we are on bus on in bed
4.To do eye(75)exercisesevery day.

分析 这是一篇说明文.保护视力对学生来说很重要的,目前大约有十分之三的学生都戴眼镜.很多学生都是在光线不好的环境中长时间阅读而一点点近视的.文中给出了几点保护视力的建议:在柔和的光线下阅读,眼睛离书30厘米;不在阳光下或暗光下阅读;在公交车和躺在床上时不要看书;每天做眼保健操.

解答 (71)in every ten.细节理解题.根据第一段"It is reported that nearly three in every ten students wear glasses."可知,据报道,大约有十分之三的学生戴眼镜.故填 in every ten.
(72)time.细节理解题.根据第一段"Many students often keep reading for long under poor light"可知,很多学生经常在光线不好的环境下长时间阅读.keep reading for long 相当于keep reading for a long time.故填time.
(73)distance.细节理解题.根据第二段"we should read under soft light with the book about 30cm from our eyes."可知,我们应该在柔和的光线下阅读,并且书要距离我们的眼睛30厘米.故填名词distance.
(74)poor.细节理解题.根据第二段"don't read in the sun or in the poor light."可知,不要再阳光下火光线暗的环境下读书.故填poor.
(75)exercises.细节理解题.根据第二段"do eye exercises every day."可知,每天做眼保健操.故填 exercises.

点评 通篇阅读,了解主题大意.阅读理解的答案均在文中,要抓住关键句子,关键单词来作答,没必要字字句句都懂.

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