得到
  • 汉语词
  • 汉语典
当前位置 :
IfyouneedglassestoreadthisyouareamongthemajorityofChinesestudents.That’sbecausemoststudentsinChinaareshort-sightedwhichmeanstheycanonlyseethingscloseupanddistantthingswillbeblurry.Four-fifthsofhighs
1人问答
问题描述:

IfyouneedglassestoreadthisyouareamongthemajorityofChinesestudents.That’sbecausemoststudentsinChinaareshort-sightedwhichmeanstheycanonlyseethingscloseupanddistantthingswillbeblurry.Four-fifthsofhighschoolstudentswearglassesandnowmoreandmorechildreninprimaryschoolneedglassestoo.

Thisepidemicofpooreyesighthastwoverysimplecauses:toomuchtimespentindoorsstudyingandtoolittletimespentoutdoorsplaying.Readingandwritingforhoursandhourssometimesinpoorlylightedroomscauseseyesighttoweaken.Butstudentshavetodothisbecausethereissomuchpressureonthemtosucceedinschool.Andbecausetheyspendsomuchtimeindoorsatschoolandathometheyhavelesstimetospendoutdoorsenjoyingthesun.

Thesunasaconsequenceisimportantindevelopinggoodeyesight.Exposuretodaylightreleasesachemicalintheeyesthatpreventsoratleastdelaysshort-sightedness.AccordingtoastudybyIanMorganofAustralianNationalUniversityAustralianchildrenandChinesechildrenhavethesamelevelofeyesightbeforetheystartschoolbutoncetheyenterprimaryschoolChinesechildrenonlyspendaboutanhouradayoutsidewhileAustralianchildrenspendthreetofourhourseachdayinthesunshine.Theresultisthatwhileabout40percentofChineseprimaryschoolstudentsneedglassesonlythreepercentofAustralianchildrendo.

Wearingglassesmaynotseemlikeabigdeal.Forsomewearingglassescanevenbeanopportunitytomakeafashionstatement.Butpooreyesightatayoungagecanhaveseriouslongtermconsequences.Asyougetolderyoureyesightcanworsenandleadtothingslikemaculardegeneration(黄斑变性)aconditionoftheeyesforwhichthereisnocureandwhichcaneventuallyleadtoblindness.

Withallthatinminddon’tyouthinkit’stimetogiveyoureyesabreak?Tryspendingalittlelesstimeinsideandgoforawalkintheparkinstead.It’sthehealthythingtodoandyoureyeswillthankyouforit.

1.Whatdoestheunderlinedword“blurry”mean?

A.unpopular.B.unpleasant.

C.unclear.D.unconscious.

2.Howshouldthestudentsprotecttheireyesightaccordingtothepassage?

A.Theyshouldstudylessandless.

B.Theyshouldstaylongeroutdo

林云寰回答:
  1.C2.B3.B4.D分析:这是一篇说明文。介绍了导致视力下降的两种常见原因以及保护视力的最佳方式:多参加户外活动,多晒太阳。1.2.故选B。3.issomuchpressureonthemtosucceedinschool.“在学校,为...
英语推荐
最新更新
优秀英语推荐
PC端 | 移动端 | mip端
百百课(baibeike.com)汇总了汉语字典,新华字典,成语字典,组词,词语,在线查字典,中文字典,英汉字典,在线字典,康熙字典等等,是学生查询学习资料的好帮手,是老师教学的好助手。
声明:本网站尊重并保护知识产权,根据《信息网络传播权保护条例》,如果我们转载的作品侵犯了您的权利,请在一个月内通知我们,我们会及时删除。

邮箱:  联系方式:

Copyright©2009-2021 百百课 baibeike.com 版权所有 闽ICP备2021002822号-13