首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
专升本
Sunglasses can help your eyes in two important ways. They improve the normal light filtering abilities of your eyes and they pro
Sunglasses can help your eyes in two important ways. They improve the normal light filtering abilities of your eyes and they pro
admin
2007-12-30
90
问题
Sunglasses can help your eyes in two important ways. They improve the normal light filtering abilities of your eyes and they protect against the sun’s damaging rays. Good sun glasses will reduce strong light, filter out(滤除)99 to 100 percent of ultraviolet( UV)rays(紫外线) , provide visual protection, comfortable and not distort colors.
The UV rays in sunlight can damage your eyes, some of the damage can be immediate while some occurs over a life time of exposure.
Good quality sunglasses help to protect your eyes from harmful UV radiation. It is generally agreed that the less UV rays that get through, the better. Experts recommend that to protect your eyes from harmful rays, your sunglasses should block 99 to 100 percent of both UV-A and UV-B rays. Furthermore, lenses should block at least 70 percent of visible light but even this can vary with the situation. In areas where light is strong such as at the beach or on snow, as little as 10 to 15 percent of transmission is better.
Selecting the right sunglasses is an important choice to protect your eyes and your vision(视力) . When selecting sunglasses for children, keep the following suggestions in mind.
Check the sunglasses often to make sure they fit well and are not damaged. Children often don’t tell about their vision even when there’s a problem, so a regular check may be necessary.
Select sunglasses that suit children’s active lifestyles. The glasses should be impact (冲撞) resistant, and the frames should be bendable, unbreakable. Children’s sunglasses should never be made of glass, unless required by their eye doctors.
The lenses should be large enough to protect the eyes from most angles ( above, below and either side) and to block light that gets in around the frames. The sunglasses should fit the child’s nose, to reduce the amount of sunlight that enters the eyes.
How can sunglasses reduce the amount of sunlight entering children’s eyes?
选项
答案
The lenses should be large enough to protect the eyes from most angles and to block light that gets in around the frames. The sunglasses should also fit the children’s nose.
解析
转载请注明原文地址:https://kaotiyun.com/show/WLLC777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
试证
Manypeoplekeeptheir______(save)inbanks.
Historianscan’ttelluswhen,whereor【71】thefirstfoodwascooked.Inearliest【72】whenpeoplehadeatentheirfood【73】,
Acontractisanagreementbetweentwoormorepeople【71】onepersonagreestodosomethingbyaspecifieddateinreturnfors
Inthe______ofmanyparents,standardsofeducationinthepublicschoolareactuallyfalling.
Someyearsagothecaptainofashipwasveryinterestedinmedicine.Healwaystookmedicinebookstoseaandlikedtotalkabo
Itwouldbedifficulttohaveasocietylikeourswithoutpublicgoodssuchasdefense,transportation,andotherservices.
Lookingatthecloudymorningsky,themountainclimbersdecidedtoputofftheplan______thenextweekend.
(非英语类学生必做)Summerswithfatherwerealwaysenjoyable.Swimming,hiking,boating,fishingthedayswerenotlongenoughtoco
随机试题
某企业经批准从2007年1月1日起发行2年期面值为100元的债券10000张。发行价格确定为面值发行。债券年利率为6%(实际利率与合同利率一致),每年7月1日和1月1日为付息日。该债券所筹集资金全部用于新生产线的建设,该生产线于2008年6月底完工交付使用
少数急性有机磷中毒患者发生中间综合征,其出现时间为
系统性红斑狼疮患者的皮肤护理,下列哪项不妥?()
对于持有和买卖上海证券交易所上市证券的投资者,未办理指定交易的投资者的证券暂由()托管,其红利、股息、债息、债券兑付款在办理指定交易后可领取。
请用不超过150字的篇幅,概括出给定资料所反映的主要问题。用不超过350字的篇幅,提出解决给定资料所反映问题的方案。要有条理地说明,要体现针对性和可操作性。
首要特质
论信息系统项目的需求管理和范围管理在信息系统项目的开发过程中,人们越来越体会到需求管理和范围管理的重要性,含糊的需求和范围经常性的变化使信息系统项目的甲乙双方吃尽了苦头,这使得人们急于寻找良策以管理范围。请围绕“需求管理和范围管理”论题,分
假定当前盘符下有两个如下文本文件:文件名a1.txta2.txt内容123#321#则下面程序段执行后的结果为#include"stdio.h"voidfc(FILE
Shewantstoapplyforanewjobasherpresentjobisnot(interest)______.
TheWonderfulWorldofSmallThere’saquietrevolutiongoingon,anditsnameisnanotechnology.Ahostofinnovationsare
最新回复
(
0
)