2022下半年英语六级听力常考时文：Sunscreens May Leave Skin...

2022-11-29 08:28:00来源：网络

【好课】新东方英语六级精品课 | 【优惠】六级名师网课 | 六级名师免费课
【六级报考】六级考试报名时间|入口 | 六级准考证打印时间|入口 | 六级成绩查询时间|入口
【六级备考】六级阅读技巧大全 | 六级翻译技巧大全 | 六级作文精选汇总 | 历年六级真题及答案

　　新东方在线英语六级频道为大家整理了2022下半年英语六级听力常考时文：Sunscreens May Leave Skin Vulnerable to UV，备考六级的同学可以收藏，预祝大家高分通过大学英语六级考试。

　　2022下半年英语六级听力常考时文：Sunscreens May Leave Skin Vulnerable to UV

　　1.What can molecules in sunscreens do to the skin over time? They can ... the skin.

　　2.What is the correct way to use a sunscreen? To ... on the skin.

　　3.How often is it recommended to use sunscreens? Every ...

　　Unless sun lovers continually reapply sunscreen, agents in the sunscreen itself can attack the skin and leave the body susceptible to ultraviolet radiation, researchers say. Scientists at the University of California at Riverside have found that molecules that block UV radiation in sunscreen can, over time, penetrate into the skin, leaving the outer body vulnerable.Kerry Hanson, a research scientist in the Department of Chemistry at UCR, said that sunscreens do an excellent job protecting against sunburn when used correctly.This means using a sunscreen with a high sun protection factor and applying it uniformly on the skin. However, Hanson pointed out that their data showed that if coverage at the skin surface was low, the UV filters in sunscreens that had penetrated into the epidermis could potentially do more harm than good. Unprotected skin exposed to UV radiation generates harmful compounds called reactive oxygen species or ROS. These molecules can react with cells, membranes and DNA, causing skin damage and signs of aging. Hanson's research team found that three UV filters widely used in sunscreens generate ROS when skin is exposed to UV radiation. Only a few UV-filters are capable of blocking UV-A, the wavelengths that penetrate deeply into the skin. "For now, the best advice is to use sunscreens and reapply them often — the Skin Cancer Foundation recommends every two hours, and especially after sweating or swimming, which can wash away sunscreen — to reduce the amount of UV radiation from getting through to filters that have penetrated the skin. This, in turn, would reduce ROS generation." said Christopher Bardeen, an assistant professor of chemistry at UCR.

　　以上就是为大家整理的“2022下半年英语六级听力常考时文：Sunscreens May Leave Skin Vulnerable to UV”内容供大家学习，希望能够对大家有所帮助。

新东方英语四六级优惠好课↓↓↓

课程名称	课程亮点	试听
【小班课】英语四六级零基础无忧计划	1V1答疑	免费试听
【零基础】四六级全科专项突破	单项全面进阶	免费试听
【阅读】四六级阅读高分技巧	双师精讲阅读	免费试听
【写作】四六级写作万能模板	双师精讲写作	免费试听
【听力】四六级听力高分技巧	双师精讲听力	免费试听
【全程班】英语四六级全程班100%返现	考前冲分快准狠	免费试听
了解更多四六级课程