首页
登录
职称英语
[originaltext] Today, I’m going to talk about the health problems related to
[originaltext] Today, I’m going to talk about the health problems related to
游客
2023-08-18
16
管理
问题
Today, I’m going to talk about the health problems related to sun-tan. Sun-tan is preferred by lighter-skinned people, especially during the summer months. They like to give their skin a nice natural bronze color with the help of sun-tanning. Getting a natural tan is the sign of being healthy and being attractive. No wonder many people rush off to the beach at the onset of summer with their tanning lotions and laze away on a towel for hours on end. The result is healthy tanned skin, which people like to flaunt all day long. People often believe that a perfectly tanned skin improves their personality and the texture of their skin. However, it is not advisable to be in direct sunlight for a long time. Excess exposure of the skin to sunlight can actually damage the skin, and is the leading cause of skin cancer all around the world. Moreover, in countries like Australia, the atmosphere does not filter the sun rays completely, as the Ozone layer in the atmosphere is depleting quickly. The Ozone layer is responsible for filtering the harmful ultra-violet or UV rays of the sun that can damage the skin beyond repair.
So what does a tan mean? A tan refers to exposure of the skin to the rays of the sun for a considerable amount of time. Common skin diseases can be treated with ultra-violet light. These are just some of the many positive effects that the sun offers in the form of its ultra-violet rays. You should take the advice of experts if you would like to go for a natural sun-tan. Different skins react differently to sunlight, and expert opinion should be sought, especially in the beginning. The UVB rays of the sun encourage the cells of the innermost layer of the skin, to produce more melanin pigments, which on their way to the outmost layer are tanned by the UVA rays of the sun. As a result, Vitamin D3 is produced naturally under the sun. The vitamin helps protect the bone and also protects us from diseases. The direct rays of the sun also make the immune system stronger against the invasion of germs, and increase the body’s overall physical powers. It has a positive effect on the functioning of the heart, and improves blood circulation.
23 What is the sign of getting a natural tan?
24 Why is the Ozone layer so important?
25 What is the specific function of Vitamin D3?
选项
A、It helps protect the bone and protects us from diseases.
B、It may protect the bone and cure some diseases.
C、It helps build up new bones and protects us from diseases.
D、It could build up new bones and cure some diseases.
答案
A
解析
录音最后维生素D3的作用,它能保护骨骼和免疫一些疾病。故答案为A项。
转载请注明原文地址:https://tihaiku.com/zcyy/2936026.html
相关试题推荐
[originaltext]Isyourfamilyinterestedinbuyingadog?Adogcanbeahap
[originaltext]Isyourfamilyinterestedinbuyingadog?Adogcanbeahap
[originaltext]Isyourfamilyinterestedinbuyingadog?Adogcanbeahap
[originaltext]Nomancanchangetheweather.Nobodycancontroltheweather
[originaltext]Nomancanchangetheweather.Nobodycancontroltheweather
[originaltext]W:MayIhelpyou?M:Yes,mywifeandIwanttotakeavacation
[originaltext]W:MayIhelpyou?M:Yes,mywifeandIwanttotakeavacation
[originaltext]M:We’rehavingadebateonadvertisingThursdayeveningandIha
[originaltext]M:We’rehavingadebateonadvertisingThursdayeveningandIha
[originaltext]Goodafternoon!TodayIwouldliketotalkabouttheUndergro
随机试题
TherewasatimewhenredmeatwasaluxuryforordinaryAmericans,orwasa
[originaltext](19)CountyfairsareatraditioninNewEnglandtowns.Theyo
下列选项中,属于组成国际收支平衡表基本项目的有()。A.经常项目 B.资本和
会计师事务所的下列与项目合伙人挑选及委派相关的做法中,不适当的是( )。A、对于
患者因贫血、长期低热、反复牙龈出血2个月就诊,经检查诊断为慢性型再障,首选的治疗
情志致病最易损失()。A.心肝肺B.心肝脾C.肝脾肾D.肺脾肾E.肝肺肾
53、十九大报告指出,制定国家监察法,依法赋予监察委员会职责权限和调查手段,用(
紧缩性财政政策包括()。A:减少财政赤字B:增加税收C:减少国债发行D:增
内容反应技术是指()A.将咨询师的意见如实相告 B.咨询师根据求助
公开招标是指招标采购人依法以招标公告的方式邀请特定的供应商参加招标。公开招标是政
最新回复
(
0
)