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
外语
A、Because it protects you from getting sunburnt. B、Because it helps you get a perfectly tanned skin. C、Because it’s in charge of
A、Because it protects you from getting sunburnt. B、Because it helps you get a perfectly tanned skin. C、Because it’s in charge of
admin
2017-06-29
42
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. [23]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. [24]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. [25]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、Because it protects you from getting sunburnt.
B、Because it helps you get a perfectly tanned skin.
C、Because it’s in charge of filtering the harmful sun rays.
D、Because it repairs your skin that damaged by the sunlight.
答案
C
解析
问题问为何臭氧层如此重要。录音中提到,臭氧层负责过滤太阳光中有害的紫外线。由此得出C项为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/PVU7777K
0
大学英语六级
相关试题推荐
ItiscommonlybelievedintheUnitedStatesthatschooliswherepeoplegotogetaneducation.Nevertheless,ithasbeensaid
TheInternetandInternetuserscanbetargetsforhackers.Hackersarepeoplewhousetheircomputerstogain【B1】______access
A、Watchherpartner.B、Playhercardsincooperationwithherpartner.C、Quitthegame.D、Teachthemanhowtoplaybridge.A女士说
A、Becauseitgivespeopleasenseofachievement.B、Becausemostpeoplelikedoingiteveryday.C、Becauseitisneitherbiochem
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,therewilleventuallynotbeenoughresourcesleftto【B1】
A、Membershipinafoodco-op.B、Thebenefitsofhealthfood.C、Shoppinginthesupermarket.D、Thecurrentcostoffood.A对话开门见山地
Newtechnologylinkstheworldasneverbefore.Ourplanethas【B1】______.It’snowa"globalvillage"wherecountriesareonlys
A、5%.B、10%.C、15%.D、20%.B男士说可以给女士的折扣是10%。故答案是B。从选项可猜测题目与数字细节有关。数字细节题,要边听录音边做好笔记。要注意数字出现时相关联的信息,并留意题目问的问题。听完问题后,可排除没有在对话中提到的A和
A、Theydidn’tcelebrateitatall.B、TheycelebrateditasaHebrewfestival.C、Theycelebrateditasthedeathandresurrection
A、Itwillmakethemistakesfamiliartous.B、Itwillhelpustofixpastmistakes.C、Itwillhelpustorealizeourresolutions
随机试题
计算,其中D为圆环:π2≤χ2+y2≤4π2。
其他投资支出的内容有(),为可行性研究购置固定资产的费用;购买或自行开发无形资产的费用,递延资产。
针对审计业务变更为审阅业务或相关服务业务的要求,以下说法中,错误的是()。
甲、乙、丙、丁四人先后来到一个农场工作。甲说:“我刚到农场时,在玉米地旁种了十几棵桃树。”乙说:“我刚来时正赶上农场附近新修公路,把桃树林都砍了。”丙说:“农场的玉米都是我种的。”丁说:“我刚到的第一天,正赶上摘桃,树上的桃又大又甜。”据此判断,四人来到农
为规范各部院政务活动、保障其正常运转,清朝针对中央各部门的职责、办事规程而制定的基本行政规则是
Geographyisthestudyoftherelationshipbetweenpeopleandtheland.Geographerscompareandcontrast【C1】______ placesonthe
WhatisLorraineMelvill’sbusiness?
A、Morepeoplecometoenjoymuseums.B、Morepeoplefeartoexperiencenewthings.C、Manyoldpeoplearepuzzledbymodernexhibi
A、Highwaycrime.B、Poortrafficcontrol.C、Confusingroadsigns.D、Drivers’errors.D
A、Shecoulddriveacarthoughshewasovereighty.B、Sheviolatedthetrafficrulesbutescapedbeingcaught.C、Shehadneverm
最新回复
(
0
)