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
The speech tells us that to solve the problem of getting sunburned, we should
The speech tells us that to solve the problem of getting sunburned, we should
admin
2009-06-24
84
问题
The speech tells us that to solve the problem of getting sunburned, we should
Today we’ll go on to the second part of the "Skin Protection Series". Last time I said something about the importance of keeping our skin clean, and today I’ll give a talk on sunburn, followed by a talk on skin diseases next week.
Sunburn is a very common skin problem, especially in summer. The rays of sunlight are of several different kinds. Some of them, called actinic rays, cause the chemical changes that make photography possible and also cause your skin to become red and burned if you are exposed to them too long. Serious sunburns often occur at the beaches and on snow-covered mountains, where the glare of the sun is reflected back from the sand and water or snow and ice. Other rays of sunlight, called ultraviolet rays, supply needed Vitamin D to your body. Therefore it is helpful to your health to be in the sunlight but dangerous or at least unpleasant if you overexpose to the actinic rays which causes the condition known as sunburn. Hazy days also are dangerous, because the sunlight can burn the skin even when it has to come through clouds.
The problem is solved by exposing the body to sunlight gradually, for example, 15 minutes the first day, and a few minutes more each day after that, until the skin has a brown appearance that is called a suntan.
People with fair skins have to be much more careful than people with darker skins. Children and babies have very tender skin that burns easily.
If a person does get a sunburn he or she should stay out of the sun. A soothing dressing, applied to the burned skin, may help to relieve the pain.
选项
A、the sunlight is fiercer at the beaches than elsewhere.
B、the skin gets the glare of the sun reflected back from the water and sand.
C、the ultraviolet rays there are much stronger.
D、the sunlight can also get through the cloud.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/G8Td777K
本试题收录于:
公共英语五级笔试题库公共英语(PETS)分类
0
公共英语五级笔试
公共英语(PETS)
相关试题推荐
TrafficinOurCitiesThevolumeoftrafficinmanycitiesintheworldtodaycontinuestoexpand.Thiscausesmanyproblems,
AlargecrowdassembledoutsidetheAmericanembassy
GlobalWarmingFewpeoplenowquestiontherealityofglobalwarminganditseffectsontheworld’sclimate.Manyscientists
A.pedestriansB.NorthAmericaC.customersD.abadexperienceE.MiddleEasterncountriesF.furnituresellersShopkeepersm
AdaptationofLivingThingsCertainanimalsandplantsdevelopcharacteristicsthathelpthemcopewiththeirenvironmentbe
WhatisSunsetSongmainlyabout?Theword"Sunset"inthetitleofthisnovelmostprobablymeans
Foreignmilitaryaidwasprolongingthewar.
Whatdoesthepassagemainlydiscuss?Whatcolorfilterwouldabsorbredwavelengths?
Foreignmoneycanbeconvertedintothelocalcurrencyatthisbank.
Comparedwithadultslearningaforeignlanguage,childrenlearntheirnativelanguagewithease.Plentyofpracticeinlisteni
随机试题
在高速公路上遇到紧急情况避险时需注意什么?
每日需铁量最多的人是
收益现值法的应用程序?
配送中心设置在接近顾客的地方,在接到顾客的订货后提供及时的供货,而且可以一次满足多品种的订货。()
给定资料1.徐女士儿子三岁多了,正好到秋季入园的年龄。可是2010年出生的虎宝宝太多了,她家一个楼道六户人家就有五个虎宝宝。为此,从去年下半年起,徐女士就开始作打算。“但是,现在幼儿园普遍都是名额爆满价格普涨。公立园收费虽然相对较低,但赞助费从几
请根据图(a)所示网络结构回答问题。(1)填写路由器RG中相关的路由表项(2)如果在不改变路由表项的前提下,在路由器RF最多可再连接的路由器数量是【7】。(3)如果图(a)中防火墙FW为CiscoPIX525,要求允许内网的FTP服务器
In1971therewereabout3,700millionpeopleintheworld.Ifthepopulationwere【C1】______evenlyovertheearth’ssurfacet
Inrecentyears,railroadshavebeencombiningwitheachother,mergingintosupersystems,causingheightenedconcernsaboutmo
Inthissectionyouarerequiredtowriteanessayinaccordancewiththefollowingrequirements:1.Tide:OnBusinessmen’s
Todaywomenearnalmost60percentofallbachelor’sdegreesandmorethanhalfofmaster’sandPh.D.’s.Manypeoplebelieveth
最新回复
(
0
)