夏天真的来了,昨天的天气预报又发布了高温蓝色预警。在此,请大家学习一下《中暑的相关知识与急救措施》,这不仅仅是一篇英文的科技文阅读,也是你在生活中要掌握的实用技巧!
What is heatstroke?
Heat exhaustion is a collection of symptoms brought on as the body struggles to control its temperature. Left untreated, heat exhaustion can progress to a more severe form known as heatstroke.
The body normally uses several mechanisms to cool itself down, including directing more blood to the skin and by sweating. Everyone sweats. Most people lose more than a litre of sweat a day. In hot weather or during exercise, when the muscles generate large amounts of heat, they sweat even more heavily - losing large amounts of water and salts. If the body loses too much liquid or salt, the symptoms of heat exhaustion develop.
If someone with heat exhaustion continues to be exposed to high temperatures, the more serious and life-threatening condition of heatstroke may develop.
In this situation, the body becomes dangerously dehydrated. Its cooling mechanisms malfunction and are no longer able to assist the body in losing enough heat, so the body temperature starts to rise.
Symptoms
The symptoms of heat exhaustion include:
Excess sweating
Nausea and vomiting
Feeling light-headed/faint
Tiredness
Headache
Muscle cramps
With heatstroke, the temperature of the body rises and the following symptoms may occur:
Confusion
Disorientation
Rapid and shallow breathing
Fits
Causes and risk factors
Anyone can develop heat exhaustion and heatstroke, although some people are more at risk than others. These include:
Small babies, children and older people, who have less efficient body cooling systems.
People suffering from diarrhoea, who are more likely to become dehydrated.
People from cooler climates who travel to hotter climates, as it may take a while for their bodies to get used to the heat. Being in areas of high humidity also increases a persons risk, as this reduces the efficiency of sweating and decreases the amount of heat lost from the body.
People with certain medical conditions that reduce the efficiency of the bodys cooling mechanisms. For example diabetes, obesity and chronic heart failure.
Those who drink excessive amounts of alcohol, which dehydrates the body.
六级阅读“三遍法”
英文歌曲之I'm not the only one
生活中的美 Beauty in Life
体坛资讯:Federer into French Open final as Davydenko nerve fails
国际英语资讯:Virus strain discovered in Australia could cause worldwide gastroenteritis outbreak
2016大学英语六级新题型听力解读
Nadal beats Hewitt to reach French final
英文歌曲之Your firefly
2017年托福考试时间表
体坛资讯:Real blundered over treatment of Beckham, says Capello
托福口语真题:描述物品
China name Sudirman cup squad
与烘焙相关的俚语
China beat Ghana to enter semifinals in Toulon
Unlucky 13 as Mauresmo fails again
四级听力技巧之学会比较
TT Worlds: Guo Yue crowned, top three vying for mens title
托福3个月养成计划
托福口语之语段朗读法
体坛资讯:Nadal bags French Open hat-trick
体坛资讯:China storm into semis, S. Korea pose strong in Sudirman Cup
英文歌曲之Hallelujah
如何用好托福机经
China determined to defend title at Sudirman Cup
英文歌之Happy
英语六级作文三大定律
Henin extends win streak at French Open
China sweeps board in TT Worlds, Wang Liqin crowned
China nails second gold in table tennis championships
托福口语中的20个否定句例子
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |