题型:阅读理解 题类:常考题 难易度:困难
河北省武邑中学2019届高三上学期英语期末考试试卷(含小段音频)
Humans and many other mammals have unusually efficient internal temperature regulating systems that automatically maintain stable core body temperatures(核心体温)in cold winters and warm summers. In addition, people have developed cultural patterns and technologies that help them adjust to extremes of temperature and humidity(湿度).
In very cold climates, there is a constant danger of developing hypothermia(低体温), which is a life threatening drop in core body temperature to below normal levels. The normal temperature for humans is about 37.0℃. However, differences in persons and even the time of day can cause it to be as much as 6℃ higher or lower in healthy individuals. It is also normal for core body temperature to be lower in elderly people. Hypothermia begins to occur when the core body temperature drops to 34.4℃. Below 29.4℃, the body cools more rapidly because its natural temperature regulating system usually fails. The rapid decline in core body temperature is likely to result in death. However, there have been rare cases in which people have been saved after their temperatures had dropped to 13.9—15.6℃. This happened in 1999 to a Swedish woman who was trapped under an ice sheet in freezing water for 80 minutes. She was found unconscious, not breathing, and her heart had stopped beating, yet she was eventually saved despite the fact that her temperature had dropped to 13.7℃.
In extremely hot climates or as a result of uncontrollable infections, core body temperatures can rise to equally dangerous levels. This is hyperthermia. Life threatening hyperthermia typically starts in humans when their temperatures rise to 40.6—41.7℃. Only a few days at this extraordinarily high temperature level is likely to result in the worsening of internal organs and death.
Summer holidays are coming. Here are two posters for members of English Club in the schoolyard:
Science and Technology Museum Opening hours Sunday—Wednesday 10:00am—5:30pm Charge:$5 What's on Ancient Technology—the ground floor Modern Technology— the first floor Space —the second floor The silk road: trade and travel — the second floor Please note The museum is closed for 3 days during the Spring Festival every year. Contact us Information desk:73238299 Email:stm99@163.com |
To all climbers! Place: Castle Peak Indoor Climbing Centre Date: 8: 30 am, July, 15 Sign in when you come to the centre. Climb with a partner. Wear a hard hat at all times. Wear the correct climbing shoes. Don't eat or drink anywhere except in the café. Don't listen to personal music players while climbing. Don't light fires. Good practice: Use a locker to store your things. Wear loose, comfortable clothing. Wearing jewellery can cause accidents. Talking on a mobile phone while climbing can be dangerous. |
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