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  3. Heat Is Killer Extremely hot weather is common in many parts of the world. Although hot weather just makes most people feel

Heat Is Killer Extremely hot weather is common in many parts of the world. Although hot weather just makes most people feel

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问题                             Heat Is Killer
    Extremely hot weather is common in many parts of the world. Although hot weather just makes most people feel hot, it can【C1】______serious medical problems—even death. Floods, storms, volcano eruptions and other natural【C2】______kill thousands of people every year. So【C3】______extreme heat. Experts say heat may be nature’ s deadliest killer. Recently, extreme heat was blamed【C4】______killing more than one hundred people in India. It is reported that the total heat of a hot day or several days can【C5】______health. Several hot days are considered a heat wrave. Experts say heat weaves often become dangerous when the nighttime temperature does not【C6】______much from the highest daytime temperature. This causes great stress on the human body.
    Doctors say people can do many things to【C7】______themselves from the dangers of extreme heat. Stay out of the sun, if possible. Drink lots of cool water. Wear light colored clothing made【C8】______natural materials; avoid wearing synthetic clothing. Make sure the clothing is【C9】______, permitting freedom of movement. And learn the danger【C10】______of the medical problems, such as headache and vomiting, that are linked to heat. Most people suffer only muscle pain as a(n)【C11】______of heat stress. The pain is a【C12】______that the body is becoming too hot. Doctors say those suffering headache or muscle pain should stop all activity, rest in a cool place and drink cool liquids. Do not return to physical【C13】______for a few hours because more serious conditions could develop.
    Doctors say some people face an【C14】______danger from heat stress. Such persons have a weak or damaged heart, high blood pressure, or other problems of the blood system.
    Hot weather also increases dangers for people who must take【C15】______for high blood pressure, poor blood flow, nervousness or depression.
【C13】
选项 A、act
B、activity
C、action
D、acting
答案B
解析 activity意思是“活动”，physical activity意为体力活动，符合句意。act行为，行动；action行动；acting演戏。
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