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Heat Is KillerExtremely hot weather is common in many parts of the world. Although hot weather just makes most people feel hot, it can 1 serious medical problems—even death. Floods, storms, volcano eruptions and other natural 2 kill thousands of people every year. So 3 extreme heat. Experts say heat may be nature"s deadliest killer. Recently, extreme heat was blamed 4 killing more than one hundred people in India. It is reported that the total heat of a hot day or several days can 5 health. Several hot days are considered a heat wave. Experts say heat waves often become dangerous when the nighttime temperature does not 6 much from the highest daytime temperature. This causes great stress on the human body.Doctors say people can do many things to 7 themselves from the dangers of extreme heat. Stay out of the sun, if possible. Drink lots of cool water. Wear light colored clothing made 8 natural materials; avoid wearing synthetic clothing. Make sure the clothing is 9 , permitting freedom of movement. And learn the danger 10 of the medical problems, such as headache and vomiting, that are linked to heat. Most people suffer only muscle pain as a(n) 11 of heat stress. The pain is a 12 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 13 for a few hours because more serious conditions could develop.Doctors say some people face an 14 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 15 for high blood pressure, poor blood flow, nervousness or depression.

A. warning
B. inference
C. need
D. guidance

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Heat Is KillerExtremely hot weather is common in many parts of the world. Although hot weather just makes most people feel hot, it can 1 serious medical problems—even death. Floods, storms, volcano eruptions and other natural 2 kill thousands of people every year. So 3 extreme heat. Experts say heat may be nature"s deadliest killer. Recently, extreme heat was blamed 4 killing more than one hundred people in India. It is reported that the total heat of a hot day or several days can 5 health. Several hot days are considered a heat wave. Experts say heat waves often become dangerous when the nighttime temperature does not 6 much from the highest daytime temperature. This causes great stress on the human body.Doctors say people can do many things to 7 themselves from the dangers of extreme heat. Stay out of the sun, if possible. Drink lots of cool water. Wear light colored clothing made 8 natural materials; avoid wearing synthetic clothing. Make sure the clothing is 9 , permitting freedom of movement. And learn the danger 10 of the medical problems, such as headache and vomiting, that are linked to heat. Most people suffer only muscle pain as a(n) 11 of heat stress. The pain is a 12 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 13 for a few hours because more serious conditions could develop.Doctors say some people face an 14 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 15 for high blood pressure, poor blood flow, nervousness or depression.

A. food
B. medicine
C. water
D. meal

Heat Is KillerExtremely hot weather is common in many parts of the world. Although hot weather just makes most people feel hot, it can 1 serious medical problems—even death. Floods, storms, volcano eruptions and other natural 2 kill thousands of people every year. So 3 extreme heat. Experts say heat may be nature"s deadliest killer. Recently, extreme heat was blamed 4 killing more than one hundred people in India. It is reported that the total heat of a hot day or several days can 5 health. Several hot days are considered a heat wave. Experts say heat waves often become dangerous when the nighttime temperature does not 6 much from the highest daytime temperature. This causes great stress on the human body.Doctors say people can do many things to 7 themselves from the dangers of extreme heat. Stay out of the sun, if possible. Drink lots of cool water. Wear light colored clothing made 8 natural materials; avoid wearing synthetic clothing. Make sure the clothing is 9 , permitting freedom of movement. And learn the danger 10 of the medical problems, such as headache and vomiting, that are linked to heat. Most people suffer only muscle pain as a(n) 11 of heat stress. The pain is a 12 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 13 for a few hours because more serious conditions could develop.Doctors say some people face an 14 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 15 for high blood pressure, poor blood flow, nervousness or depression.

A. tight
B. loose
C. large
D. small

Nuclear Power and Its DangerNuclear power"s danger to health, safety, and even life itself can be summed up in one word: radiation.Nuclear radiation has a certain mystery about it, partly because it cannot be detected by human senses. It can"t be seen or heard, or touched, or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around us but we can"t detect them, sense them, without a radio receiver. Similarly, we can"t sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things.At very high levels, radiation can kill an animal or human being outright by killing masses of cells in vital organs. But even the lowest level of radiation can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be significant. This is the case when only a few cells are hit, and if they are killed outright. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They reproduce themselves in a deformed way. They can grow into cancer. Sometimes this does not show up for many years.This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the victim being aware at the time that damage has occurred. A person can be irradiated and feel fine, then die of cancer five, ten, or twenty years later as a result. Or a child can be born weak or liable to serious illness as a result of radiation absorbed by its grandparents.Radiation can hurt us. We must know the truth. Which of the following can be best inferred from the passage

A. The importance of protection from radiation cannot be over-emphasized.
B. The mystery about radiation remains unsolved.
Cancer is mainly caused by radiation.
D. Radiation can hurt those who are not aware of its danger.

Heat Is KillerExtremely hot weather is common in many parts of the world. Although hot weather just makes most people feel hot, it can 1 serious medical problems—even death. Floods, storms, volcano eruptions and other natural 2 kill thousands of people every year. So 3 extreme heat. Experts say heat may be nature"s deadliest killer. Recently, extreme heat was blamed 4 killing more than one hundred people in India. It is reported that the total heat of a hot day or several days can 5 health. Several hot days are considered a heat wave. Experts say heat waves often become dangerous when the nighttime temperature does not 6 much from the highest daytime temperature. This causes great stress on the human body.Doctors say people can do many things to 7 themselves from the dangers of extreme heat. Stay out of the sun, if possible. Drink lots of cool water. Wear light colored clothing made 8 natural materials; avoid wearing synthetic clothing. Make sure the clothing is 9 , permitting freedom of movement. And learn the danger 10 of the medical problems, such as headache and vomiting, that are linked to heat. Most people suffer only muscle pain as a(n) 11 of heat stress. The pain is a 12 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 13 for a few hours because more serious conditions could develop.Doctors say some people face an 14 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 15 for high blood pressure, poor blood flow, nervousness or depression.

A. signs
B. designs
C. traits
D. points

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