共用题干 Heat Is KillerExtremely hot weather is common in many parts of the world.Although hot weather just makes most people feel hot,it can______(51)serious medical problems-even death.Floods,storms,volcano emptions and other nati iral_______(52)kill thousands of people every year.So______(53)extreme heat.Experts say heat may be nature's deadliest killer.Recently,extreme heat was blamed______(54)killing more than one hundred people in India.It is reported that the total heat of a hot day or several days can_______(55)health.Several hot days are considered a heat wave.Experts say heat waves often become dangerous when the nighttime temperature does not_______(56)much from the highest daytime temperature.This causes great stress on the human body．Doctors say people can do many things to_______(57)themselves from the dangers of extreme heat.Stay out of the sun,if possible.Drink lots of cool water.Wear light colored clothing made______(58)natural materials;avoid wearing synthetic clothing.Make sure the clothing is______(59),permitting freedom of movement.And learn the danger______(60)of the medical problems,such as headache and vomiting, that are linked to heat.Most people suffer only muscle pain as a(n)______(61)of heat stress.The pain is a________(62)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 _______(63)for a few hours because more serious conditions could develop.Doctors say some people face an ______(64)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_______(65)for high blood pressure, poor blood flow,nervousness or depression. 51._________
A.cause B.make C.affect D.form正确答案A
