Heat Is Killer

Extremely hotweather is common in many parts of the world.Although hot weather just makesmost people feel hot,it can______(51)serious medical problems-even

death.Floods,storms,volcanoemptions and other nati iral_______(52)kill thousands of people everyyear.So______(53)extreme heat.Experts say heat may be nature's

deadliestkiller.Recently,extreme heat was blamed______(54)killing more than one hundredpeople in India.It is reported that the total heat of a hot day or several days

can_______(55)health.

Several hot days areconsidered a heat wave.Experts say heat waves often become dangerous when thenighttime temperature does not_______(56)much from the highest

daytimetemperature.This causes great stress on the human body．

Doctors say peoplecan do many things to_______(57)themselves from the dangers of extremeheat.Stay out of the sun,if possible.Drink lots of cool water.Wear lightcolored

clothingmade______(58)natural materials;avoid wearing synthetic clothing.Make sure theclothing is______(59),permitting freedom of movement.And learn the

danger______(60)ofthe medical problems,such as headache and vomiting, that are linked toheat.Most people suffer only muscle pain as a(n)______(61)of heat stress.The

pain isa________(62)that the body is becoming too hot.Doctors say those sufferingheadache or muscle pain should stop all activity,rest in a cool place and drinkcool

liquids.Do notreturn to physical _______(63)for a few hours because more serious conditionscould develop.

Doctors say somepeople face an ______(64)danger from heat stress.Such persons have a weak ordamaged heart,high blood pressure,or other problems of the blood system.

Hot weather alsoincreases dangers for people who must take_______(65)for high blood pressure,poor blood flow,nervousness or depression.53._________

A.does

B.doesn't

C.do

D.don't