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　　Very hot weather is common in many parts of the world．Although hot weather just makes most people hot, it can cause medical problems and death．

　　Floods, storms and other terrible natural events kill thousands of people every year．And we hear much about them in news reports．We generally hear little about heat, which experts say may be nature's most dangerous killer．

　　Health experts say that since the year 1900, very hot weather has killed more people in the United States than any other natural event．One year-the unusually hot summer of 1980 heat caused about 1, 700 deaths in the United States．In 1995, more than 600 people died in another heat wave in one city-Chicago, Illinois．

　　Besides drinking lots of cool water, doctors say there are some other things to do to protect against the health dangers of heat．Stay out of the sun, if possible．Wear loose(寬松的)and light-colored clothes．Wear a hat while in the sun．Eat fewer hot and heavy foods．And, when possible, cook foods during cooler time of the day．If possible, rest more often．

　　Health experts say these simple steps can prevent the dangerous health problems caused by heat．They will prevent sickness, help you feel better and may even save your life．

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完形填空：

　　The sun is shining and it's very hot．So 　　1　　 people don't want to go out after 　　2　　．But it's time for Mrs．West 　　3　　 her classmate at the bus stop．Because her classmate 　　4　　 comes to visit her before and doesn't know the way．

　　Now she's walking in the street．, There 　　5　　 no trees and she 　　6　　 very hot．But she's too 　　7　　 and can't walk fast(快的)．Suddenly she finds a boy 　　8　　 behind her．When she walks fast, the boy walks fast, too．She is 　　9　　．She asks “ 　　10　　 are you walking behind me, boy? ” “It's cool．” the boys answers．

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