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完型填空：(共20小题,每小题1分,满分20分) A Early in the morning, at noon, or in the evening in big cities and in the countryside, all over the United States, you can see Americans runningmen and women, young and old.People run 16along the beaches of California, 17 Central Park in New York, down quiet streets in small towns or at the gym.Some people even run in 18 living rooms. Running wasnt so popular in the past.In the 1960s, runners were mostly athletes and healthy strong people.When people saw a runner, they used 19 ,Hey, whats the hurry for?or they might say to 20 ,Is he crazy?At that time, women almost never ran.If they did, they might be laughed at.But today all these have 21 . Men and women of all 22 enjoy running. Doctors say many of the health problems in the United States 23 these bad habits: eating too much, smoking cigarettes, and taking 24 exercise.Doctors tell us,Eat less, dont smoke, and exercise more.Running is a good exercise 25 it helps build strong hearts and lungs.It also helps most people lose weight. 16.A.anywhereB.somewhereC.everywhereD.nowhere 17.A.amongB.throughC.withD.on 18.A.ourB.yourC.hisD.their 19.A.to askingB.to speakC.to speakingD.to ask 20.A.themB.themselvesC.theirD.they | 
