8.Early in the morning,at noon,or in the evening in big cities and in the countryside,all across the United States,you can see Americans running.The(1)
and the old are running.People run(2)
.Through Central Park(3)
New York,down quiet streets in small towns or at the gym.Some people even run in(4)
living rooms. Running didn't use to be so popular.In the 1960s,runners were(5)
athletes,healthy and strong people.In those days,when people saw a runner,they used(6)
, "Hey,what's the hurry for?" or they might say to(7)
, "Is he crazy?" Women almost never(8)
.If they did,they might hear a man shout, "If I(9)
you,can I keep you?" But today all these things have(10)
.Men and women of all(11)
enjoy running. Doctors think many health problems in the United States(12)
these bad habits:eating too much,smoking cigarettes,and exercising(13)
.Doctors told us, "Eat less,don't smoke,and exercise more." Running is a good way to exercise(14)
it helps people build strong hearts and lungs (肺).It also helps most people(15)
weight.In order to keep healthy,let's run together.