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. 1. ________
People run everywhere — along the beaches, through the park, down quiet streets or at the gym（体育馆）. Some people even run in their living rooms.
2. ________
In the 1960s, most runners were athletes and healthy and strong people. In those days, when people saw a runner, they could say, “Hey, what's the hurry for?” Or they might say to themselves, “Is he crazy?” 3. ________
If they did, they might hear a man shout, “If I catch you, can you buy me a drink?” But today all these have changed. Men and women of all ages enjoy running.
Doctors say many of the health problems in the United States come from these bad habits — eating too much, smoking cigarettes and not exercising enough. Doctors tell us, “Eat less, don't smoke and exercise more.” 4. ________
It also helps most people lose weight.
A. As a result, people in the past had all kinds of health problems.
B. That usually made women feel worried and scared.
C. Men and women, young people and old people are running.
D. Running is good exercise because it helps get strong hearts and lungs（肺）.
E. Women almost never ran.
F. Running wasn't so popular in the past

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