阅读表达（每小题2分，满分10分）
Walking is a popular form of exercises. It is an easy activity and offers a good way to improve physical fitness. Walking also gives many of the same benefits as other kinds of exercises.
Regular, brisk（轻快地）walks helps a person’s body work better. Walking builds a stronger heart and lungs. The heart pumps blood through the body. It gets more rest between beats. Walking also seems to help protect the heart from heart diseases. Walking can help lose weight, too. What’s more, walking causes very few injuries, which is why there is a lower “dropout” rate among walkers than among runners. People are more likely to continue a walking program. This gives a better chance for success.
Walking offers some mental benefits, too. It seems to make people feel better. Many walkers say they sleep better at night when they take regular walks. Others say they have a better attitude about life.
Walking offers many of the same physical and mental benefits as other forms of exercise, but walking offers some special advantages, too.
★ Almost everyone can walk. There are no special lessons of coaching. To become a serious walker, a person only needs to walk faster, farther and more often.
★ People can walk almost anywhere. There are no special playing fields or courts for walking. Sidewalks, streets, parks, fields and malls are excellent places for walking.
★ People can walk almost anytime. A person doesn’t need a team or a partner for walking. There is no “season” for walking. Most walkers walk in all kinds of weather.
Walking offers a form of exercise within the reach of nearly everyone. With a little time and effort, people can rediscover a valuable form of exercise and improve their fitness.
What’s the best title of the passage?（within 10 words）
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Please explain the underlined word “dropout” with proper words or phrases.（within 5 words）
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Why is there a lower dropout rate among walkers than among runners? （within 10 words）
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How can people become a more serious walker? (within 10 words)
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Which do you prefer, walking or jogging? Why? (within 15 words)
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