Passage Eleven
Walking, if you do it vigorously enough, is the overall best exercise for regular physical activity. It requires no equipment, everyone knows how to do it and it carries the 1 risk of injury. The human body is designed to walk. You can walk in parks or along a river or in your neighborhood. To get 2 benefit from walking, aim for 45 minutes a day, an average of five days a week.
Strength training is another important 3 of physical activity. Its purpose is to build and 4 bone and muscle mass, both of which shrink with age. In general, you will want to do strength training two or three days a week, 5 recovery days between sessions.
Finally, flexibility and balance training are 6 important as the body ages. Aches and pains are high on the list of complaints in old age. The result of constant muscle tension and stiffness of joints, many of them are 7 , and simple flexibility training can 8 these by making muscles stronger and keeping joints lubricated （润滑）. Some of this you do whenever you stretch. If you watch dogs and cats, you’ll get an idea of how natural it is. The general 9 is simple: whenever the body has been in one position for a while, it is good to 10 stretch it in an opposite position.
Passage Twelve
French fries, washed down with a pint of soda, are a favorite part of fast-food lunches and dinners for millions of American youngsters. But 1 a cue from health experts, a group of 19 restaurant companies are pledging to offer more-healthful menu options for children at a time when 2 is growing over the role of fast food in childhood obesity （肥胖症）.
Burger King, the nation’s second-largest fast food chain, for instance, will 3 automatically including French fries and soda in its kids’ meals starting this month,although they will still be 4 . Instead, the company said Tuesday, its employees will ask parents whether they 5 such options as milk or sliced apples before assembling the meals. “We’re asking the customers to 6 what they want,” said Craig Prusher, the chain’s vice president of government relations. Other participating chains, with a 7 of menu options, include Denny’s, Chili’s, Friendly’s and Chevy’s.
As part of the Kids Live Well campaign—expected to be announced 8 Wednesday—participating restaurants must promise to offer at least one children’s meal that has fewer than 600 calories （卡路里）, no soft drinks and at least two 9 from the following food groups: fruits, vegetables, whole grains, lean proteins or low-fat dairy. Among other requirements, they must offer a side dish that meets similar 10 , with fewer than 200 calories and less than 35% of its calories from sugar.
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