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发布时间:2024-07-13 22:47:12

[简答题]

Although you’ll probably live longer than you imagine, don’t count on being healthier. The need for and the cost of health care typically increase dramatically as you age. On average, for example, a 40-year-old man consumes about $2,000 a year in health care services, whereas a typical 75-year-old consumes five times that much. That’s why, as the population ages, huge inflationary pressures are put on the health care system. How big will those pressures be in the next century Over the past 40 years, health care costs have risen an average of 70 percent faster than the general rise in prices—and that was before the boomers (新定居的人) started to gray. The federal government predicts that by 2030, as boomers enter their 70s and 80s, health care spending will top $16 trillion, representing nearly 1 out of every 3 dollars in the economy. Who will pay the bill No one knows for sure, but it’s a good guess that the next century’s elderly will become res

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[简答题]

Although you’ll probably live longer than you imagine, don’t count on being healthier. The need for and the cost of health care typically increase dramatically as you age. On average, for example, a 40-year-old man consumes about $2,000 a year in health care services, whereas a typical 75-year-old consumes five times that much. That’s why, as the population ages, huge inflationary pressures are put on the health care system. How big will those pressures be in the next century Over the past 40 years, health care costs have risen an average of 70 percent faster than the general rise in prices—and that was before the boomers (新定居的人) started to gray. The federal government predicts that by 2030, as boomers enter their 70s and 80s, health care spending will top $16 trillion, representing nearly 1 out of every 3 dollars in the economy. Who will pay the bill No one knows for sure, but it’s a good guess that the next century’s elderly will become res

[简答题]Passage Five
Although you’ll probably live longer than you imagine, don’t count on being healthier. The need for and the cost of health care typically increase dramatically as you age. On average, for example, a 40-year-old man consumes about $ 2 000 a year in health care services, whereas a typical 75-year-old consumes five times that much. That’s why, as the population ages, huge inflationary pressures are put on the health care system.
How big will those pressures be in the next century Over the past 40 years, health care costs have risen an average of 70 percent faster than the general rise in prices -- and that was before the boomers started m grow old. The federal government predicts that by 2030, as boomers enter their 70s and 80s, health care spending will top $16 trillion, representing nearly 1 out of every 3 dollars in the economy.
Who will pay the bill No one knows for sure, but it’s a good guess that the next century’s elder
[填空题]Small dogs generally live longer than big dogs so that yappy Yorkshire terrier next door could be around for a long time. But body size isn’t the only factor that (36) how long dogs survive. Personality influences life span, too, according to a new study that might help explain how animal (37) evolve.
Research on animals from ants to apes has found that different (38) have different personalities. Some are timid, others (39) . Biologists have proposed that temperaments evolved along with life history. (40) , violent animals use a lot of energy fast in (41) short lives, the thinking goes, whereas calmer animals last longer, saving themselves to (42) later in life.
But it’s hard to run evolutionary (43) on these personalities in anything longer lived than a fruit fly. So evolutionary biologist Vincent Careau of Universit6 de Sherbrooke in Canada came up with an idea: dogs. "All these breed differences reflect an experiment on

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