题目内容

Directions:In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices,Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2with a single line through the center. You may not use any of the words in the bank more than once.You may know that the world's population is aging-that the number of older people is expanding faster than the number of young-but you probably don't realize how fast this is happening. Right now, the world is 1divided between those under 28 and those over 28. By midcentury, the median age will have risen to40. Demographers(人口统计学家) also use another measure，in addition to median age，to 2whether populations are aging: "elder share". If the share, or 3of people over 60(or sometimes 65)is growing, the population is aging. By that yardstick too, the world is quickly becoming older. Pick any age cohort above the median age of 28 and you'll find its share of the4population rising faster than that of any segment below the median. By 2018, 65-year-olds, for example, will outnumber those under 5-a historic first. In 2050. developed countries are on5to have half as many people under 15 as they do over 60. In short, the age mix of the world is turning upside down and at unprecedented rates.This means6 change in nearly every important relationship we have ----as family members, neighbors, citizens of nations and the world. Aging populationsalso7 how business is done everywhere. The globalization of the economyis 8 because the world is rapidly aging, and at the same time the pace of global aging is quickened by the speed and scope of globalization. These intertwined dynamics also bear on the international 9for wealth and power. The high costs of keeping our aging population healthy and out of 10 has caused the United States and other rich democracies to lose their economic and political footing. Countries on the rise amass wealth and geopolitical clout by refusing to bear those costs. Older countries lose work to younger countries.A. trackB. proportionC. competingD. alterE.obligationF. global G. competitionH. possiblyI.determineJ. acceleratingK.trace L.evenlyM. povertyN. averageO. profound

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