【正文】 t they have with their retail banks and their mobile phone providers. I think they found it very useful and it also helped them identify just what kind of budgets they had too. The fact of the matter is that there39。d get paid and they39。t get our hands around.Q19. What do we learn about Sweden?Q20. What did Claer Barrett want to find out with her experiment?Q21. What did Claer Barrett find on her train ride?Q22. How did people of the last generation budget their spending?Passage 3Why should you consider taking a course in demography in college? You’ll be growing up in a generation where the baby boomers are going into retirement and dying. You will face the problems in the aging of the population that have never been faced before. You will hear more and more about migration between countries and between rural areas and cities. You need to understand as a citizen and as a tax payer and as a voter what’s really behind the arguments.I want to tell you about the past, present and future of the human population. So let’s start with a few problems. Right now, a billion people are chronically hungry. That means they wake up hungry, they are hungry all day, and they go to sleep hungry. A billion people are living in slums, not the same billion people, but there is some overlap. Living in slums means they don’t have infrastructure to take the garbage away, they don’t have secure water supplies to drink.Nearly a billion people are illiterate. Try to imagine your life being illiterate. You can’t read the labels on the bottles in the supermarket, if you can get to a supermarket. Twothirds of those people who are illiterate are women and about 200 to 215 million women don’t have access to birth control they want, so that they can control their own fertility. This is not only a problem in developing countries. About half of all pregnancies globally are unintended. So those are examples of population problems.Demography gives you the tools to understand and to address these problems. It’s not only the study of human population, but the populations of nonhuman species, including viruses like influenza, the bacteria in your gut, plants that you eat, animals that you enjoy or that provide you with meat. Demography also includes the study of nonliving objects like light bulbs and taxi cabs, and buildings because these are also populations. It studies these populations, in the past, present and future, using quantitative data and mathematical models as tools of analysis.I see demography as a central subject related to economics. It is the means to intervene more wisely, and more effectively in the real world, to improve the wellbeing, not only of yourself important as that may be but of people around you and of other species with whom we share the planet.Questions 2325 are based on the recording you have just heard.23. What is one of the problems the speaker mentions in his talk?24. What does the speaker say about pregnancies?25. How does the speaker view the study of populations?傾聽，歲月吹奏長笛，叮咚流韻，悠悠靡音。踏波無浪，攜手聚集靈氣，惠風(fēng)庭前守望?！　★L(fēng)舞天涯極光，月下裊娜，醉醒守望蔓坨。杯盞，斟下一彎月鐮，拂去憂愁煩惱，與云霧朦朧醉臥，與影對(duì)飲，翠幽。聆聽青春嫣然。登程人生，若即若離，云水禪心，未央別具一格。待，小荷風(fēng)情初竇，與天地之生靈，吟詠?！　⊙U裊炊煙，一宛悠然，馨暖徜徉，花前月下徘徊，天涯無痕?！　§o看月色，錦瑟未央，嬌羞情竇初開，醉飲一闕詩經(jīng)蒹葭。一彎柔情似水，秋水無痕。信鴿滑翔，風(fēng)翅逍遙，音律穿越，坐擁不老青春。杳杳訊息，鋪展羈旅，心境駕舟，紅塵泅渡，渡口歌者，匆匆駛過天籟。醉花蔭處，一箋風(fēng)語癡迷，沉香，沁脾。相約午夜，繾綣風(fēng)景，旖旎浪漫。編輯記憶，跋涉心靈軌跡，如夢(mèng)鼾聲，柔感情懷。譜一闕紅塵神曲，載渡。詩書充盈，短笛橫吹，歌賦旖旎，坐擁，永恒歲月……