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人工心脏起搏器编码的第3个字母代表
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Despite wars, famines, and epidemics, Earth’s population is booming ahead to new records—with no end in sight. Every day, the world adds enough people to populate a medium-sized city in the US. In one month, the number of new-world citizens equals the population of New York City. Every year, there are 90 million more mouths to feed, more than the total population of Germany. Several factors are propelling this rapid growth, including an element that is often overlooked: the huge number of teenagers who are becoming mothers, particularly in the countries of sub-Saharan Africa. In four African nations—Niger, Mali, Sierra Leone, and Ivory Coast—1 out of every 5 adolescent females of childbearing age has a baby annually. The US Bureau of the Census says this high rate of motherhood among teens has helped to maintain the high pace of births across most of the African continent. By starting a family early, a typical woman in Somalia, for instance, has seven children during her lifetime. Equally large-families are the rule in Zambia, Zaire, Uganda, Mauritania, Mali, Malawi, and Ethiopia. The current record-holder for fertility is strife: torn Rwanda, where a typical mother has at least eight or nine children. While population experts often focus on Africa’s problems, analysts note that teenage mothers are also far more prevalent in the United States than in France, Germany, Italy, Sweden, or Britain. This issue—"babies having babies"—has recently gained prominence in the US. Teenaged motherhood in the US has fueled an expansion of the state-federal welfare system and brought cries for welfare reform from lawmakers. With its high rate of teen births, the US now ranks alongside Indonesia and parts of South America, and only modesty ahead of Mexico, India, and Pakistan. Overall, the fertility rate among Americans remains relatively low at 2.1 births per woman—about the replacement level. Although the US population is expected to climb steadily, from 260 million today to 323 million by 2020, most of that growth will come from immigration. The Census Bureau estimates that in Haiti, where thousands of citizens are trying to flee to the US because of military oppression and poverty AIDS will cut the annual growth rate during the next 25 years from 2.1 percent to 1.3 percent. The decline in growth is even sharper in the Central African Republic, where rates will dip from 2.4 percent to 0.7 percent. In Thailand, which already had low birth rates, AIDS will drive population downward to 0.8 percent a year. In the 16 countries that are hit hardest, AIDS will lower populations by 121 million over expected projections by 2020. In Africa, the impact of AIDS is so great that trends toward longer fife spans during the past 40 years are being reversed. Some nations will suffer declines in average life spans of 10 to 30 years compared with expected life spans without AIDS. In the US, where AIDS is also a substantial problem, the impact will be lower because the disease is mostly limited to homosexuals and drug users, says Peter Way, a Census Bureau researcher. In many African nations, AIDS is prevalent among the heterosexual population, which sharply boosts infant mortality. A compelling chapter in the research deals with aging. Today the median age in developed countries is 35, and in developing nations is only 23. By 2020, the corresponding figures will be 42 and 28. Today there are fewer adults over 60 (525 million) than children under 5 (636 million). As the world population ages, by 2020, the number over 60 will be more than 1 billion, while those under 5 will total 717 million. What can bring about the rapid growth of population in America
为了寻求对自己有利的法律保护；神码电子公司可以行使什么权利对谁行使为什么
Questions 16 to 20 are based on the following talk.
根据所给资料，回答下列问题。2010年全国完成税收总收入73202亿元，同比增收13681亿元，比上年同期增速加快了13.2个百分点。2010年增值税收入21091.95亿元，同比增长14.1%，比上年同期增速加快了11.4个百分点。2010年成品油、原油和煤炭行业增值税同比分别增长73.2%、39.7%和29.7%。2010年消费税收入6017.54亿元，同比增长27.5%，比上年同期增速回落了57.9个百分点。分产品看，国内消费税的增收主要集中在汽车、卷烟和贵重首饰三类产品，同比分别增长55.8%、32%和29%。2010年营业税收入11157.64亿元，同比增长23.8%，比上年同期增速加快了5.6个百分点。分行业看，保险业、房地产和建筑业营业税收入快速增长，同比分别增长37.8%、32.4%和30.7%2010年企业所得税收入12842.79亿元，同比增长11.3%，比上年同期增速加快8.1个百分点。全年工业企业缴纳所得税5168.85亿元，同比增长40.4%，房地产企业缴纳所得税同比增长50%。2010年个人所得税收入4837.17亿元，同比增长22.5%。 2010年全国增值税比2009年增长了约多少亿元（）
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