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When researchers come up with a new treatment that makes us feel or work better, it’s usually not just the truly sick who end up going in for an upgrade. The progress in developing treatments for illnesses that ravage memory and thought raises an important question: might the same tools be used to improve the functioning of minds that by most standards are already running fairly smoothly We may well be approaching an era of designer brains, in which those of us feeling a little foggy or dull can have our IQ, fast recall, and self-confidence inflated up via the prescription pad. "Some brain-related conditions we think of as ordinary, "says one researcher, "may eventually become disorders, too" —including perhaps less-than-razor-sharp thinking. The notion of a prescription IQ lift is hardly new. According to polls, about one in 20 college students, and higher percentages of professors, already illicitly pop some form of Ritalin or Modafinil—legitimately prescribed for attention-deficit disorder and narcolepsy (嗜睡症), respectively—to augment alertness, concentration, and memory. But these drugs have proved only mildly effective on normal minds, and carry potentially severe side effects ranging from addiction to overstimulation. Scientists had originally hoped that the decoding of the human genome would lead quickly to small groups of genes that control major mental disorders and traits, be they Alzheimer’s disease (老年痴呆症), intelligence, or personality. That hasn’t been the case; individual genes turn out in most cases to only weakly affect the brain, with most illnesses emerging from the interaction of large, complex networks of hundreds of genes. That challenge hasn’t kept researchers from tracking down many of the genes in these networks to chip away at the genetic roots of mental disorders—and to come up with possible treatments based on some of those findings. The result is that medicine may allow us to challenge our genetic inheritance and repair environmental insults to the brain, whether as Alzheimer’s sufferers or just moody, forgetful people and hazy thinkers. Techniques undergoing testing now include altering genes within brain cells, or even pushing genes into creating altogether new brain cells. Neurologix in Fort Lee, New Jersey, for example, is developing brain-related gene therapies, which involve injecting harmless viruses that insert custom-built genes into cells. Though other experimental gene therapies have in the past often caused severe and even fatal side effects, Neurologix hopes to avoid them by targeting the viruses only at those cells that need repairing. In Fact, We won’t necessarily have to turn to these more radical therapies to sharpen our thinking. The genetic and other new scientific insights into the brain are also helping to point the way to new drugs targeted at brain disorders—drugs that may also end up being taken as smart drugs by many of us without serious disorders. The passage mainly talks about ______.
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When researchers come up with a new treatment that makes us feel or work better, it’s usually not just the truly sick who end up going in for an upgrade. The progress in developing treatments for illnesses that ravage memory and thought raises an important question: might the same tools be used to improve the functioning of minds that by most standards are already running fairly smoothly We may well be approaching an era of designer brains, in which those of us feeling a little foggy or dull can have our IQ, fast recall, and self-confidence inflated up via the prescription pad. "Some brain-related conditions we think of as ordinary, "says one researcher, "may eventually become disorders, too" —including perhaps less-than-razor-sharp thinking. The notion of a prescription IQ lift is hardly new. According to polls, about one in 20 college students, and higher percentages of professors, already illicitly pop some form of Ritalin or Modafinil—legitimately prescribed for attention-deficit disorder and narcolepsy (嗜睡症), respectively—to augment alertness, concentration, and memory. But these drugs have proved only mildly effective on normal minds, and carry potentially severe side effects ranging from addiction to overstimulation. Scientists had originally hoped that the decoding of the human genome would lead quickly to small groups of genes that control major mental disorders and traits, be they Alzheimer’s disease (老年痴呆症), intelligence, or personality. That hasn’t been the case; individual genes turn out in most cases to only weakly affect the brain, with most illnesses emerging from the interaction of large, complex networks of hundreds of genes. That challenge hasn’t kept researchers from tracking down many of the genes in these networks to chip away at the genetic roots of mental disorders—and to come up with possible treatments based on some of those findings. The result is that medicine may allow us to challenge our genetic inheritance and repair environmental insults to the brain, whether as Alzheimer’s sufferers or just moody, forgetful people and hazy thinkers. Techniques undergoing testing now include altering genes within brain cells, or even pushing genes into creating altogether new brain cells. Neurologix in Fort Lee, New Jersey, for example, is developing brain-related gene therapies, which involve injecting harmless viruses that insert custom-built genes into cells. Though other experimental gene therapies have in the past often caused severe and even fatal side effects, Neurologix hopes to avoid them by targeting the viruses only at those cells that need repairing. In Fact, We won’t necessarily have to turn to these more radical therapies to sharpen our thinking. The genetic and other new scientific insights into the brain are also helping to point the way to new drugs targeted at brain disorders—drugs that may also end up being taken as smart drugs by many of us without serious disorders. What does the first sentence of the passage imply
(一) 某项目进展到第10周后，对前9周的工作进行了统计检查，有关统计情况见下表。 前9周成本统计 工作代号 计划完成预算成本BCWS/元 已完成工作(%) 实际发生成本ACWP/元 已完成工作的预算成本BCWP/元 A 420000 100 425200 B 308000 80 246800 C 230880 100 254034 D 280000 100 280000 9周末合计 1238880 1206034 问题 计算前9周每项工作的BCWP。
Just as the Corporate cowboys of the 1970s destroyed the reputation of the corporations they headed, and engaged in grand scale self indulgence at corporate expense, now Australia is in the era of the campus cowboy (and female counterpart). They too overstate the performance of their product and corporation, and indulge in grand scale self indulgence, despite their claims of academic excellence and projecting a holier ’than holy image. Academics are put under various pressures to drop the standard of university education so that more students are retained through to graduation, thereby maximizing the revenue collected by governments of both persuasions and the more revenue handed back to the universities to fund the outrageous perquisites of senior management at those institutions. Australian universities artificially boost student numbers by accepting many Australians who should not be allowed within 100 kilometers of a university on the grounds of their intellectual rigor and/or lack of diligence and by actively recruiting full fee paying overseas students. Despite increased HECS fees, lecturers have been instructed to neglect their teaching in favor of research which generates further university revenue. Both tactics by Australian universities have resulted in a dumbing down of Australian tertiary (高等的) education. Sure the courses look good on paper, but how they are administered results in the massive abandonment of educational standards. For example, in some cases, students can pass a subject having scored only 30% on the final exam. In some instances, the English of the overseas students is limited and lecturers have trouble understanding what students are trying to say. They are under pressure to pass the student in order to retain them as cash cows. Lecturers are under so much pressure from their university managers that they employ tactics such as giving the students the exam questions and answers before the exam giving ’mock’ exams and answers that are the same as the ’real’ exam and setting only the simplest of questions (which are similar to questions students have already done in tutorials. Why aren’t various parties doing something about the situation Students don’t complain because they get their qualification and higher grades with less work. Lecturers complain but bow to the pressure imposed on them because they have mortgages to pay, families to feed and a career investment in tertiary education. Universities win because lower standards and easier success means more students will come back to do higher degrees—a win-win situation Professions which employ large groups of graduates don’t complain because the system produces more ’qualified’ graduates for employers to choose from, thus forcing down salaries and generating more revenue for the profession’s administrators from increased numbers of people undertaking postgraduate professional exams necessary for admittance to the relevant profession. Similar to Corporate cowboy in the 1970, now there is an emergence of ______ in education in Australia.
Agriculture is undoubtedly the most important sector in the economies of most non-oil exporting African countries. It (62) about 30% of Africa’s GDP and contributes (63) 50% of the total export value, (64) 70% of the continent’s population depending on the sector for their (65) . Production is subsistence in nature with a high (66) on the rain. The debate on climate change and its impacts on agriculture is (67) very crucial to the very survival of the continent and its people. The continent is particularly (68) to climate change because it includes some of the world’s poorest nations. The climate in Africa is (69) tropical in nature, which is broadly (70) into three main climatic zones: (71) equatorial, dry, and temperate(温带). Within these zones, altitude and other localized (72) also produce distinctive regional climates. Climate change, (73) indicated by prolonged drought is one of the most serious climatic (74) affecting the agricultural sector of the continent. As most of the agriculture activities in African countries hinges on rain fed, any adverse changes in the climate would likely have a (75) effect on the sector in the region. (76) changes in the climate may affect the whole continent, its (77) may vary across the continent. In northeast Africa, more intense dry periods and shorter wet seasons are expected to affect even huge river systems such as the Blue Nile, leading to serious water shortages and (78) consequences to the agriculture and forestry sectors throughout the region. East and Central Africa will also see its agricultural (79) decline. Coastal areas may also be affected by rising sea levels and intrusion of salt water into inland freshwater resources. The staple food for the region, maize, is particularly susceptible to drought. Wetlands of international importance and wildlife are also under threat from (80) in Southern Africa. Climate change, therefore, is expected to worsen the food supply, (81) , exacerbate the widespread poverty in the region.
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