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阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。 Scientists Develop Ways of Detecting Heart Attack German researchers have (1) a new generation of defibrillators and early warning software aimed at offering heart patients greater protection (2) sudden death from cardiac arrest. In Germany alone around 100,000 people die annually as a result of cardiac arrest and many of these cases (3) by disruption to the heart’s rhythm. Those most at risk are Patients who have (4) suffered a heart attack and for years the use of defibrillators has proved useful in diagnosing (5) disruptions to heart rhythms and correcting them automatically by intervening within seconds. These devices (6) a range of functions such as that of pacemaker. Heart specialists at Freiburg’s University Clinic have now achieved a breakthrough with all implanted defibrillator (7) of generating a six-channel electrocardiogram(ECG) within the body. This integrated system allows early diagnosis of (8) blood-flow problems and a pending heart attack. It will be implanted in patients for the first time this year. Meanwhile, researchers at the Fraunhofer Institute for Applied Mathematics in Kaiserslautern have developed new computer software that renders the evaluation of ECG data (9) . The overwhelming (10) of patients at risk will not have an implanted defibrillator and must for this reason undergo regular ECGs. "Many of the current programs only (11) into account a linear correlation of the data. We are, however, making use (12) a non-linear process that reveals the chaotic patterns of heart beats as an open and complex system." Hagen Knaf says." (13) changes in the heart beats over time can be monitored and individual variations in patients taken into account." An old study of ECG data, based (14) 600 Patients who had suffered a subsequent heart attack, enabled the researchers to compare risks and to show (15) the new software evaluates the data considerably better.
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假定美国与荷兰的利率分别为12%、8%，即期汇率为1美元等于1.6500荷兰盾，三个月的远期汇率为1美元等于1.6300荷兰盾。如果不考虑交易成本等因素的影响，假定套利者有荷兰盾的闲置资金，那么他将会如何套利这种活动对汇率的影响如何
阅读下面的短文，文章中有5处空白，文章后有6组文字，请根据文章的内容选择5组文字，将其分别放回文章原有的位置，以恢复文章原貌。请将答案填在相应的横线上。 Why Do Many Female Athletes Fall Victim to Knee Injuries Rebecca Lobo, a basketball star, grabbed a rebound during the first seconds of game in June 1999. (1) . A pain shot from her knee and drove Lobo to the floor. Tests revealed that Lobo had tom her anterior cruciate (十字的,交叉的) ligament (韧带), or ACL, resulting in the end of her play for the season. (2) . Lobo, perhaps the most recognized player in the United States, is one of a growing number of female athletes suffering ACL injuries. Experts say that female athletes in middle school, high school, college and professional sports may be eight times as likely as male athletes to experience ACL injury. (3) . Why are so many female athletes falling victim to ACL injuries Sports physicians say one reason is the growing number of females involved in high-impact sports, such as soccer and basketball. Jeff Bauer, a biochemist, however, thinks bone size plays a key role. He examined the knee joints of skeletons of 200 humans who had died at an early age. Studies of the skeletons of 100 males and 100 females showed in measurement after measurement that the bones making up a female’s knee are smaller than those of a male of the same size. Smaller bone surfaces may lead to an increase in stress placed on the ACL during sharp movements, such as turning, jumping, or stopping. Bauer thinks the size difference may be the primary reason that females injure their knees more often than males do with the same amount of training and experience. "Now, that’s not bad, "adds Bauer, "and it’s not good. It’s just different." Following the knee injury, Lobo underwent surgery. (4) . After the surgery, the patient needs months of physical therapy to strengthen the knee muscles and ligaments. Eight months after having knee surgery, the patient still needs to exercise her knee every day. (5) . They also recommend that players do stretching exercises before a game or a practice to help keep the knees flexible and more able to withstand stress during play. A. When she landed, she tried to stand firm but couldn’t. B. One of the more common techniques used to repair a torn ACL involves replacing the entire ligament. C. Sports injury experts say knee exercises may help protect knees from ACL injury. D. Practice before and after a game is a good way to avoid injuries to knees. E. Thousands of female athletes have suffered a fate similar to Rebecca’s. F. The ACL is a short band of tissue that keeps the knee stable during movement.
阅读下面这篇短文，短文后有2项测试任务：(1)1～4题要求从所给的6个选项中为第 2～5段每段选择1个正确的小标题：(2)第5～8题要求从所给的6个选项中选择4个正确的选项，分别完成每个句子。请将答案写在相应的位置上。 Optimists Really Do Live Longer, Say Scientists 1. For the philosopher Arthur Schopenhauer optimism was fundamentally wrong banal and corrupting, while the father of psychoanalysis Sigmund Freud simply declared it to be neurotic. 2. Experience shows that looking on the bright side of life does have advantages and recent scientific evidence points to the positive mindset(思想倾向) as being beneficial to health. In other words optimists live longer. 3. That was the conclusion reached by experts at the Mayo Clinic in the US State of Minnesota who evaluated answers given by people to a set of questions in the 1960s. Of the 729 candidates, 200 had died and according to scientists, there were a disproportionate number of pessimists among them. 4. The points more on the pessimism scale-that was the difference between "slightly pessimistic" and "averagely pessimistic"-were enough to boost a person’s chances of dying by 19 percent, according to the study by prominent psychologist Martin Seligman of the University of Pennsylvania. 5. The study does not say why pessimists die but an older survey taken among children in SanFrancisco and Los Angeles makes it clear that personal attitude towards the world is a key factor in the longevity equation. 6. The latest evidence to support the theory that optimists tend to cope better with illness of all kinds has been provided by professor Ralf Schwarzer of Berlin’s Free University who questioned 600 heart and lung patients. His conclusion: optimists recover more swiftly from operations than their pessimistic counterparts, tend to be happier after treatment and return to work more swiftly. 7. There have been suggestions that optimists do not stay healthier but rather turn into optimists later because they enjoy good health. Numerous surveys have taken into account a person’s state of health at the outset (最初) and the effect remains the same. 8. Studies have shown that optimists do not blind themselves to reality either. They thus interpret it in a positive way. "Sublimating (vi.升华) and denying things tend to alter reality but illusions are a way of seeing reality in the best light," said California. 9. German science journal Bild der Wissenschaft, which carries a major article on the topic in its current March issue, commented on "the right attitude" to having a tumor. 10. It seems psychotherapy can go some way towards extending the life span and life quality of a sick person although a complete recovery using psychological technique alone is unlikely. 11. Doctors like, however, to point to the example of US cycling professional Lance Armstrong, who was seriously ill with cancer, but whose unshakeable optimism helped him to take the top trophy twice at cycling’s premiers Tour de France. 12. The magazine also quoted a study by Sheldon Cohens of the Caregie Mellon University in Pittsburgh: 420 volunteers were deliberately infected with strains of various common cold viruses. A day later checks were carried out to see who had caught a cold. 13. The results showed that in the case of people who had satisfactory, long-term relations with friends, neighbors or colleagues, the virus was less likely to trigger a cold. Of people with three of fewer firm relationships 62 percent became ill compared with only 35 percent of those who had six or more close human links. Paragraph 8______.
现在公历的某月某日与那天是星期几是随年份变化的。例如，你去年生日那天是星期日，但今年的生日就不是星期日了。如果约定：每年的1月1日是星期日，全年有52个完整的周，共364天；普通年的最后一天和闰年的最后两天不属于任何一周。 根据上述约定，则以下哪项一定为真 Ⅰ如果某人结婚的那天是星期日，则他的结婚纪念日都是星期日。 Ⅱ如果某人的第一个工休日是星期日，并且必须连续工作六天后休息一天，则他的每个工休日都是星期日。 Ⅲ如果某人的第一个工休日是星期日，并且必须连续工作六天后休息一天，则他的每个工休日都不是星期日。
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