【正文】 s such as diabetes at younger ages. The killers today can be classed as “l(fā)ifestyle diseases”, which means that it may be possible to halt their progress. Who Wants to Live Forever?誰想永生？ If your doctor could give you a drug that 如果你的醫(yī)生能給你一種藥，這個藥能讓你健康的活兩倍長的時間，你會服用嗎？好消息是我們離這一天越來越近了。 An allied benefit is the low taxation or plete lack of it. This increases the amount of pay received by visiting workers and is very popular with them. Sometimes a disadvantage has a pensating example, the difficult living conditions often lead to increased friendship when workers have to depend on each other for safety and a similar way, many migrant workers can save large sums of money partly because of the lack of entertainment facilities. The work is often plex and full of problems but this merely presents greater challenge to engineers who prefer to find solutions to problems rather than do routine work in their home country. One major problem which affects migrant workers in the Middle East is that their jobs are temporary ones. They are nearly always on contract, so it is not easy for them to plan ahead with great confidence. This is to be expected since no country weles a large number of foreign workers as permanent residents. In any case, migrant workers accept this disadvantage, along with others, because of the considerable financial benefits which they receive. Dreams Everyone can dream. Indeed, everyone does dream. Those who claim that they never dream at all actually dream just as frequently as the rest of us, though they may not remember anything about it. Even those of us who are perfectly aware of dreaming night after night very seldom remember those dreams in great detail but1 merely retain an untidy mixture of seemingly unrelated impressions. Dreams are not simply visualwe dream with all our senses so that we appear to experience sound, touch, smell, and taste. One of the world’s oldest known written documents is the Egyptian Book of Dreams. This volume is about five thousand years old, so you can see that dreams were believed to have a special significance even then, Many ancient civilizations believed that you should never wake a sleeping person as, during sleep, the soul had left the body and might not be able to return in time if the sleeper were suddenly awoken . From ancient times to the present day, people have been making attempts to interpret dreams and to explain their significance. There are many books available on the subject of dream interpretation, although unfortunately there are almost as many meanings for a particular dream as there are books. Scientists Develop Ways of Detecting Heart Attack German researchers have e up with a new generation of defibrillators and earlywarning software aimed at offering heart patients greater protection1 from 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 are caused by disruption to the heart’s rhythm. Those most at risk are patients who have already suffered a heart attack, and for years the use of defibrillators has proved useful in diagnosing lifethreatening disruptions to heart rhythms and correcting them automatically by intervening within seconds. These devices take on a range of functions, such as that of pacemaker. Heart specialists at Freiburg’s University Clinic have now achieved a breakthrough with an implanted defibrillator capable of generating a sixchannel electrocardiogram ( ECG) within the body. This integrated system allows early diagnosis of acute bloodflow 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 puter software that renders the evaluation of ECG data more precise. The overwhelming majority of patients at risk will not have an implanted defibrillator and must for this reason undergo regular ECGs. “Many of the current programs only take into account a linear correlation of the data. We are, however, making use of a nonlinear process that reveals the chaotic patterns of heart beats as an open and plex system,” Hagen Knaf says, “In this way 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 upon 600 patients who had suffered a subsequent heart attack, enabled the researchers to pare risks and to show that the new software evaluates the data considerably better. Young Adults Who Exercise Get Higher IQ Scores Young adults who are fit have a higher IQ and are more likely to go on to university， reveals a major new study carried out at the Sahlgrenska Academy and Sahlgrenska University Hospital. The results were recently published in the Proceedings of the National Academy of Sciences (PNAS). The study involved million Swedish men doing military service who were born between 342 mess microscopic M 1950 and 1976. The research group analyzed the results of both physical and IQ tests the youngsters took right after they started serving the army. The study shows a clear link between good physical fitness and better results for the IQ test. The strongest links are for logical thinking and verbal prehension. But it is only fitness that plays a role in the results for the IQ test， and not strength. “ Being fit means that you also have good heart and lung capacity and that your brain gets plenty of oxygen，” says Michael Nilsson, professor at the Sahlgrenska Academy and chief physician at the Sahlgrenska University Hospital. “ This may be one of the reasons why we can see