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为你的上司Denny写一封致歉信给Smith先生。内容如下：非常抱歉，星期三我无法赴约。因家里有急事，我得离开上海，至少要周末才能返回。我一回来就会给您的秘书打电话，另行安排见面时间。给您带来的诸多不便，深表歉意。
If you want to stay young, sit down and have a good think. This is the research finding of a team of Japanese doctors, who say that most of our brains are not getting enough exercise and as a result, we are aging unnecessarily soon. Professor Taiju Matsuzawa wanted to find out why otherwise healthy farmers in northern Japan appeared to be losing their ability to think and reason at a relatively early age and how the process of aging could be slowed down. With a team of colleagues at Tokyo National University, he set about measuring brain volumes of a thousand people of different ages and varying occupations. Computer technology enabled the researchers to obtain precise measurements of the volume of the front and side sections of the brain, which relate to intellect and emotion, and determine the human character. The rear section of the brain, which controls functions like eating and breathing, does not contract with age, and one can continue living without intellectual on emotional faculties (功能). Contraction of front and side parts—as cells die off—was observed in some subjects in their thirties, but it was still not evident in sixty-and seventy-year-old. Matsuzaswa concluded from his tests that there is a simple remedy to the contraction normally associated with age—using the head. The findings show in general terms that contraction of the brain begins sooner in people in the country than in the towns. Those least at risk, says Matsuzawa, are lawyers, followed, by university professors and doctors. White collar workers doing routine work in government offices are, however, as likely to have shrinking brains as the farm worker, bus driver and shop assistant.Matsuzawa’’s findings show that thinking can prevent the brain from thinking. Blood must circulate properly in the head to supply the fresh oxygen the brain cells needed. "The best way to maintain good blood circulation is through using the brain." he says, "Think hard and engage in conversation. Don’’t rely on pocket calculators." The team of doctors wanted to find out________.
Where is the library
专家认为，如果汽车技术行业经过长年的研发能降低3%的油耗，就可以算是非常显著的研究成果了；但即使是能降低3%的油耗，对实际生活中的消费者来说也不太明显。而且汽车生产厂家在不影响加速动力性的情况下，已经在尽量省油．目前生产的汽车在节油和动力方面的效果已经达到了最佳配置比。 根据这段话．以下说法正确的是( )。
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