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U. S. Blacks Hard-hit by Cancer Death rates for cancer are falling for all Americans, but black Americans are still more likely to die of cancer than whites, the American Cancer Society said Monday In a special report on cancer and blacks, the organization said blacks are usually diagnosed with cancer later than whites, and they are more likely to die of the disease. This could be because of unequal (不平等的) access to medical care, because blacks are more likely to have other diseases as well, and perhaps because of differences in the biology (生物学) of the cancer itself, the report added. "In general, black Americans have less hope of surviving five years after diagnosis than whites for all cancer sites and all stages of diagnosis," the report said. "In describing cancer statistics for black Americans, this report recognizes that many of the differences associated with race may be caused by unfair social and economic differences and unequal access to medical care." The cancer society said blacks should be encouraged to get check-ups (体格检查) earlier, when cancer is more treatable, and it said more research is needed to see if biological differences play a role. "The new statistics emphasize the continuing importance of wiping out these unfair social differences through public policy and education efforts," the organization said in a statement. But it also noted a drop in cancer death rates. "Cancer death rates in both sexes for all sites combined have dropped greatly among black Americans since 1992, as have incidence rates (发生率) ," said the report. Cancer is more treatable if it is detected______.
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执行以下程序段后，变量c＄的值是______。 a＄="北京" b＄="Shanghai" c＄=Left(a＄，2)+String(3，"-")+Right(b＄，8)
案例分析题二、根据以下资料，回答106-110题 改革开放以来，某省从业人员总量伴随经济增长而持续增加，城乡就业规模不断扩大。就业结构经过调整逐步合理，从业人员素质逐步提高，城镇登记失业率稳中有降，成功地解决了经济结构调整以及城市化进程中的就业问题。至2007年底，某省从业人员总量达到2015.33万人，比1978年底增加1090.92万人，年均增长2.7%，全省从业人员占全省总人口比重比1978年上升了18.5个百分点，达到56.3%。其中，全省城镇从业人员数673.26万人，比1978年增长了2.26倍。仅2001-2007年7年间就增加251.16万人，占1978年以来增加人数的53.8%。从2003年以来，城镇登记失业率持续下降，2007年全省城镇登记失业率为3.9%，比2002年低0.3个百分点，比全国同期平均水平低0.1个百分点。人员素质显著提高。全省国有企事业单位专业技术人员从1978年的8.41万人增加到2007年的62.38万人。1982年至2007年，大专及以上文化程度的人口占总人口的比重从0.6%上升到4.8%，高中(含中专)人口所占比重从5.7%上升到12.0%，而文盲、半文盲人口比重从25.2%下降到到10.0%。人员素质的提高，专业技术人员的增加，为全省经济建设奠定了良好的基础。 根据文中资料，不能得出的结论是( )。
分光光度法分析的基本依据是物质对光的吸收作用。
Why do you listen to music If you should put this question to a number of people, you might receive answers like these: "I like the beat of music," "I look for attractive tuneful- ness," "I am moved by the sound of choral singing," "I listen to music for many reasons but I could not begin to describe them to you clearly." Answers to this question would be many and diverse, yet almost no one would reply, "Music means nothing to me." To most of us, music means something; it evokes some response. We obtain some satisfaction in listening to music. For many, the enjoyment of music does not remain at a standstill. We feel that we can get more satisfaction from the musical experience. We want to make closer contact with music in order to learn more of its nature; thus we can range more broadly and freely in the areas of musical style, form, and expression. This book explores ways of achieving these objectives. It deals, of course, with the techniques of music, but only in order to show how technique is directed toward expressive aims in music and toward the listener’’s musical experience. In this way, we may get an idea of the composer’’s intentions, for indeed, the composer uses every musical device for its power to communicate and for its contribution to the musical experience. Although everyone hears music differently, there is a common ground from which all musical experiences grow. That source is sound itself. Sound is the raw material of music. It makes up the body and substance of all musical activity. It is the point of departure in the musical experience. The kinds of sound that can be used for musical purposes are amazingly varied.Throughout the cultures of the world, East and West, a virtually limitless array of sounds has been employed in the service of musical expression. Listen to Oriental theatre music, then to an excerpt from a Wagner work; these two are worlds apart in their qualities of sound as well as in almost every other feature, yet each says something of importance to some listeners. Each can stir a listener and evoke a response in him. All music, whether it is the pulsation of primitive tribal drums or the complex coordination of voices and instruments in an opera, has this feature: it is based upon the power of sound to stir our senses and feelings. Yet sound alone is not music. Something has to happen to the sound. It must move forward in time. Everything that takes place musically involves the movement of sound. If we hear a series of drumbeats, we receive an impression of movement from one stroke to the next. When sounds follow each other in a pattern of melody,we receive an impression of movement from one tone to the next. All music moves; and because it moves, it is associated with a fundamental truth of existence and experience. We are stirred by impressions of movement because our very lives are constantly in movement. Breathing, the action of the pulse, growth, decay, the change of day and night, as well as the constant flow of physical action- these all testify to the fundamental role that movement plays in our lives. Music appeals to our desire and our need for movement. The importance of movement in music is explained by comparing it to
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