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编译器和解释器是两种高级语言处理程序，与编译器相比， (1) 。编译器对高级语言源程序的处理过程可以划分为词法分析、语法分析、语义分析、中间代码生成、代码优化、目标代码生成等几个阶段：其中，代码优化和 (2) 并不是每种编译器都必需的。词法分析的作用是识别源程序中的 (3) ；语法分析中的预测分析法是 (4) 的一种语法分析方法：编译器在 (5) 阶段进行表达式的类型检查及类型转换。 (2)
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You can find him in the bookstore__________(在《飘》这本书的旁边)．
程序设计语言可划分为低级语言和高级语言两大类。与高级语言相比，用低级语言开发的程序，其 (1) ，但在 (2) 的场合，还经常全部或部分地使用低级语言。在低级语言中，汇编语言与机器语言十分接近，它使用了 (3) 来提高程序的可读性。高级语言有很多种类，其中，PROLOG是一种 (4) 型语言，它具有很强的 (5) 能力。 (3)
There’s a human liver sitting in a lab dish in Madison, Wis. Also a heart, a brain and every bone in the human body even though the contents of the dish are a few cells too small to be seen without a microscope. But these are stem cells, the most immature human cells ever discovered, taken from embryos before they had decided upon their career path in the body. (46) If scientists could only figure out how to give them just the right kick in just the right direction, each could become a liver, a heart, a brain or a bone. (47) When a team from the University of Wisconsin announced their discovery, doctors around the world looked forward to a new era of medicine one without organ-donor shortages or the tissues-rejection problems that bedevil transplant patients today.Doctors also saw obstacles, though. One of them was a U. S. Congress skittish about research on stem cells taken from unwanted human embryos and aborted fetuses. Indeed, 70 lawmakers asked in a firmly worded letter that the Federal Government ban all such work.Yet the era of "grow your own" organs is already upon us, as researchers have sidestepped the stem cell controversy by making clever use of ordinary cells. Today a machinist in Massachusetts is using his own cells to grow a new thumb after he lost part of his chest wall in an accident. A teenager born without half of his chest wall is growing a new cage of bone and cartilage within his chest cavity. Scientists announced that bladders, grown from bladder cells in a lab, have been implanted in dogs and are working. Meanwhile, patches of skin, the first "tissue-engineered" organ to be approved by the U. S. Food and Drug Administration, are healing sores and skin ulcers on hundreds of patients across the U. S.How have scientists managed to do all this without those protean stem cells Part of the answer is smart engineering. (48) Using materials such as polymers with pores no wider than a toothbrush bristle, researchers have learned to sculpt scaffolds in shapes into which cells can settle. The other part of the answer is just plain cell biology. (49) Scientists have discovered that they don’t have to teach old cells new tricks; given the right framework and the right nutrients, cells will organize themselves into real tissues as the scaffolds dissolve. "I’m a great believer in the cells. They’re not just lying there, looking stupidly at each other," says Francois Auger, an infectious disease specialist and builder of artificial blood vessels at Laval University in Quebec City. "They will do the work for you if you treat them right."Replacement hearts—or even replacement heart parts—are at least a decade off, estimates Kiki Hellman, who monitors tissue-engineering efforts for the FDA. "Any problem that requires lots of cell types ’talking’ to one another is really hard," she notes. Bone and cartilage efforts are much closer to fruition, and could be ready for human trials within two years. (50) And what of those magical stem cells that can grow into any organ you happen to need—if the law and biologists’ knowledge permit "Using them," says Sefton, "is really the Holy Grail.\ And what of those magical stem cells that can grow into any organ you happen to need—if the law and biologists’ knowledge permit
在2007年全国股份制商业银行行长联席会议上，中国光大银行行长郭友表示：“国内银行主要依赖存贷款传统业务不同，中间业务是国际银行的最大利润来源之一，大力发展中间业务已成为国内银行提高综合竞争力的必然要求，为此中国银行业应改变目前的传统客户结构，并加速金融创新。” 与欧洲、美国，甚至亚洲等国家或地区的银行相比，国内银行中间业务的整体发展水平较低，在量和质上都有所体现：一方面，大部分国内商业银行的中间业务收入占总收入的比例大约为10%，远远低于美国和欧洲，与亚洲其他较为成熟的市场如日本、新加坡等相比，也存在一定差距；另一方面，国内商业银行中间业务品种少，范围窄，集中于传统的结算、汇兑、代收代付以及信用卡、信用证、押汇等产品，咨询服务类、投资融资类及衍生金融工具交易等高技术含量、高附加值中间业务发展不足，覆盖面窄。 请运用相关知识，分析我国商业银行大力发展中间业务的必要性及其相应采取的措施。
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