选择题 .  The beauty of software is in its function, in its internal structure, and in the way in which it is created by a team. To a user, a program with just the right features presented through anintuitive and ______ interface is beautiful. To a software designer, an internal structure thatis partitioned in a simple and intuitive manner, and that minimizes internal coupling isbeautiful. To developers and managers, a motivated team of developers making significantprogress every week, and producing defect-free code, is beautiful. There is beauty on all theselevels.
    Our world needs software -- lots of software. Fifty years ago software was something that ran in a few big and expensive machines. Thirty years ago it was something that ran in mostcompanies and industrial settings. Now there is software running in our cell phones, watches,appliances, automobiles, toys, and tools. And need for new and better software never ______ As our civilization grows and expands, as developing nations build theirinfrastructures, as developed nations strive to achieve ever greater efficiencies, the need formore and more software ______ to increase. It would be a great shame if, in all thatsoftware, there was no beauty.
    We know that software can be ugly. We know that it can be hard to use, unreliable, and carelessly structured. We know that there are software systems whose tangled and carelessinternal structures make them expensive and difficult to change. We know that there aresoftware systems that present their features through an awkward and cumbersomeinterface. We know that there are software systems that crash and misbehave. These are ______ systems. Unfortunately, as a profession, software developers tend to create moreugly systems than beautiful ones.
    There is a secret that the best software developers know. Beauty is cheaper than ugliness. Beauty is faster than ugliness. A beautiful software system can be built andmaintained in less time, and for less money, than an ugly one. Novice software developersdon't understand this. They think that they have to do everything fast and quick. They thinkthat beauty is ______ No! By doing things fast and quick, they make messes that makethe software stiff, and hard to understand. Beautiful systems are flexible and easy tounderstand.  Building them and maintaining them is a joy. It is ugliness that isimpractical. Ugliness will slow you down and make your software expensive andbrittle. Beautiful systems cost the least to build and maintain, and are delivered soonest.71.