Software entities are more complex for their size than perhaps any other human construct, because no two parts are alike (at least above the statement level). If they are, we make the two similar parts into one, a（71 ）, open or closed. In this respect s

资料：As more personal business is conducted through smartphone devices , more users are implementing security measures for their devices, according to a recent survey by Harris Poll and commissioned by the CTIA. The survey was a part of the company’s ongoing efforts to boost user education on the pitfalls of mobile security and assess whether the CTIA’s initiatives are working. It turns out that mobile users in the US have begun implementing many of the initiatives set forth and have increased both awareness of, and protection for, their mobile devices: More smartphone users are protecting their devices with PINs and passwords than in previous years. In 2016, of smartphone users had some sort of PIN/password, up from 2015 and form 2012. An increasing number of smartphone users have installed built-in remote lock-and-erase software. Of survey respondents, have this type of lock-and-erase software installed, up an astounding from 2015 and from 2012. Smartphone users are increasingly aware of the importance of anti-virus software. of smartphone users have an anti-virus software installed, compared with only of smartphone owners in 2015, according to BI Intelligence. The survey results indicate that users are becoming increasingly aware of the danger posed by the increasing reliance on mobile technology form not only malicious entities like hackers, but also government surveillance. Specifically, users are increasingly seeking for ways to guard themselves in light of a number of recent high-profile incidents involving phone security–like Apple's case against the FBI, for example. Because of this, it will become increasingly common for app developers and device manufactures to build in security and end-to-end encryption. This can be seen in devices and apps such as WhatsApp and iPhones. Developers and device manufacturers that don't include this feature in their products could be faced with negative consumer attitudes.Which sentence best expresses the main idea of the passage?A.Developers and device manufacturers are becoming more aware of security features. B.Lack of security features could result in negative consumer attitudes. C.Smartphone users are becoming more aware of security features. D.Smartphone users are becoming more aware of government surveillance.

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 an intuitive and( 71 )interface is beautiful. To a software designer, an internal structure that is partitioned in a simple and intuitive manner, and that minimizes internal coupling is beautiful. To developers and managers, a motivated team of developers making significant progress every week, and producing defect-free code, is beautiful. There is beauty on all these levels.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 most companies 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( 作答此空 ). As our civilization grows and expands, as developing nations build their infrastructures, as developed nations strive to achieve ever greater efficiencies, the need for more and more Software( 73 )to increase. It would be a great shame if, in all that software，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 careless internal structures make them expensive and difficult to change. We know that there are software systems that present their features through an awkward and cumbersome interface. We know that there are software systems that crash and misbehave. These are( 74) systems. Unfortunately, as a profession, software developers tend to create more ugly 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 and maintained in less time, and for less money, than an ugly one. Novice software developers don't understand this. They think that they have to do everything fast and quick. They think that beauty is( 75 ). No! By doing things fast and quick, they make messes that make the software stiff, and hard to understand, Beautiful systems are flexible and easy to understand. Building them and maintaining them is a joy. It is ugliness that is impractical. Ugliness will slow you down and make your software expensive and brittle. Beautiful systems cost the least build and maintain, and are delivered soonest.A.happens B.exists C.stops D.starts

单选题Which of the following is a benefit of software RAID？（）AIncreased data integrityBHigher performanceCLower cost to implementDMore storage possibilities

Why is there no need to configure complex overlay network topologies when using Cisco WAAS? （）A、remote scheduling of software distributionB、comprehensive logs, reports, and graphsC、automatic discovery of Cisco WAEsD、content pre-positioning

单选题Which of the following describes the difference between hardware and software RAID technologies？（）A Software RAID offers more storage possibilities than hardware RAIDB Hardware RAID performs faster than software RAIDC Hardware RAID is less expensive than software RAIDD Software RAID volumes are compatible with any OS and hardware RAID volumes are not

单选题The author of Passage 2 believes that the intermediate forms (line 66)connecting simple organisms to more complex ones ______.A have not yet been found, casting doubt on macroevolutionary processesB do not exist, proving that macroevolution is impossibleC are no longer debated in the scientific communityD prove that all living things are descended from a common ancestorE show that horses are more closely related to humans than are bacterium

Software entities are more complex for their size than perhaps any other human construct,because no two parts are alike（at least above the statement level）.If they are,we make the two similar parts into one,a（1）,open or closed.In this respect software systems differ profoundly from computers,buildings,or automobiles,where repeated elements abound.Digital computers are themselves more complex than most things people build;they have very large numbers of states.This makes conceiving,describing,and testing them hard.Software systems have orders of magnitude more（2）than computers do.Likewise,a scaling-up of a software entity is not merely a repetition of the same elements in larger size;it is necessarily an increase in the number of different elements.In most cases,the elements interact with each other in some（3）fashion,and the complexity of the whole increases much more than linearly.The complexity of software is a（an）（4）property,not an accidental one.Hence descriptions of a software entity that abstract away its complexity often abstract away its essence.Mathematics and the physical sciences made great strides for three centuries by constructing simplified models of complex phenomena,deriving,properties from the models,and verifying those properties experimentally.This worked because the complexities（5）in the models were not the essential properties of the phenomena.It does not work when the complexities are the essence.Many of the classical problems of developing software products derive from this essential complexity and its nonlinear increases with size.Not only technical problems but management problems as well come from the complexity. 4、____A.surface B.outside C.exterior D.essential

Text 2 In a former leather factory just off Euston Road in London,a hopeful firm is starting up.BenevolentAI's main room is large and open-plan.In it,scientists and coders sit busily on benches,plyinS their various trades.I\e firm's star,though,has a private,temperature.controlled office.Thal star is a powerful computer that runs the software which sits at the heart of BenevolentAl's business.This software is an artificial-intelligence system.AI,as it is known for short,comes in several forms.But BenevolentAI's version of it is a form of machine learning that can draw inferences about wh8t it has leamed.In particular,it can process natural language and formulate new ideas from what it reads.Its job is to sift through vast chemical libraries,medical databases and conventionally presented scientific papers,looking for potential drug molecules.Nor is BenevolentAI a one-off.More and more people and firms believe that AI is well placed to help unpick biology and advance human health.Indeed,as Chris Bishop of Microsoft Research,in Cambridge,England,observes,one way of thinking aboui living organisms is to recognize that they are,in essence.complex systems which process informalion using a combination of hardware and software.That thought has consequences.Whether it is the new Chan Zuckerberg Initiative（CZI）,from the founder of Facebook and his wife,or the biological subsidiaries being set up by firms such as Alphabet（Google's parent company）,IBM and Microsofi,the new Big Idea in Silicon Valley is that in the worlds of biology and disease there are problems its software engineers can solve.The discovery of new drugs is an early test of the belief that AI has much to offer biology and medicine.Pharmaceutical companies are finding il increasingly difficult lo make headway in their search for novel products.The conventional approach is to screen larf;e numbers of molecules for signs of relative biological effect,and then weed out the useless partin a series of more and more expensive tests and trials,in the hope of coming up with a golden nugget at the end.This way of doing things is,however,declining in productivity and rising in cost. According to Paragraph 2,BenevolentAI's version of Al can_____A.make some inferences B.think like human beings C.teach machines to learn D.leam complex language

单选题The combustion of larger molecules,（）have multiple carbon-carbon bonds involves a more complex series of reactions.A whatB whichC thatD who

Which of the following points is not included in the passage?___________A.Industrial development includes the simplification of complex chemical processes B.Diluting wastes needs certain amount of water C.Demands for water will go up along with the expanding population D.Intensive cultivation of land requires more and more chemicals

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Software entities are more complex for their size than perhaps any other human construct, because no two parts are alike (at least above the statement level). If they are, we make the two similar parts into one, a（71 ）, open or closed. In this respect s

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