Part IV 完形填空

Cloze (10 points) choices marked A, B, C, and D. Choose the best answer for each blank and mark your answer on the Answer Sheet. Cloud computing (云计算) means storing and accessing data and programs over the Internet instead of your computer's hard drive. It 46 computing overanetwork, where a program or application may run on many connected computers at the same time. For some, cloud computing isametaphor ( 隐喻) for the Internet. It 47 uses connected hardware machines called servers. Individual users can use the server's processing power to run an application, store data, or 48 any other computing task. For businesses, cloud computing is an ideal way to reduce 49 . For example, companies may buy services in the cloud. That is to say, instead of 50 applications on every single computer in the company, cloud computing would allow workers to log into a Web-based service (a cloud) which hosts all the 51 individual users would need for their job. While cloud computing could change the entire computer industry, there are still some 52 about the security of the data stored on the remote machines. It is true that it promises to savealot of work. However, this technology 53 a fundamental question. Is it safe to store one's data on someone else's computer? The cloud service provider needs to establish relevant policies that describe 54 the data of each cloud user will be accessed and used. Cloud service users should also be able to encrypt (加密) 55 that is processed or stored within the cloud to prevent unauthorized access.

46. A predictsB involvesC replacesD affects
47. A necessarilyB possiblyC typicallyD really
48. A getB performC showD assign
49. A expensesB moneyC incomeD profits
50. A writingB developingC fittingD installing
51. A schedulesB programsC projectsD documents
52. A concernsB casesC advantagesD effects
53. A proposesB collectsC managesD raises
54. A whetherB whyC whatD how
55. A systemB dataC storageD knowledge