1、Cloud computing is a phrase used to describe a variety of computing concepts that involve a large number of computers ___（71）___ through a real-time communication network such as the Internet. In science, cloud computing is a ___（72）___ for distributed computing over a network, and means the ___（73）___ to run a program or application on many connected computers at the same time.The architecture of a cloud is developed at three layers: infrastructure, platform, and application. The infrastucture layer is built with virtualized computestorageand network resources. The platform lay-er is for general-purpose and repeated usage of the collection of software resources. The application layer is formed with a collection of all needed software modules for SaaS applications. The infrastucture layer serves as the ___（74）___ for building the platform layer of the cloud. In turn, the platform layer is foundation for implementing the ___（75）___ layer for SaaS application.
A、ability
B、approach
C、function
D、method
答案:A
答题解析:
云计算是一个用来描述各种计算概念的一个短语，计算概念涉及大量计算机通过实时通信的网络，如Internet，（71）在一起。在科学研究中，云计算是分布式网络计算的（72），意味着有（73）同时在多台互连的计算机上运行一个程序或应用。
云的结构分为3层：基础设施、平台和应用。基础实施层由虚拟计算机存储和网络资源构成；平台层是具有通用性和复用性的软件资源的集合；应用层是云上针对SaaS应用的所有应用软件的集合。基础设施层时建立平台层的（74）基础；相应地，平台层是执行应用层SaaS（75）的基础。
（73）A.能力 B.方法 C.功能 D. 方式
2、Cloud computing is a phrase used to describe a variety of computing concepts that involve a large number of computers ___（71）___ through a real-time communication network such as the Internet. In science, cloud computing is a ___（72）___ for distributed computing over a network, and means the ___（73）___ to run a program or application on many connected computers at the same time.The architecture of a cloud is developed at three layers: infrastructure, platform, and application. The infrastucture layer is built with virtualized computestorageand network resources. The platform lay-er is for general-purpose and repeated usage of the collection of software resources. The application layer is formed with a collection of all needed software modules for SaaS applications. The infrastucture layer serves as the ___（74）___ for building the platform layer of the cloud. In turn, the platform layer is foundation for implementing the ___（75）___ layer for SaaS application.
A、network
B、foundation
C、software
D、hardware
答案:D
答题解析:
云计算是一个用来描述各种计算概念的一个短语，计算概念涉及大量计算机通过实时通信的网络，如Internet，（71）在一起。在科学研究中，云计算是分布式网络计算的（72），意味着有（73）同时在多台互连的计算机上运行一个程序或应用。
云的结构分为3层：基础设施、平台和应用。基础实施层由虚拟计算机存储和网络资源构成；平台层是具有通用性和复用性的软件资源的集合；应用层是云上针对SaaS应用的所有应用软件的集合。基础设施层时建立平台层的（74）基础；相应地，平台层是执行应用层SaaS（75）的基础。
（74）A. 网络 B. 基础 C.软件 D. 硬件
3、Cloud computing is a phrase used to describe a variety of computing concepts that involve a large number of computers ___（71）___ through a real-time communication network such as the Internet. In science, cloud computing is a ___（72）___ for distributed computing over a network, and means the ___（73）___ to run a program or application on many connected computers at the same time.The architecture of a cloud is developed at three layers: infrastructure, platform, and application. The infrastucture layer is built with virtualized computestorageand network resources. The platform lay-er is for general-purpose and repeated usage of the collection of software resources. The application layer is formed with a collection of all needed software modules for SaaS applications. The infrastucture layer serves as the ___（74）___ for building the platform layer of the cloud. In turn, the platform layer is foundation for implementing the ___（75）___ layer for SaaS application.
A、resource
B、service
C、application
D、software
答案:C
答题解析:
云计算是一个用来描述各种计算概念的一个短语，计算概念涉及大量计算机通过实时通信的网络，如Internet，（71）在一起。在科学研究中，云计算是分布式网络计算的（72），意味着有（73）同时在多台互连的计算机上运行一个程序或应用。
云的结构分为3层：基础设施、平台和应用。基础实施层由虚拟计算机存储和网络资源构成；平台层是具有通用性和复用性的软件资源的集合；应用层是云上针对SaaS应用的所有应用软件的集合。基础设施层时建立平台层的（74）基础；相应地，平台层是执行应用层SaaS（75）的基础。
（75）A. 资源 B. 服务 C. 应用 D. 软件
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