Rapid application development (RAD) systems purport to lighten the developer’s(41) by making it easy to program an application w

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问题 Rapid application development (RAD) systems purport to lighten the developer’s(41) by making it easy to program an application with simple intuitive steps.RAD tools(42)the developer everything needed to construct a fully functional application quickly and easily. They make short work of modifying the developed product to(43)changes after the program is finished. Applications developed with RAD tools are constructed as they are envisioned. As an application’s real usefulness(44) , the developer armed with RAD tools should be able to(45)on new features with little fuss.

选项 A、beat
B、change
C、debug
D、tack

答案D

解析 快速应用开发(RAD)通过简单而直观的步骤使应用编程变得简单,从而减轻开发人员的负担。RAD工具为开发人员提供了快速而简单地构建一个完整功能应用所需的一切,这些工具能缩短修改已经完成的产品的工作量,这种修改是为了适应程序完成后的变化。使用RAD工具开发的应用就像计划那样构建。当应用的真实有效性出现时,使用RAD工具的开发人员必须能够有条不紊地添加新的特征。常见的RAD工具有Powerbuilder,Visual Basic,Delphi,Oracle/Development 2000等。RAD工具的主要特点是具有图形开发界面和可视计算技术的支持,程序员只需通过简单的鼠标点击和键盘交互操作,即可以快速生成应用程序代码。 (45)小题的四个备选项中,只有beat和tack能与on搭配,其中beat on的含义是“火般照晒,波浪似扑向”,tack on的含义是“添加”。You’ve been engaged to manage a project. The estimated cost of the project is $1 000000. The project sponsor has approved this amount. Your earned value calculations indicate that the project will be completed on time and under budget by $200 000. Based on this calulation, your personal profit will decrease by $2 000.
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