A usually full-sized scale model of a structure, used for demonstration, study, or testing.

实体模型：一种通常是建筑物的全尺寸模型，用作陈列，研究或试验。

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Based on the theories of oral language testing and Bachman's Communicative Language Competence Model, this paper tries to study the effects of different task types on students'oral performance.

本文通过对口语测试的理论进行分析，结合交际能力模式框架，试图探讨口语测试中题型的变化对考生口语表现的影响。

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Therefore, the study of software testing resource allocation model, particularly with the optimal search theory, is very meaningful.

因此，研究新型的软件测试资源分配模型，特别是运用最优化方法，是非常有意义的。

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