Objective: to investigate the effect of different therapeutic modality and potential prognostic factors in patients with brain metastases.

目的：探讨脑转移瘤的不同治疗方法的疗效及患者的预后影响因素。

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The aesthetics design in the web-based courseware can not only embody the modality and style of the courseware, but also affect the teaching effect.

网络课件的审美设计不仅体现课件的形态和风格，而且会影响网络教学的效果。

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For a long time, data from experiments of auditory-visual modality effect is inconsistent, and its theoretical explanations also are controversial.

长期以来，对视听通道效应的实验结果的发现是不一致的，理论解释上也存在着诸多争议。

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