The passage is mainly about______. [br] To cure the snoring problems，surgery can

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问题 The passage is mainly about______. [br] To cure the snoring problems，surgery can be used to improve______.

选项

答案 NASALAIRFLOW

解析同义转述题。此处要填入名词性成分作improve的宾语。本题考查如何通过手术来治疗打鼾的毛病。根据原文可知，扩宽空气通道和加快呼吸气流都对治疗打鼾有效。由此得出答案为nasal airflow。

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