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ＰａｒｔⅡＲｅａｄｉｎｇＣｏｍｐｒｅｈｅｎｓｉｏｎＰａｓｓａｇｅ１（２１———２５题）这是一篇议论文,主要谈及乘客在飞机上使用电子工具时所释放出的电磁波干扰对飞机安全飞行可能造成的威胁。２１．［题解］选Ｃ）。主旨题。问文章的主题是关于什么的。该题主要目的是
PartIIReadingComprehensionPassage1 (21-25) This is an argumentative paper that mainly talks about the possible threat to the safe flight of the aircraft caused by electromagnetic interference released by passengers when they use electronic tools on the aircraft. 21. [solution] choose C). Subject themes. The subject of the article is asked about what it is. The main purpose of this question is