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属于孪生素数的是（）。
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LongersentencesandGREwordscanshowtheaudienceourgoodcommandofEnglish,soitshouldbeencouraged.
Weshouldavoidusingjargons,Internetbuzzwords,andshockingorobscenelanguage.
Whenpreparingforaspeech,writinganoutlineisjustawasteoftime.Weshouldstarttowritethebeginningimmediately.
Aoutlineonlyneedstoincludeourmainpoints.Subpoints,transitions,examplescanallbeomitted.
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