《论毅力》中,依次罗列“志力薄弱者”、“次弱者”、“稍强者”、“更稍强者”、“之强者”五种人的态度和结果,这种修辞手法是( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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