— Guess what? Tom has failed in the exam _______ second time.— How e? He is ______ second to none in English in our class.A.a; aB.the; aC.a; /D.the; the
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C解析考查冠词。序数词前面加不定冠词表示再一，又一；（a second time再一次）；固定词组second to none首屈一指；句意：—猜猜发生什么事情了？Tom又一次考试不及格：—怎么可能？他可是我们班级英语首屈一指的优秀生啊！