—Guess what? Tom has failed in the exam second time. —How come? He is second to none in

—Guess what? Tom has failed in the exam second time.
—How come? He is second to none in English in our class.
A. a; a
B. the; a
C. a; /
D. the; the

A. a; aB. the; a(答案→)C. a; /D. the; the解析：考查冠词。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！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； 选C

我明天再问问老师，叫他解释下这个问题