单选题 What he has just said has little to do with the question ______ discussion.
A. on B. under C. in D. at

【正确答案】 B
【答案解析】[解析] 本题考查介词的用法。“在讨论中”应该用under discussion来表示,因此选项B为正确答案。
[避错指南] 选项A(在……上面,在正上方)、C(在……里面)和D(在……方面),此三项均与句子意思不符。另外,若想表达“和……有很大关系”,则用结构have mach to do with sth.。