单选题 ______, a man who expresses himself effectively is sure to succeed more rapidly than a man whose command of language is poor.
A. Other things being equal B. Were other things equal
C. To be equal to other things D. Other things to be equal

【正确答案】 A

【答案解析】[解析] 独立结构题。结合选项，空格应是一个表示条件的状语或状语从句，A项是一个分词独立结构，可起条件状语的作用。表示“在其他条件相同的情况下”。B项是个虚拟条件句，可空格后是陈述语气，而不是虚拟语气，所以不对。C项是动词不定式短语，可做目的状语，但不做条件状语。