单选题
My boss insists on seeing everything in______before he makes a decision.
A. black and blue B. red and blue
C. black and white D. green and yellow
【正确答案】
C
【答案解析】[解析] A项black and blue意为“青肿的;淤血的”,与上下文意思不符。C项black and white意为“白纸黑字,黑白分明,清清楚楚”,符合本句的意思,为正确答案。其他两项不是习惯用语。