单选题 The reporter compares a husband to a particularly tricky musical instrument, one that a wife must learn to play ______ her advantage.
【正确答案】 C
【答案解析】[解析] 选择A和B似乎都说的通,但跟据全句整体语境以及learn to play的暗示,只有答案C是正确选择,因为to one"s advantage是个习惯用语,也是一个固定搭配。