果糖虽是酮糖，却属于还原糖。
参考答案：对
已知﹣2xbya﹣2与4x2y是同类项，则a+b= _________ ．
Which of the following approaches in measuring interest rate risk is most accurate when properly performed（）
A. Duration/convexity approach.
B. Full Valuation approach.
C. Duration approach.
