题目

图甲是H2O2酶活性受pH影响的曲线，图乙表示在最适温度下，pH=b时H2O2分解产生的O2量随时间的变化曲线．若该酶促反应过程中改变某一初始条件，以下叙述正确的是（ ） A . pH=c时，e点为0 B . pH=a时，e点下移，d点左移 C . 温度降低时，e点不移动，d点右移 D . H2O2量增加时，e点不移动，d点左移 答案：C ---Mum, could you buy me an MP4 like this?--- Certainly, we can buy ______ one than this, but ______ this.A. a better; better thanB. a cheaper; as good asC. a worse; as good asD. a more important; not as good as