题目

    Are you the type of person who always says“yes”？I’ve come to learn that it is very important to learn to say NO！It’s okay. People are still going to like you. They may even respect you more because they know you are honest.     I，m not saying to say“no to someone who really needs your help. I’m talking about refusing that meeting that you really do not want to attend or that birthday party that you don’t want to be a guest at. Think for a moment how you feel when you say YES to something that you really don't want to do. If you’re like I once was，10．计算（4ab）2的结果是（　　）A．8abB．8a2bC．16ab2D．16a2b2