题目

筷子放在盛有水的碗里，侧面看去筷子发生弯折，这是由于光的（    ） A．折射现象     B．反射现象    C．漫反射现象      D．镜面反射现象 答案：A   — Excuse me. Could you ________ English in class?— Yes, of course. I am very good at _______ English stories.A.say; talking B.tell; sayingC.speak; telling D.tell; speaking