光的反射定律:光反射时,反射光线、入射光线与法线在同一 内;反射光线和入射光线分别位于法线的 ;反射角 入射角.
平面;两侧;等于.
—Excuse me.Could you please tell me __________?
—Sure.There’s a bookstore on River Road.
A.where can I get a dictionary
B.where could I get a dictionary
C.where I could get a dictionary
D.where I can get a dictionary