如图所示的四种情景中,属于光的反射现象的是[ ]
A.
B.
C.
D.
AD
Some of my classmates cartoons documentaries. [ ]
A. prefer, to
B. would rather, than
C. like, better
D. like, less
收银员在商场开展满赠活动赠送顾客电子币时,首先要告知顾客赠送的电子币(),其次要告知顾客电子币的()。