视野内出现过高或过大的亮度对比所造成的视觉不适或视力下降的现象是指（）。
A.闪光
B.散光
C.聚光
D.眩光
参考答案：D
_______ the night they had prepared a lot of wonderful programmes.
A．For
B．At
C．On
D．Of
— I usually go to KFC.And you?
— ______.
A.So I do.
B.So do I.
C.So am I.
D.So I am.
