彩色的视觉后像是
A．与原像明暗相同B．比原像光度暗淡C．原像颜色的补色D．与原像颜色相同E．比原像更明亮些
参考答案：C
He suddenly appeared on ________ rainy night, which was ________ great surprise to us.[ ]
A．a; /
B．a; a
C．the; a
D．/; the
