John Horgan______. Ⅰ. has published a book entitled The End of Science Ⅱ. has been working as an editor of Scientific American Ⅲ. has been working many years as a literary critic Ⅳ. is working as a science writer
A.
Ⅰ and Ⅱ
B.
Ⅰ
C.
Ⅰ and Ⅳ
D.
Ⅰ, Ⅱ and Ⅳ
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举一反三
【简答题】印刷的三原色是C(青)M(品红)Y(黄),但在适合印刷的色彩模式(CMYK)中引入K(黑)色的主要原因有( )。A. 在实际印刷中,C(青)、M(品红)、Y(黄)很难叠加形成真正的黑色; B. 引入K(黑)可以使Photoshop的屏幕色彩显示更接近印刷颜色; C. K(黑)色在印刷中可以强化暗调,加深暗调色彩; D. 引入K(黑)色可以增强图像色彩的饱和度;