单项选择题

This selection is primarily concerned with ______.

A．the eye's adaptation to color
B．the properties of colored surfaces
C．the color of colors
D．the effect of changes in color intensity
<上一题 目录 下一题>
热门 试题

单项选择题
If a person's eye has been looking at an object in bright sunlight for some time, and then shifts to an object not well lit, we can expect ______.
A．a time lag in the focusing ability of the eye
B．some inability to see colors of the latter-named objects until loss of sensitivity has been regained.
C．the immediate less of the "afterimage" of the first object
D．the adaptation in the central area of the eye but little adaptation in the lateral areas to thenew intensity level.
单项选择题
In the author's opinion, the idea that geneticists could produce a super-ape is ______.
A．irrational
B．plausible
C．biologically impossible
D．demonstrably true
相关试题