题目内容：
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-such as a lawn or shrub in shadow-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 loss of the "afterimage" of the first object
D．adaptation in the central area of the eye but little adaptation in the lateral areas to the new intensity level
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答案解析：