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问题 选择题

在海瑞陵园的亭柱上，挂着海瑞写的一副对联：“政善民安歌道泰，风调雨顺号时清”。这副对联反映出海瑞： [ ]

①崇尚以民为本的政治理念，具有积极的历史价值

②强调执政为民的民主思想，具有超越时代的普遍意义

③憧憬人与自然的和谐，体现了环境友好的发展观念

④主张勤勉清廉的从正道德，具有净化官风的积极意义

A．①②

B．②③

C．①④

D．③④

答案

答案：C

单项选择题

As one works with color in a practical, or experimental way, one is impressed by two apparently unrelated facts. Color as seen is a mobile, changeable thing (1) to a large extent on the relationship of the color (2) other colors (3) simultaneously. It is not (4) in its relation to the direct stimulus which (5) it. On the other hand, the properties of surfaces that give (6) to color do not seem to change greatly under a wide variety of illumination color, usually (but not always) looking much the same in artificial light as in daylight. Both of these effects seem to be (7) in large part to the mechanism of color (8) .

When the eye is (9) to a colored area, there is an immediate readjustment of the (10) of the eye to color in and around the area (11) . This readjustment does not promptly affect the color seen but usually does affect the next area to which the (12) is shifted. The longer the time of viewing, the higher the (13) , and the larger the area, the greater the effect will be (14) its persistence in the (15) viewing situation. As indicated by the work of Wright and Schouten, it appears that, at (16) for a first approximation, full adaptation takes place over (17) time if the adapting source is moderately bright and the eye has been in (18) darkness just previously. Also, (19) of the persistence of the effect if the eye is shifted around from one object to another, all of which are at similar brightness or have similar colors, the adaptation will tend to become (20) over the whole eye.

19（）

A.regardless

B.despite

C.exclusive

D.because
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填空题
以双曲线
x2
16
-
y2
9
=1的中心为顶点，左焦点为焦点的抛物线方程是______．
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