单项选择题

But it is not only group expectations that color what we see; personality and mood fluctuation can also alter our perceptions. In the context in which it appears, "color" most nearly means

A. modify.
B. brighten.
C. disguise.
D. excuse.
E. adorn.
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单项选择题
Several things, however, suggest that the conventional view needs revising. For example, the genus Lingula has an unbroken fossil record extending over more than half a billion years to the present. Thus, if longevity is any measure, brachiopods are the most successful organisms extant. Further, recent studies suggest that diversity among species is a less important measure of evolutionary success than is the ability to withstand environmental change, such as when a layer of clay replaces sand on the ocean bottom. The relatively greater uniformity among the existing brachiopod species may offer greater protection from environmental change and hence may reflect highly successful adaptive behavior. The passage makes use of which of the following
A. Specific examples.
B. Analogy.
C. Metaphor.
D. Quotation.
E. Exaggeration.
单项选择题
Cells in the parvo system can distinguish between two colors at any relative brightness of the two. Cells in the color-blind magno system, on the other hand, are analogous to a black-and-white photograph in the way they function: they signal information about the brightness of surfaces but not about their colors. For any pair of colors there is a particular brightness ratio at which two colors, for example red and green, will appear as the same shade of gray in a black-and-white photograph, hence any border between them will vanish. Similarly at some relative red-to-green brightness level, the red and green will appear identical to the magno system. The red and green are then called equiluminant. A border between two equiluminant colors has color contrast but no luminance contrast. The author uses all of the following in the discussion in the third paragraph EXCEPT:
A. an example.
B. definition of terms.
C. contrast.
D. a rhetorical question.
E. analogy.
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