Test and analysis: "Painting cakes to satisfy hunger" and "Looking at plums to quench thirst" emphasize the positive role of consciousness in people and have the function of regulating people's physiological activities. Therefore, item B is selected in this question, and item ACD itself is correct but does not conform to the meaning of the question, so it should be excluded.

Comments: Philosophical questions often examine the philosophical truth contained in famous sayings, proverbs and ancient poems. It is also a common question in the college entrance examination. To do this kind of problem, one is to understand the meaning of the material. The second is to find the corresponding point, that is, to find the philosophical truth corresponding to matter. This question is moderately difficult.