In general, people talk about two groups of colors: warm colors and cool colors. 【C1】______ in psychology think that there are also two 【C2】______ of people: people who prefer warm colors and people who prefer cool colors.
The warm colors are red, orange and yellow. 【C3】______ there are warm colors and a lot of light, people usually want to be 【C4】______ . People think that red, 【C5】______ , is exciting. People who like to be with 【C6】______ like red. The cool colors are green, blue and violet. These colors, 【C7】______ warm colors, are relaxing. Where there are cool colors, people are usually 【C8】______ . People who like to spend time 【C9】______ often 【C10】______ cool colors.
Red may he exciting, but one researcher says that time seems to pass 【C11】______ in a room with warm colors than in a room with cool colors. He thinks that a warm color, such as red 【C12】______ orange, is a good color for a (an) 【C13】______ or restaurant. People who are relaxing or eating do not want time to pass 【C14】______ . Cool colors are better for offices or factories if people who are working there want time to pass quickly.
Researchers do not know 【C15】______ people think some colors are warm and others cool. 【C16】______ , almost everyone 【C17】______ that red, orange and yellow are warm and that green, blue and violet are cool. Perhaps warm colors 【C18】______ people of warm days and the cool colors remind them of cool days. Because in the north the sun is low in winter, the sunshine seems quite blue. Because the sun is 【C19】______ during summer, the hot sunshine 【C20】______ yellow.
【C1】______

A. Teachers
B. Researchers
C. Workers
Doctors