【单选题】
{{B}}Directions:{{/B}}
Read the following text.Choose the best word(s) for each numbered blank and markA,B,C、orD、onANSWER SHEET 1.
The fact that blind people can "see" things using other parts of their bodies apart from their eyes may help us to understand our feelings about color. If they can{{U}} (1) {{/U}}color differences, then perhaps we, too, are affected by{{U}} (2) {{/U}}unconsciously. Manufacturers have discovered by{{U}} (3) {{/U}}that sugar sells badly in green wrappings,{{U}} (4) {{/U}}blue foods are considered unpleasant, and the cosmetics should never be packaged{{U}} (5) {{/U}}brown. These discoveries have grown{{U}} (6) {{/U}}a whole discipline of color psychology that now finds{{U}} (7) {{/U}}in everything from fashion to interior decoration. Some of our{{U}} (8) {{/U}}are clearly psychological.Dark blue is the color of the night sky and{{U}} (9) {{/U}}associated with passivity and calm, while yellow is a day color with{{U}} (10) {{/U}}of energy and incentive. For primitive man, activity during the day{{U}} (11) {{/U}}hunting and attacking, while he soon saw as red, the color of blood and rage and the heat that came{{U}} (12) {{/U}}effort.And green is associated with passive{{U}} (13) {{/U}}and self preservation.Experiments have{{U}} (14) {{/U}}that green, partly bemuse of its physiological associations, also has a direct psychological{{U}} (15) {{/U}}, it is a calming color.{{U}} (16) {{/U}}its exciting connotations, red was chosen as the signal for changer,{{U}} (17) {{/U}}closer analysis shows that a vivid yellow can produce a{{U}} (18) {{/U}}basic state of alertness and (19) , so fire engines and ambulances in some advanced communities are now{{U}} (20) {{/U}}around in bright yellow colors that stop the traffic deaD、
A．experiments
B．trial and error
C．facts
D．studies
网考网参考答案：B
网考网解析：本题选项trial and error可以与by或through组成固定搭配，表示通过反复摸索，符合文意。
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