单选题 It is very difficult for him to ______ between blue and green.
A. contrast B. distinguish
C. separate D. compare

【正确答案】 B
【答案解析】[解析] distinguish between“区别,辨别”,如:distinguish between right and wrong“分清是非”;contrast (with)“形成对比;相对照”,如:His actions contrast sharply with his promises. 他的言行相差太远。separate (from)“分开,隔开”,如,Separate the good ones from the bad. 使好的和坏的分开。compare( with)“比较”,指研究,评判人与人或事物与事物之间相同或相异之程度,如:compare your composition with the model composition“把你的作文与范文相比较”。