问题：
[不定项选择题] When we consider great painters of the past, the study of art and the study of illusion cannot always be separated. By illusion I mean those contrivances of color, line, shape, and forth that lead us
A、They consider the use of illusion to be inappropriate in contemporary art.
B、They do not agree the marks on a flat surface can ever satisfactorily convey the illusion of three-dimensional space.
C、They do not discuss important works of art created in the past.
D、They do not think that the representation of nature was ever the primary goal of past painters.
参考答案：
A、They consider the use of illusion to be inappropriate in contemporary art.
● 参考解析
