与解析本文是一篇应用文。文章主要介绍了即将参展的梵高的四幅代表作21.B细节理解题,根据 Potato Eaters一节中Potato Eaters was Van Gogh's' first major work and, despite distinet lock of colour, it was one that he was most proud of."可知, Potato Eaters是梵高自己感到最得意的作品22.A细节理解题,根据 Irises-节中“Originally, the flowers in this work were painted purple but the red pigment(色素) faded over time and has now turned blue可知, Irises中的花原来是紫色的,后来因为失去了红色素,而变成了蓝色。