A. shows an object simultaneously from many viewpoints B. portrays objects with geometric exactness C. leaves all human faces blank D. represents all forms isolated within boxes 参考答案:A 答案解析:根据本文,韦伯同时用不同的角度显示一个物体。其他选项含义为:[D]用几何图形精确地描绘物体;[C] 使所有脸一片空白;[D]所有物体孤立在箱中。