源码如下：-----------选出“△”的：A:MA(C,3),COLOR00FF00,LINETHICK2;A2:=MA(A,2);B:IF(A>REF(A,1),A,A2),COLOR0000FF,LINETHICK2;↑:=CROSS(A,A2);↓:=CROSS(A2,A);DRAWTEXT(↑,A,'△'),COLOR00FFFF;DRAWTEXT(↓,A,'↓'),COLORFFFF00;