声明的作用域「词法作用域 动态作用域 例：（1)program 1 dynamic(i,0); (2)var r:real (3)procedure show; (4)begin write(r:5:3)end; (⑤)procedrue small; (6)var r:real; (7) begin r:=0.125;show end; (8)begin (9) r:=0.25; (10)show;small;write/n; (11)show;small;write/n; (12)end. 声明的作用域 词法作用域 动态作用域 例：（1）program dynamic(i,0); (2) var r:real (3) procedure show; (4) begin write(r:5:3) end; (5) procedrue small; (6) var r:real; (7) begin r:=0.125; show end; (8) begin (9) r:=0.25; (10) show; small; write/n; (11) show; small; write/n; (12) end