下列程序绘制的图形是？（ ）
import turtle
screen = turtle.Screen()
pen = turtle.Turtle()
pen.forward(100)
pen.right(90)
pen.forward(100)
pen.right(90)
pen.forward(100)
pen.right(90)
pen.forward(100)
turtle.done()
正在加载题目数据…
子题
该题型需在试卷/作业中作答，单题练习暂不支持
答案解析