There is also a scene of a banner with an American flag in the background and the New York City skyline with the destroyed World Trade Center twin towers.

VOA: standard.2009.09.14

> So this thing here, when green flag clicked say, oh, hi world, this was perhaps the simplest program we could write in Scratch.

>，我们先看看这个例子，“点击绿旗“下面显示“,这也许是我们用Scratch软件写出的最简单的，程序了。

哈佛公开课 - 计算机科学课程节选

> So this thing here, when green flag clicked say, oh, hi world, this was perhaps the simplest program we could write in Scratch.

>，我们先看看这个例子，“点击绿旗“下面显示“,这也许是我们用Scratch软件写出的最简单的，程序了。

哈佛公开课 - 计算机科学课程节选