Pages in the body of the tutorial feature the text and illustrations of each panel, separated on the page with a horizontal line.

教程主体中的页面中包含了每个面板的文本及其说明，它们之间用一条水平线分隔。

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Instead of weekly graded assignments, this course offers on-line tutorial problems with answers that students can use to test their understanding of the lecture material.

本课程并没有每周批改的作业，取而代之的是线上的教学问题和解答，你可以利用它来测试你对课程内容的了解。

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