URL	Title	Id
http://digfir-published.macmillanusa.com/astro_interactive_exercise/ie_kirchoffs_laws.html	Chapter 1. Kirchoff's Laws	51395d03b11c0fd34b000000
http://digfir-published.macmillanusa.com/astro_interactive_exercise/ie_kirchoffs_laws_dlap.xml	DLAP questions	51395d03b11c0fd34b000000