懂你英语Level1-Unit1-Part3 1. Listening: People & This is Dan.Hello, my name...

懂你英语Level1-Unit1-Part2 1. Listening: People & Countries This is Dan.Hell...

懂你英语Level1-Unit1-Part1 1. Listening: Name & This is Dan. Dan is a man.Th...

[ http://www.lintcode.com/en/problem/count-linked-list-nodes/ ]

[ http://www.lintcode.com/en/problem/rectangle-area/ ]

[ http://www.lintcode.com/en/problem/fibonacci/ ]