题干
．It seems to some experts that 56．com, youku．com and tudou．com _____ 90% of the video market in this area．
A：make u
B：put u
C：set u
D：take u
答案(点此获取答案解析）
A
A：make u
B：put u
C：set u
D：take u
与残差平方和 
如下表：