Look at this________. It is so________.
A:deer; short
B:giraffe; tall
已知:a=12008x2+2008,b=12008x2+2007,c=12008x2+2009,求代数式a2+b2+c2﹣ab﹣bc﹣ac的值.
读该区域自然景观图,完成下面小题
(160×40-3800)÷65=( )