题目有下列各组数:①666,888,101010；②323^{2}32,424^{2}42,525^{2}52；③35\frac{3}{5}53,45\frac{4}{5}54,111；④121212,161616,202020；⑤0.50.50.5,1.21.21.2,1.31.31.3.其中勾股数有（ ）A.111组B.222组C.333组D.444组知识点：勾股数章节：图形的性质 / 三角形
