儿童辨别椭圆、长方形、菱形的大小比较容易,辨别正圆、正方、等边三角形的大小比较困难。 @font-face { font-family: "Times New Roman"; }@font-face { font-family: "宋体"; }p.MsoNormal { margin: 0pt 0pt 0.0001pt; font-family: "Times New Roman"; font-size: 12pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }