人类先祖创造这些文字主要是为了满足<table _dj="MsoNormalTable" border="1" cellspacing="0" style="border-collapse:collapse;margin-left:-0.6000pt;border:none;mso-border-left-alt:0.5000pt solid windowtext;mso-border-top-alt:0.5000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;mso-border-insideh:0.5000pt solid windowtext;mso-border-insidev:0.5000pt solid windowtext;mso-padding-alt:6.0000pt 6.0000pt 6.0000pt 6.0000pt ;"><tbody><tr><td valign="center" style="padding:3.7500pt 6.0000pt 3.7500pt 6.0000pt ;border-left:1.0000pt solid rgb(0,0,0);mso-border-left-alt:0.7500pt solid rgb(0,0,0);border-right:1.0000pt solid rgb(0,0,0);mso-border-right-alt:0.7500pt solid rgb(0,0,0);border-top:1.0000pt solid rgb(0,0,0);mso-border-top-alt:0.7500pt solid rgb(0,0,0);border-bottom:1.0000pt solid rgb(0,0,0);mso-border-bottom-alt:0.7500pt solid rgb(0,0,0);">古文明国</td><td valign="center" style="padding:3.7500pt 6.0000pt 3.7500pt 6.0000pt ;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid rgb(0,0,0);mso-border-right-alt:0.7500pt solid rgb(0,0,0);border-top:1.0000pt solid rgb(0,0,0);mso-border-top-alt:0.7500pt solid rgb(0,0,0);border-bottom:1.0000pt solid rgb(0,0,0);mso-border-bottom-alt:0.7500pt solid rgb(0,0,0);">古埃及</td><td valign="center" style="padding:3.7500pt 6.0000pt 3.7500pt 6.0000pt ;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid rgb(0,0,0);mso-border-right-alt:0.7500pt solid rgb(0,0,0);border-top:1.0000pt solid rgb(0,0,0);mso-border-top-alt:0.7500pt solid rgb(0,0,0);border-bottom:1.0000pt solid rgb(0,0,0);mso-border-bottom-alt:0.7500pt solid rgb(0,0,0);">古巴比伦</td><td valign="center" style="padding:3.7500pt 6.0000pt 3.7500pt 6.0000pt ;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid rgb(0,0,0);mso-border-right-alt:0.7500pt solid rgb(0,0,0);border-top:1.0000pt solid rgb(0,0,0);mso-border-top-alt:0.7500pt solid rgb(0,0,0);border-bottom:1.0000pt solid rgb(0,0,0);mso-border-bottom-alt:0.7500pt solid rgb(0,0,0);">中国</td></tr><tr><td valign="center" style="padding:3.7500pt 6.0000pt 3.7500pt 6.0000pt ;border-left:1.0000pt solid rgb(0,0,0);mso-border-left-alt:0.7500pt solid rgb(0,0,0);border-right:1.0000pt solid rgb(0,0,0);mso-border-right-alt:0.7500pt solid rgb(0,0,0);border-top:none;mso-border-top-alt:0.7500pt solid rgb(0,0,0);border-bottom:1.0000pt solid rgb(0,0,0);mso-border-bottom-alt:0.7500pt solid rgb(0,0,0);">古文字</td><td valign="center" style="padding:3.7500pt 6.0000pt 3.7500pt 6.0000pt ;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid rgb(0,0,0);mso-border-right-alt:0.7500pt solid rgb(0,0,0);border-top:none;mso-border-top-alt:0.7500pt solid rgb(0,0,0);border-bottom:1.0000pt solid rgb(0,0,0);mso-border-bottom-alt:0.7500pt solid rgb(0,0,0);">象形文字</td><td valign="center" style="padding:3.7500pt 6.0000pt 3.7500pt 6.0000pt ;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid rgb(0,0,0);mso-border-right-alt:0.7500pt solid rgb(0,0,0);border-top:none;mso-border-top-alt:0.7500pt solid rgb(0,0,0);border-bottom:1.0000pt solid rgb(0,0,0);mso-border-bottom-alt:0.7500pt solid rgb(0,0,0);">楔形文字</td><td valign="center" style="padding:3.7500pt 6.0000pt 3.7500pt 6.0000pt ;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid rgb(0,0,0);mso-border-right-alt:0.7500pt solid rgb(0,0,0);border-top:none;mso-border-top-alt:0.7500pt solid rgb(0,0,0);border-bottom:1.0000pt solid rgb(0,0,0);mso-border-bottom-alt:0.7500pt solid rgb(0,0,0);">甲骨文</td></tr></tbody></table>