document.write('<p>&nbsp;<img src=\"http://www.alatiku.com/d/file/shiti/7897336068e34db4a09e3341817af7ae.jpg\" alt=\"360截图20180810130811515.jpg\" width=\"392\" height=\"295\" /></p><p>3+6+9=18（块）答：共有方块 18 块。</p>');