通过将题目主干复制到剪贴板。程序定时从剪贴板中取数据并在数据库中查找答案后，再复制进剪贴板。通过粘贴就能得到答案。-By Topic trunk copied to the clipboard. Program regularly take data from the clipboard and find answers in the database, and then copied into the clipboard. By pasting able to get an answer.