private void 查看系统现有单词ToolStripMenuItem_Click(object sender, EventArgs e)
{
wordlist ob_wordlist_1 = new wordlist();
ob_wordlist_1.Show();
}
private void button1_Click(object sender, EventArgs e)
{
wordlist ob_wordlist_2 = new wordlist();
ob_wordlist_2.Show();
}