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<title>我的第一堂课</title>
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<h3 style="color:brown;text-align:center;font-size:20px;"
onmouseover ="change(this)" onmouseout="old(this)">咏鹅</h3>
<p>鹅，鹅，鹅，曲项向天歌。</p>
<p>白毛浮绿水，红掌拨清波。</p>
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