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<title>挑战题</title>
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<ul>
<li class="hidden">1</li>
<li>2</li>
<li class="hidden">3</li>
<li>4</li>
<li>5</li>
<li class="hidden">6</li>
<li class="hidden">7</li>
<li>8</li>
<li>9</li>
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<a href='#' onclick="lianjie()">更多</a>
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$("a").html("简化");
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