作者：阿企

@雪儿开心网, 用过牛津高阶的人都是很用心学习的，呵呵 <div class="vote" id="vote-1611"><span id="acv_stat_1611"></span><a class="acvclick acv4" id="vote4-1611" href="javascript:acv_vote(1611,1);">顶</a>(<span id="cos_support-1611">0</span>)<a class="acvclick acva" id="votea-1611" href="javascript:acv_vote(1611,0);">踩</a> (<span id="cos_unsupport-1611">0</span>)</div>