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            <description><![CDATA[<a href="http://www.youku.com/v_show/id_XMjIzMTUwNTY=_rss.html"><img src="http://g2.ykimg.com/0100641F4647EC2205F2CB008478EFDF28F2AB-3E98-3631-AC93-254FA291A084" border="0" width="120" height="90" vspace="4" hspace="4" title="鸡兔同笼" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMjIzMTUwNTY=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="鸡兔同笼" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMjIzMTUwNTY=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="鸡兔同笼" target="_blank" /></a> <p></p>]]></description>
            <itunes:duration>04:24</itunes:duration>
            <itunes:keywords>奥数</itunes:keywords>
            <author>hnqylxy</author>
            <comments>http://www.youku.com/v_show/id_XMjIzMTUwNTY=_rss.html#comments</comments>
            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
            <guid>5578764</guid>
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        <item>
            <title>01加法和乘法[小学奥数竞赛辅导系列讲座三年级]</title>
            <link>http://www.youku.com/v_show/id_XMTQ3OTU2OTY=_rss.html</link>
            <description><![CDATA[<a href="http://www.youku.com/v_show/id_XMTQ3OTU2OTY=_rss.html"><img src="http://g2.ykimg.com/0100011F4647759219495D002A7D492CD6CAA2-DB4C-B1FA-9C5A-B47E08D36396" border="0" width="120" height="90" vspace="4" hspace="4" title="01加法和乘法[小学奥数竞赛辅导系列讲座三年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ3OTU2OTY=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="01加法和乘法[小学奥数竞赛辅导系列讲座三年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ3OTU2OTY=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="01加法和乘法[小学奥数竞赛辅导系列讲座三年级]" target="_blank" /></a> <p></p>]]></description>
            <itunes:duration>51:15</itunes:duration>
            <itunes:keywords>小学,数学,奥赛,加法,乘法,三年级</itunes:keywords>
            <author>xieyangfa</author>
            <comments>http://www.youku.com/v_show/id_XMTQ3OTU2OTY=_rss.html#comments</comments>
            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
            <guid>3698924</guid>
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        <item>
            <title>07幻方和数阵图[小学奥数竞赛辅导系列讲座三年级]</title>
            <link>http://www.youku.com/v_show/id_XMTQ3OTQ2MTY=_rss.html</link>
            <description><![CDATA[<a href="http://www.youku.com/v_show/id_XMTQ3OTQ2MTY=_rss.html"><img src="http://g2.ykimg.com/0100011F4647758785DF9D002A7D49460AA871-1826-3C34-56A6-AD57320A6DFE" border="0" width="120" height="90" vspace="4" hspace="4" title="07幻方和数阵图[小学奥数竞赛辅导系列讲座三年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ3OTQ2MTY=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="07幻方和数阵图[小学奥数竞赛辅导系列讲座三年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ3OTQ2MTY=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="07幻方和数阵图[小学奥数竞赛辅导系列讲座三年级]" target="_blank" /></a> <p></p>]]></description>
            <itunes:duration>36:10</itunes:duration>
            <itunes:keywords>小学,数学,奥赛,幻方,数阵图,三年级</itunes:keywords>
            <author>xieyangfa</author>
            <comments>http://www.youku.com/v_show/id_XMTQ3OTQ2MTY=_rss.html#comments</comments>
            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
            <guid>3698654</guid>
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        <item>
            <title>11和差问题[小学奥数竞赛辅导系列讲座三年级]</title>
            <link>http://www.youku.com/v_show/id_XMTQ3OTQ3ODg=_rss.html</link>
            <description><![CDATA[<a href="http://www.youku.com/v_show/id_XMTQ3OTQ3ODg=_rss.html"><img src="http://g1.ykimg.com/0100011F464B15DFB06326002A7D492A6D7564-F305-E80D-3796-D145247E010F" border="0" width="120" height="90" vspace="4" hspace="4" title="11和差问题[小学奥数竞赛辅导系列讲座三年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ3OTQ3ODg=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="11和差问题[小学奥数竞赛辅导系列讲座三年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ3OTQ3ODg=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="11和差问题[小学奥数竞赛辅导系列讲座三年级]" target="_blank" /></a> <p></p>]]></description>
            <itunes:duration>39:09</itunes:duration>
            <itunes:keywords>小学,数学,奥赛,和差问题,三年级</itunes:keywords>
            <author>xieyangfa</author>
            <comments>http://www.youku.com/v_show/id_XMTQ3OTQ3ODg=_rss.html#comments</comments>
            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
            <guid>3698697</guid>
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        <item>
            <title>09和倍问题[小学奥数竞赛辅导系列讲座三年级]</title>
            <link>http://www.youku.com/v_show/id_XMTQ3OTUyODQ=_rss.html</link>
            <description><![CDATA[<a href="http://www.youku.com/v_show/id_XMTQ3OTUyODQ=_rss.html"><img src="http://g2.ykimg.com/0100011F4647758F6D20B7002A7D499D3D5411-D549-11E4-2518-A3DB0556908F" border="0" width="120" height="90" vspace="4" hspace="4" title="09和倍问题[小学奥数竞赛辅导系列讲座三年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ3OTUyODQ=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="09和倍问题[小学奥数竞赛辅导系列讲座三年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ3OTUyODQ=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="09和倍问题[小学奥数竞赛辅导系列讲座三年级]" target="_blank" /></a> <p></p>]]></description>
            <itunes:duration>34:41</itunes:duration>
            <itunes:keywords>小学,数学,奥赛,和倍问题,三年级</itunes:keywords>
            <author>xieyangfa</author>
            <comments>http://www.youku.com/v_show/id_XMTQ3OTUyODQ=_rss.html#comments</comments>
            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
            <guid>3698821</guid>
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        <item>
            <title>06估算[小学奥数竞赛辅导系列讲座六年级]</title>
            <link>http://www.youku.com/v_show/id_XMTQ4NjcwNjQ=_rss.html</link>
            <description><![CDATA[<a href="http://www.youku.com/v_show/id_XMTQ4NjcwNjQ=_rss.html"><img src="http://g3.ykimg.com/0100011F464B18C38EAF0E002A7D496CFA6662-5831-9D5C-0D3D-C291900015CA" border="0" width="120" height="90" vspace="4" hspace="4" title="06估算[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ4NjcwNjQ=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="06估算[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ4NjcwNjQ=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="06估算[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <p></p>]]></description>
            <itunes:duration>113:08</itunes:duration>
            <itunes:keywords>小学,数学,奥赛,六年级,估算</itunes:keywords>
            <author>xieyangfa</author>
            <comments>http://www.youku.com/v_show/id_XMTQ4NjcwNjQ=_rss.html#comments</comments>
            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
            <guid>3716766</guid>
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            <title>08工程问题[小学奥数竞赛辅导系列讲座六年级]</title>
            <link>http://www.youku.com/v_show/id_XMTQ4NjczNjg=_rss.html</link>
            <description><![CDATA[<a href="http://www.youku.com/v_show/id_XMTQ4NjczNjg=_rss.html"><img src="http://g1.ykimg.com/0100011F4647767A38619C002A7D498C8BD5EF-A7F3-54A5-67E6-125A76D3BBAF" border="0" width="120" height="90" vspace="4" hspace="4" title="08工程问题[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ4NjczNjg=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="08工程问题[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ4NjczNjg=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="08工程问题[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <p></p>]]></description>
            <itunes:duration>117:23</itunes:duration>
            <itunes:keywords>奥赛,小学,六年级,数学,工程问题</itunes:keywords>
            <author>xieyangfa</author>
            <comments>http://www.youku.com/v_show/id_XMTQ4NjczNjg=_rss.html#comments</comments>
            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
            <guid>3716842</guid>
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            <title>07分数应用题01[小学奥数竞赛辅导系列讲座六年级]</title>
            <link>http://www.youku.com/v_show/id_XMTQ4NjQ1ODQ=_rss.html</link>
            <description><![CDATA[<a href="http://www.youku.com/v_show/id_XMTQ4NjQ1ODQ=_rss.html"><img src="http://g3.ykimg.com/0100011F46477670C68924002A7D493382052D-3B63-31D0-12FF-5D9AD71DD1FF" border="0" width="120" height="90" vspace="4" hspace="4" title="07分数应用题01[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ4NjQ1ODQ=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="07分数应用题01[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ4NjQ1ODQ=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="07分数应用题01[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <p></p>]]></description>
            <itunes:duration>90:16</itunes:duration>
            <itunes:keywords>小学,数学,奥赛,六年级,分数,应用题,分数应用题</itunes:keywords>
            <author>xieyangfa</author>
            <comments>http://www.youku.com/v_show/id_XMTQ4NjQ1ODQ=_rss.html#comments</comments>
            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
            <guid>3716146</guid>
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        <item>
            <title>03分数和小数[小学奥数竞赛辅导系列讲座六年级]</title>
            <link>http://www.youku.com/v_show/id_XMTQ4Mjk0NDQ=_rss.html</link>
            <description><![CDATA[<a href="http://www.youku.com/v_show/id_XMTQ4Mjk0NDQ=_rss.html"><img src="http://g2.ykimg.com/0100011F464775FDA9E228002A7D490D3C48CF-D2A2-A526-C01E-92AC458BB6CD" border="0" width="120" height="90" vspace="4" hspace="4" title="03分数和小数[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ4Mjk0NDQ=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="03分数和小数[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ4Mjk0NDQ=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="03分数和小数[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <p></p>]]></description>
            <itunes:duration>68:37</itunes:duration>
            <itunes:keywords>奥赛,小学,六年级,数学,分数,小数</itunes:keywords>
            <author>xieyangfa</author>
            <comments>http://www.youku.com/v_show/id_XMTQ4Mjk0NDQ=_rss.html#comments</comments>
            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
            <guid>3707361</guid>
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            <title>04分数大小的比较[小学奥数竞赛辅导系列讲座六年级]</title>
            <link>http://www.youku.com/v_show/id_XMTQ4NzA4Njg=_rss.html</link>
            <description><![CDATA[<a href="http://www.youku.com/v_show/id_XMTQ4NzA4Njg=_rss.html"><img src="http://g2.ykimg.com/0100011F464B073B0DD1A7002A7D491D27BFE3-F9C5-B606-46C3-6EF57FCA29BF" border="0" width="120" height="90" vspace="4" hspace="4" title="04分数大小的比较[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ4NzA4Njg=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="04分数大小的比较[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ4NzA4Njg=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="04分数大小的比较[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <p></p>]]></description>
            <itunes:duration>94:00</itunes:duration>
            <itunes:keywords>小学,数学,奥赛,六年级,分数</itunes:keywords>
            <author>xieyangfa</author>
            <comments>http://www.youku.com/v_show/id_XMTQ4NzA4Njg=_rss.html#comments</comments>
            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
            <guid>3717717</guid>
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        <item>
            <title>05分数的巧算巧算5[小学奥数竞赛辅导系列讲座六年级]</title>
            <link>http://www.youku.com/v_show/id_XMTQ4Njg4MDQ=_rss.html</link>
            <description><![CDATA[<a href="http://www.youku.com/v_show/id_XMTQ4Njg4MDQ=_rss.html"><img src="http://g1.ykimg.com/0100011F46477681200C8A002A7D4992AFDA58-20F7-80C0-2662-C5B5FE545B82" border="0" width="120" height="90" vspace="4" hspace="4" title="05分数的巧算巧算5[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ4Njg4MDQ=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="05分数的巧算巧算5[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ4Njg4MDQ=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="05分数的巧算巧算5[小学奥数竞赛辅导系列讲座六年级]" target="_blank" /></a> <p></p>]]></description>
            <itunes:duration>112:01</itunes:duration>
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            <author>xieyangfa</author>
            <comments>http://www.youku.com/v_show/id_XMTQ4Njg4MDQ=_rss.html#comments</comments>
            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
            <guid>3717201</guid>
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        <item>
            <title>02等差数列数列1奥数竞赛辅导系列讲座(四年级)</title>
            <link>http://www.youku.com/v_show/id_XMTQ5NjQ3NzY=_rss.html</link>
            <description><![CDATA[<a href="http://www.youku.com/v_show/id_XMTQ5NjQ3NzY=_rss.html"><img src="http://g1.ykimg.com/0100011F4647784EB02933002A7D490A41904D-C51E-60D4-8F68-ED4834651DBD" border="0" width="120" height="90" vspace="4" hspace="4" title="02等差数列数列1奥数竞赛辅导系列讲座(四年级)" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ5NjQ3NzY=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="02等差数列数列1奥数竞赛辅导系列讲座(四年级)" target="_blank" /></a> <a href="http://www.youku.com/v_show/id_XMTQ5NjQ3NzY=_rss.html"><img src="http://g1.ykimg.com/" border="0" width="120" height="90" vspace="4" hspace="4" title="02等差数列数列1奥数竞赛辅导系列讲座(四年级)" target="_blank" /></a> <p></p>]]></description>
            <itunes:duration>64:36</itunes:duration>
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            <author>xieyangfa</author>
            <comments>http://www.youku.com/v_show/id_XMTQ5NjQ3NzY=_rss.html#comments</comments>
            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
            <guid>3741194</guid>
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            <title>12长、正方形的面积-奥数竞赛辅导系列讲座(四年级)</title>
            <link>http://www.youku.com/v_show/id_XMTUzNzcyMjA=_rss.html</link>
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            <itunes:duration>38:36</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>差数列--数列2</title>
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            <itunes:duration>64:36</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>错位相减求和</title>
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            <itunes:duration>51:51</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>拆项消去求和</title>
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            <itunes:duration>23:35</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>长、正方形的面积</title>
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            <itunes:duration>65:17</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>递推和归纳找规律5</title>
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            <itunes:duration>101:22</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>分数大小的比较</title>
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            <itunes:duration>94:01</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>分数和小数</title>
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            <itunes:duration>68:37</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>分数应用题</title>
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            <itunes:duration>90:16</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>分组求和</title>
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            <itunes:duration>66:31</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>工程问题</title>
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            <itunes:duration>51:24</itunes:duration>
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            <itunes:duration>51:15</itunes:duration>
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            <itunes:duration>59:31</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <itunes:duration>40:53</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>平面图形的面积2</title>
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            <itunes:duration>53:06</itunes:duration>
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            <itunes:duration>35:29</itunes:duration>
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            <title>数列求和的应用-----数列2</title>
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            <itunes:duration>55:07</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>数字谜3</title>
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            <itunes:duration>54:58</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>图形的计算3</title>
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            <itunes:duration>57:35</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>尾数的规律</title>
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            <itunes:duration>42:26</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>行程问题</title>
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            <itunes:duration>83:33</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>行程问题3</title>
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            <itunes:duration>55:48</itunes:duration>
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            <title>行程问题4</title>
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            <itunes:duration>61:46</itunes:duration>
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            <itunes:duration>39:45</itunes:duration>
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            <title>新规定的运算</title>
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            <itunes:duration>57:04</itunes:duration>
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            <title>小数的巧算巧算4</title>
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            <itunes:duration>75:22</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>小学奥数数列求和数列3公式求和</title>
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            <itunes:duration>32:59</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>小学奥数数图形计数问题1</title>
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            <itunes:duration>50:04</itunes:duration>
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            <pubDate>Thu, 10 Dec 2009 22:05:24 +0800</pubDate>
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            <title>小学奥数填算式数字谜</title>
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            <itunes:duration>49:13</itunes:duration>
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