</SPAN>假期</SPAN>
        </SPAN> 走过祖国的山山水水</SPAN>
        </SPAN> 呼吸着清新的空气</SPAN>
        </SPAN> 想起</SPAN>
        </SPAN> 污染过的河流</SPAN>
        </SPAN> 不满粉尘的空气</SPAN>
        </SPAN> 不免心生‘忧虑’</SPAN>
        </SPAN> 如果——</SPAN>
        </SPAN> 人类还不停止向自然的‘索取’</SPAN>
        </SPAN> 如果——</SPAN>
        </SPAN> 人类还不迅速向自然的‘付出’</SPAN>
        </SPAN> 我们将——</SPAN>
        </SPAN> 再找不到</SPAN>
        </SPAN> 一寸蓝天</SPAN>
        </SPAN> 一口空气</SPAN>
        </SPAN>我们无处可去</SPAN>
        切记！索取引发索取...... </SPAN></SPAN>
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