A、<span style="font-size:14px;font-family:宋体">综合性</span>
B、<span style="font-size:14px;font-family:宋体">直接性</span><span style="font-size:14px;font-family:'Calibri','sans-serif'"> </span>
C、<span style="font-size:14px;font-family:宋体">应用性</span>
D、<span style="font-size:14px;font-family:宋体">社会历史性</span><span style="font-size:14px;font-family:'Calibri','sans-serif'"> </span>
E、<span style="font-size:14px;font-family:宋体">未来性</span>
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