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含金量 shuo shi lun wen gen he xin qi kan na ge han jin liang gao
学校 难易 核心程度 xue xiao pai ming gen xue xiao he xin qi kan nan yi cheng du
c s s c i qi kan gen s c i
s c i e n c e gen n a t u r e qi kan
c l s c i qi kan yi wei zhuo shi me
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