(  )not only involves exchanges among customers,business par

(  )not only involves exchanges among customers,business partners and vendors,bu

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2007年和2003年相比,第一产业的就业人数约下降了( )。

2007年和2003年相比,第一产业的就业人数约下降了( )。

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Despite repeated __________by educational authorities for co

Despite repeated __________by educational authorities for concrete measures to r

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