In the 21st century, all nations must take their ________of responsibility for the global safety.
A．blameB．chargeC．shareD．notice
C
名詞辨析。A責(zé)備；B要價(jià)，索價(jià)；C份額；D通知；結(jié)合句意可知C正確。句意：在21世紀(jì)，所有的國家都要承擔(dān)起世界安全的重任。故C正確。
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