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1 . But by any criteria this work is worth it to us as well, because it shows that we are global citizens interested in world stability, and that we feel responsible for others and are ready to ________ for mankind. (根据句意填空)
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2 . People’s lives have been changed by __________________ and social networks. (根据句意完成句子)
在线社区和社交网络改变了人们的生活。
在线社区和社交网络改变了人们的生活。
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