At least 30 percent of the government speeches abandon ______ tones and embraced the most popular cyber words developed by Chinese netizens in the past year, for example, fuyun (floating cloud, indicating vanity).A.seriousB.bureaucraticC.abstractD.ridiculous
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B解析这题考查词义辨析：serious严重的，bureaucratic官僚的abstract抽象的， ridiculous荒诞的，句意是：至少百分之30的政府演讲放弃官僚主义和接受中国网民在过去的一年中开发的最流行的网络词汇，例如，浮云，表明虚荣。