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The worst pollution threat is concentrated in and near large cities. There the people-made pollutants increasingly surpass the ability of air and water to dilute (冲淡；稀释) the contaminants (污染物) to safe levels. The natural ecological cycle depends on plants, which absorb some pollutants and release oxygen to the air. But near large cities, natural vegetation becomes scarce, and introduced trees, ornamental shrubs and gardens are far from adequate in absorbing motor vehicle and industrial air pollutants. Finally, some pollutants, most notably atomic waste, may continue to contaminate air, land, and water for thousands of years. Therefore, ecocrisis—ecocatastrophe or ecocide—has been for some time one of the major concerns of not only the ecoactivists and environmentalists, but of many scientists of other fields and the government authorities of many countries as well.
下面（）体现了企业礼仪在企业文化建设中的作用。
现代企业会计的两大分支：除了财务会计还有（）。
重置价格的出现是技术进步的必然结果，同时也是"替代原理"的体现。（）
元明的杂剧传奇很多改编自唐传奇，如王实甫的《西厢记》改编自元稹的《（）》，郑光祖的杂剧《（）》改编自陈玄祐的《离魂记》、石君宝的《曲江池》改编自白行简的《（）》，汤显祖的《（）》改编自沈既济的《枕中记》。
下列属于聊天软件的是（）
小王丈夫的姑夫是小王的（）。
社会保障制度具有哪些功能。
（）不是招投标的基本特征。
某股票预计在2个月和5个月后分别派发股息1元/股，该股票目前价格是30元/股，所有期限的无风险连续利率均为6%，某投资者持有该股票6个月期的远期合约空头。 该远期价格等于（）元。
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