◎ 题干
The World Health Organization gave a warning to the public without any ____when the virus of H1N1 hit Mexico in April, 2009.
A.delayB.effortC.scheduleD.consideration Ks
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The World Health Organization gave a warning to the public without any ____when the virus of H1N1 hit Mexico in April, 2009.A.delayB.effortC.scheduleD.considera…”主要考查了你对  【可数名词及其单复数】【集合名词】【名词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。