◎ 题干
The story happened in________ and the hero was in his________.
A.1840s;thirtyB.the 1840s;thirty
C.1840s;thirtiesD.the 1840s;thirties
◎ 答案
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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 story happened in________ and the hero was in his________.A.1840s;thirtyB.the 1840s;thirtyC.1840s;thirtiesD.the 1840s;thirties…”主要考查了你对  【序数词】【小数】【分数】【量词】  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。