◎ 题干
We know that 80          of the cases of blindness can          .
A.per cents; cureB.percent; curedC.per cent; be curedD.percent; are cured
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“We know that 80 of the cases of blindness can .A.per cents; cureB.percent; curedC.per cent; be curedD.percent; are cured…”主要考查了你对  【基数词】【序数词】【时刻】【分数】  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。