◎ 题干
Things made of plastic are usually _______, but they are _______ to get polluted.
A.cheap; easyB.cheap; easierC.cheaper; easyD.cheaper; easier
◎ 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“Things made of plastic are usually _______, but they are _______ to get polluted.A.cheap; easyB.cheap; easierC.cheaper; easyD.cheaper; easier…”主要考查了你对  【形容词的比较级,形容词的最高级】【时间副词】【地点副词】【副词】  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。