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16.n.氧oxygen.

分析 oxygen

解答 答案是oxygen;
考查词义识记;oxygen n.氧气,不可数;如:No living things can live without oxygen.没有氧气生物就无法生存.

点评 对于单词短语的识记,要从词义着手,理解词性和常见用法或搭配,并能在语境中灵活运用.

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Passage outlineSupporting details
Passage outlineSupporting details
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