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题型:单选题 题类:常考题 难易度:普通

【部分jx】上海市浦东新区第四教育署2019-2020学年七年级下学期英语期末试卷

The doctors did their best to fight against H7N9 bird flu and thought less about ______.
A、they B、their C、them D、themselves
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