【单选题】【消耗次数：1】
This is a _____ moment for our research. We should be careful.
①
critical
②
belt
③
conscience
④
copper
参考答案：
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相关题目
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The question came up at the meeting ___ we had enough money for our research.
①
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②
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③
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②
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①
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②
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③
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④
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①
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②
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③
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①
as polite as possible
②
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③
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④
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①
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②
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③
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④
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随机题目
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①
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②
它们都提供www服务
③
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④
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“文件”选项卡中，在“保存并发送”选项中选择
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直接保存幻灯片文件
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超级链接幻灯片文件
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