【单选题】【消耗次数：1】
清朝统治者认为，天朝物产丰富，无须同外国人互通有无，于是实行了什么政策使中国逐渐落后于世界潮流（ ）闭关锁国政策。
①
闭关锁国政策
②
鼓励海外贸易
③
重本抑末政策
④
禁海政策
参考答案：
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下列关于闭关锁国的评述，不正确的是（ ）。
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中国逐渐落伍于世界
②
阻碍了手工业的进步和发展
③
不能充分同外国进行科技文化交流
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对西方殖民者的侵略有完全自卫作用
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