题目内容
旅游团在过边检时,领队应始终走在____ a、团队的最前 b、团队的中间 c、团队的最后 d、团队间前后穿梭
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Use what you have learned to write an introduction for the following topic Topic:The Benefits of Exercises Requirements: The paragraph should have three parts, hook, background and thesis. The information should be arranged from general to specific. The hook should be interesting and attractive. The background should be related to the topic and helpful for the readers. The thesis should include three parts, topic, opinion and points. The thesis should be specific, concise, powerful and disputable.
钝化理论最成熟的有:()
钝化膜的膜层当较薄时,有可能为电子导体。
钝化膜和化学转化膜是一样的概念,不同的叫法。
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