老师您好，我有几个专八的改错题想请教您，麻烦老师有空的话帮我看看，谢谢老师！

①Bosses seemed oblivious to the dangers,with more than half,believing it to be harmful.(老板们似乎没有察觉到使用行业术语的危险，超过一半的人相信它是无害的)        问:答案是将harmful改成harmless，那可不可以在to be  harmful之前加上not呢？ ②Pointing at his new designed map,Tom proudly said that it was not a piece of paper,but a record of geographically organized information      问:为什么不可以用两个形容词并列修饰information呢？原文是geographical organized information，可以不改吗？ ③Rachel Trickett, honorary fellow and former principal of St. Hugh’s College, Oxford, says that the notion of a "lady" protects women rather than demeaning them.      问:为什么rather than前后的时态不一致呢？不需要将demeaning改成demean吗？ ④French is not the private property of Frenchmen, as English of English people      问:这题把表示肯定的as改成nor，是否是nor+助动词+主语的结构呢？助动词跟主句相同的时候可以省略吗？