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题目内容
If 30 percent of the people surveyed use both of the methods "exercise near home or work" and "exercise outdoors", what percent of people surveyed use at least one of the two methods?
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· 相关考点
6.1.2 交集、并集、补集、全集关系
6.1.2 交集、并集、补集、全集关系
以上解析由 考满分老师提供。