2019年6月英语六级阅读理解全真模拟题(3-4)
距离考试还有两个多月了，一起来试试小编为你精心准备的2019年6月英语六级阅读理解全真模拟题(3-4)，希望能够帮助到你考试，想知道更多相关资讯，请关注网站更新。2019年6月英语六级阅读理解全真模拟题(3)Recent research has claimed that an excess of positive ions in the air can have an ill effect on people’s physical or psychological health. What are positive ions? Well, the air is full of ions, electrically charged particles, and generally there is a rough balance between the positive and the negative charged. But sometimes this balance becomes disturbed and a larger proportion of positive ions are found. This happens naturally bef... [ 查看全文 ]2019年6月英语六级阅读理解全真模拟题(3-4)的相关文章
