2018年6月英语四级阅读答案：试卷三仔细阅读1（新东方版）
分类: 大学四六级英语
46.A.Not all of them are symptoms of dementia.
47.C.Communication within our brain weakens.
48.B.Inability to recall details of one’s life experience.
49.C.Turn to a professional for assistance.
50.D.Staying active both physically and mentally