5.解析: 推理判断题。根据第二段开头部分中的内容可推知,本文是一篇研究报告。
答案: B
6.解析: 推理判断题。根据第四段中的“the players who had headed the ball more than about 1,100 times in the previous 12 months showed significant loss of white matter in parts of their brains”可推知,频繁地用头顶球对大脑有显著的影响。
答案: A
7.解析: 细节理解题。结合第四段中的 “loss of white matter in parts of their brains involved with memory”以及下一段的开头部分可知,记忆力的丧失可能与大脑中的白色物质缺失有关。
答案: C
8.解析: 词义猜测题。结合画线词前面的“worse at recalling lists of words”和“forgetting”可推知,fumbling与missing的意思最相近。
答案: D
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