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填空题
What’s special about the keyboard?Its keys are ____.
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参考解析
解析：
简答填空题。从提示信息可推知，所缺内容为描述主语状态、特征的词。根据关键词句“Its big keys are particularly easy to use”可知，由于老年人视力不好，故设计的键盘很大，以适合老年人使用。故此处应填big。
简答填空题。从提示信息可推知，所缺内容为描述主语状态、特征的词。根据关键词句“Its big keys are particularly easy to use”可知，由于老年人视力不好，故设计的键盘很大，以适合老年人使用。故此处应填big。
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