The average age ( ) is between 35 and 55 among these members. ( 章节：3 难度：2)_做题室

单项选择题The average age ( ) is between 35 and 55 among these members. ( 章节：3 难度：2): A、range; B、limit; C、term; D、bound

正确答案：A
答案解析：
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