问题
单项选择题
心血管系统的影响经常参加体育锻炼的人，心跳频率和血压的变化比一般人（）
A.一样
B.大
C.小
D.以上答案全不对
答案
参考答案：C
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心血管系统的影响经常参加体育锻炼的人，心跳频率和血压的变化比一般人（）
A.一样
B.大
C.小
D.以上答案全不对
参考答案：C
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