(单选题)
经常参加锻炼的人，安静时心率比一般人（ ）。
A.快
B.相等
C.略快
D.慢
参考答案：D
参考解析：
经常参加体育锻炼的人，心肌发达，心壁较厚，搏动有力，每搏输出的血量比一般人的要大，在安静状态下的心率比一般人的慢。故本题选D。
知识点：运动与血液循环机能 体育理论基础知识 运动生理学 教师招聘-小学 体育
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