Running is often tiring and a lot of hard work, but nothing beats the feeling you get after finishin


阅读理解D
【解题导语】 本文主要探究了影响运动者情绪的因素。
12.B 解析:细节理解题。根据第三段可知,德国一些大学的科学家们最近发现了跑步后的快感是由内源性大麻素引起的,故选B。
13.C 解析:推理判断题。根据对第二段和第三段的整体理解,并结合第四段“To test this theory, the scientists turned to mice.”可推知,科学家们拿老鼠做实验是为了确定究竟是哪种物质会引起跑步者的情绪高涨,故选C。
14.D 解析:词义猜测题。根据对全文内容的理解可知,该词所在句子与第二段“But while it’s long been believed that endorphins(内啡肽)—chemicals in the body that cause happiness—are behind the so­called ‘runner’s high’,a study suggested that there may be more to this phenomenon than we previously knew.”呼应,并结合本句结构可推知,此处notion与believed相呼应,故选D。
15.B 解析:细节理解题。根据倒数第三、四段和倒数第二段第二句“Regular exercise can boost your mood if you have depression, and it’s especially useful for people with mild to moderate(中等的) depression”可知,定期锻炼有利于情绪好转,缓解抑郁症状,故选B。
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