题目

             Break Your Bad MoodHaving one of those days or weeks when everything seems to annoy you? Even if you do nothing about it, your bad mood will probably go away after some time. But with a little effort, you can forget it much faster often within a day or two.Walk it offExercise is the most popular bad-mood buster. A person who’s in a bad mood his low energy and high tension. Taking a fast ten-minute walk, or doing some quick exercise can do wonders towards changing that bad mood.Tune it outListening to your favorite music for a while can also make tension go away qui某原子核外共有6个电子，分布在K与L电子层上，其基态原子在L层分布中正确的是（ ）A．B．C．D．