go for an outing = go hiking 徒步旅行 a hairdresser 美发师 dress hair 美发 The rats used the number of sounds, rather than the sound’s continuous amount, to make choices associated with food rewards. 老鼠是根据声音的数量，而不是声音的持续时间，来做出与食物奖励相关的选择的。The benefits of gratitude go beyond emotional well-being. It can also enhance physical health. 感恩的好处不仅仅是情感上的健康。它还可以增强身体健康。What makes hair significant to Lauren is not that she thinks hair is a necessity, but because of her profession, which means she makes a living from hair. 劳伦认为头发很重要并不是因为她认为头发是必需品，而是因为她的职业，这意味着她靠头发谋生。
21–23 DAD 24–27 BADD 28–31 CCAB
32–35 BCCA 36–40 BDFCE
41–45. DBACD 46–50. BADCA 51–55. BDCAD
56. various/varied 57. to calm 58. is priced 59. and 60. an
61. primarily 62. centers/is centered 63. which 64. offering 65. today’s
