在同等条件下，对30辆同一型号的汽车进行耗油1L所行走路程的试验，得到如下数据（单位：km）：
14.1 12.3 13.7 14.0 12.8 12.9 13.1 13.6
14.4 13.8 12.6 13.8 12.6 13.2 13.3 14.2
13.9 12.7 13.0 13.2 13.5 13.6 13.4 13.6
12.1 12.5 13.1 13.5 13.2 13.4
以前两位数为茎画出上面数据的茎叶图（只有单侧有数据），并找出中位数。
解：茎叶图如图所示：
中位数为
。
| Born on July 31, 1965, in Gloucestershire, England, Joanne Kathleen Rowling grew up in rural communities in the southwestern part of that country. Rowling’s childhood experiences (67) her future literary creations. She explored the English countryside, visiting (68) and historical sites which inspired her (69) . Although she disliked science and mathematics, courses, Rowling (70) in literature classes. She penned funny, fantastical tales to (71) her sister Diana and friends, (72) the Potter siblings whose name she later (73) for her wizardry novels. As a teenager, Rowling dreamed of becoming a (74) author whose books were sold in stores. She kept her ambitions a secret, (75) , because she feared criticism and discouragement from people who might declare that her writing was (76) . Rowling gradually became more self-confident and was (77) Head Girl during her final year at school. (78) languages at Exeter University in order to be (79) as a bilingual secretary, Rowling graduated with a degree in French and Classics. This (80) knowledge aided her later clever (81) of characters in the Harry Potter books. Rowling then (82) to Manchester for other office positions. She wrote fiction for adult readers but did not (83) it for publication She also often visited her (84) mother. It was during one of these train trips (85) Rowling began inventing characters and (86) . |
A．scholarly
B．objectively
C．extensively
D．academically