[解析]
(1)A.细节理解题.根据文章中第一段所描述的She needs to warm up to situations,is hesitant to try new things以及But when that comfort zone is not around her,she is shy and nervous.,可知Kelly是一个慢热型的人,如果有新的情况,必然需要一段较长的时间适应,故选A.
(2)B.推理判断题.根据第三段中的We practiced transitions from swim to bike to run with her,we got all the equipment she'd need,and we kept talking about the race,可知道作者全家都是在给Kelly加油的,故选B.
(3)A.推理判断题.根据文章第四段的内容,尤其是she jumped into the water,my heart soared,可推断作者当时的心情是又激动又自豪的,故选A.
(4)D.细节理解题.根据文章第五段中的It was because she was afraid of something and conquered that fear with confidence and a fire I hadn't seen before以及第六段中的 I felt like I won that day,可知她已经克服了她的恐惧了,故选D.