A. the author's horse outran the girl's horses the whole time

　B. the author was confident that Tawny was in control

　C. the girls were so anxious to win that they sweated a lot

　D. the author's good performance took Taylore by surprise

3. When the race ended, the author's heart pounded because ________.

　A. he was feeling thrilled and young

　B. it was really tough exercise for him

　C. he was worried that the girls might be in danger

　D. he felt quite embarrassed that he had lost the race

4. The phrase ＂ kick up my heels＂ at the end can be replaced by _________.

　A. devote myself

　B. enjoy myself

　C. accept my challenge

　D. take part in running competition

　　【文章大意】文章描述作者和两个女孩骑马比赛，这让作者感到兴奋，也感到虽然自己上了年纪，但是有一颗年轻的心。

1.A【解析】细节理解题。根据文章第三段的＂We were two miles from home when, for some unexplainable reason,I pushed Tawny into a gallop(飞驰). The other horses were anxious to catch up, and just like that, the race was on.＂可知，作者的马飞驰起来使得其它马想要赶上。故选A。

3.A【解析】推理判断题。根据文章最后一段的＂I was still nervous from the crazy pace. My heart pounded too, but not from exercise. ...Because despite my wrinkles (皱纹), glasses and gray hair, I was feeling young at heart.＂可知，比赛结束的时候，作者的心狂跳因为他感觉兴奋而且年轻。故选A。