完形填空 One afternoon, I went to pick up my mother from work.I got there a little early, so I 1 my car by a small park, and 2 for her. As I looked outside the car window, I saw a little boy, around two years old, running 3 on the grass as his mother 4 from a short distance. The boy had a big smile on his face as if he had just been 5 free from some sort of prison .  The boy would then fall to the grass , 6 up ,   without looking back at his mother , run as 7 as he could ,again , still with a smile on his face ,as if nothing had happened . At that moment, I thought to myself , 'why aren't most adults this way ?' Most adults, when they fall down, make a big deal out of it and don't even 8 a second attempt. They would be so 9 that they would not try again if someone saw them fall .Or , because they fall , they would find a good 10 for themselves that they're not fit for it . They would end up too afraid to attempt again for fear of failure. However, with kids, when they fall down, they don't consider their falling down as a failure, instead, they treat it as a 11 experience. They try again and again until they 12 .The answer must be that they have not connected'falling down' with the word 'failure'. As a 13 , they are not discouraged in any way . Besides, they 14 think to themselves that it's quite okay to fall down and that it's not wrong to do so. In other words ,they allow themselves to make 15 , so they remain energetic. I was deeply impressed by the boy's persistence (坚持不懈) and the manner in which he did. (     )1. A. left (     )2. A. waited (     )3. A. carefully (     )4. A. w atched (     )5. A. cut (     )6. A. hold (     )7. A. well (     )8. A. make (     )9. A. confused (     )10.A. cause (     )11.A. learning (     )12.A. progress (     )13.A. decision (     )14.A. hardly (     )15.A. mistakes B. stopped B. cared B. anxiously B. noticed B. kept B. get B. long B. provide B. embarrassed B. sign B. running B. improve B. result B.perfectly B. choices C. repaired C. prepared C. freely C. surveyed C. found C. end C. fast C. practice C. exhausted C. chance C. teaching C. achieve C. reason C. probably C. plans D. drove D. looked D. easily D. supported D. set D. pick D. soon D. discover D. surprised D. excuse D. falling D. succeed D. matter D. nearly D. wishes