阅读下面短文，从每题所给的A、B、C、D四个选项中选出最佳选项。
I’ve been motivated — and demotivated — by other folks’ achievement s all my life.
When I was a teenager, a neighborhood friend （1） a marathon race. Feeling motivated, I started running （2） , but then two things happened. First, a girl I met one day told me she was （3） for a “super,” referring to a 52.4-mile double marathon. Then, the next day I went on my longest run — 15 miles. To be honest, I （4） it! Between the girl making my （5） seem small and the pure boredom of jogging, I decided that the only （6） I’d ever run again is if a big dog was running after me!
So I （7） cycling. I got a good bike and rode a lot. I （8） of entering cycle races until I flew to San Diego to visit my sister. While she was at work one day, I （9） her bike and went for a ride. The （10） : The roads there went through large valleys where I’d be riding uphill for miles at a time. I’d never faced such （11） . That day, I got （12） by about 100 “local” bikers who were used to such roads. When I got back home, suddenly riding my bike didn’t seem quite as （13） .
I’ve （14） a lot since then. I’ve come to accept that whatever （15） I set for myself, they just have to be my own.
（1）
| A． |
knew |
B． |
held |
C． |
won |
D． |
quit |
（2）
| A． |
regularly |
B． |
silently |
C． |
proudly |
D． |
recently |
（3）
| A． |
asking |
B． |
looking |
C． |
waiting |
D． |
training |
（4）
| A． |
made |
B． |
believed |
C． |
hated |
D． |
deserved |
（5）
| A． |
advantage |
B． |
achievement |
C． |
contribution |
D． |
influence |
（6）
| A． |
way |
B． |
risk |
C． |
place |
D． |
reason |
（7）
| A． |
gave up |
B． |
went on |
C． |
turned to |
D． |
dealt with |
（8）
| A． |
heard |
B． |
dreamed |
C． |
complained |
D． |
approved |
（9）
| A． |
painted |
B． |
borrowed |
C． |
bought |
D． |
parked |
（10）
| A． |
problem |
B． |
secret |
C． |
principle |
D． |
advice |
（11）
| A． |
dangers |
B． |
events |
C． |
opponents |
D． |
challenges |
（12）
| A． |
passed |
B． |
convinced |
C． |
admired |
D． |
stopped |
（13）
| A． |
reliable |
B． |
convenient |
C． |
familiar |
D． |
appealing |
（14）
| A． |
traveled |
B． |
matured |
C． |
missed |
D． |
worried |
（15）
| A． |
limits |
B． |
dates |
C． |
goals |
D． |
tests |