[单项选择]Studies reveal that people spend two hours dreaming every night, no matter what they（　）during the day.
A. should do
B. would have done
C. may have done
D. must do

Olympic athletes spend hours training, starting at an early age. Many athletes are strong and excellent in their sport but never (36) it to the Olympics. (37) who often do don’t win medals. Wilma Rudolph (38) made it to the Olympics, she won three gold medals. (39) that was amazing Wait (40) you hear the rest of the story!
Wilma Rudolph was born in 1940. When she was young she had polio (小儿麻痹症). (41) left her without the (42) of one of her legs. Her family helped her (43) massaging her leg every day. (44) she was able to walk (45) a special shoe. (46) about three years she didn’t need the shoe (47) .
In high school, Wilma played basketball and (48) track. She broke all the state basketball (49) and won all her track (50) . In 1960, Wilma went to the Olympics in Italy. She won three gold meda Is. (51) , she became a coach, an athletic co
A. ran
B. jumped
C. walked
D. swam