[单项选择]What do employees need in order to use the center
A. The activities director’s permission
B. The regular employee ID
C. A recreational ID card form
D. A special ID card

41. What do you need in order to be a record breaker
Sports experts agree that the single most important factor in creating a champion is genetic make-up: the possession of genes that impart an innate ability to stride, leap, burn energy efficiently or suck lots of oxygen from the air. The great athletes are genuine statistical outliers... physiological freaks, says sports scientist Craig Sharp of Brunel University in Middlesex, UK.
42. How will we find or create the next generation of champion athletes
The most likely way is to widen our search to find someone with a genetic make-up that allows him or her to surpass other athletes. When East African runners began competing internationally, for example, it became apparent that their light frames make them uniquely economical in their use of energy.
43. Have we reached the limit of human performance
No, but records are being broken by ever narrower margins. When statisti

(41) What do you need in order to be a record breaker
Sports experts agree that the single most important factor in creating a champion is genetic make-up., the possession of genes that impart an innate ability to stride leap, burn energy efficiently or suck lots of oxygen from the air. "The great athletes are genuine statistical outliers... physiological freaks," says sports scientist Craig Sharp of Brunel University in Middlesex, UK.
(42) How will we find or create the next generation of champion athletes
The most likely way is to widen our search to find someone with a genetic makeup that allows him or her to surpass other athletes. When East African runners began competing internationally, for example, it became apparent that their light frame make them uniquely economical in their use of energy.
(43) Have we reached the limit of human performance
No, but records are being broken by ever narrower margins.