A. to avoid psychological techniques . B. to break records C. to better understand the athlete’s body and mind D. to time and sp

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问题 A. to avoid psychological techniques .
B. to break records
C. to better understand the athlete’s body and mind
D. to time and space
E. to be replacing the sporting challenge
F. to human performance
We don’t know if there is a limit______.

选项

答案F

解析 根据第二段最后一句“Is there a limit to human performance or will athletes continue to gainseconds?”可知,本题选F。
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