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Eliud Kipchoge’s extraordinary sub-two-hour marathon in Vienna on Saturday is one of the greatest sporting achievements—recording a time that has never been achieved before, again. It is a time on the fringes (边缘) of what scientists believe is humanly possible.

“It is a great feeling to make history in sport after Sir Roger Bannister in 1954. I am the happiest man in the world to be the first human to run under two hours and I can tell people that no human is limited,” Kipchoge said afterwards.

Is he right? Where are the limits of human ability? And how close are we to reaching them?

Raph Brandon, head of science for England cricket, distinguishes between achievements which are constrained (限制) by human anatomy (解剖学), and those which require human determination or skill.

“When Bolt ran 9.58 in Berlin 10 years ago, if you analyse the split times it’s very hard to imagine where the improvement comes from,” said Brandon, “The Usain Bolt 100m or the two-hour marathon, they’re in that category.”

Multi-day, ultra-endurance events, such as Thomas’s cross-Channel swim, are different, Brandon said.

“They need determination, psychology and bloody-mindedness to go that little bit further. Those people will continue to do unique things because you’re not really taking the body to its anatomical limit. It’s more a question of how much you’re prepared to consume and exhaust yourself.”

And there’s a third category, those sporting endeavours (努力) that rely on hand-eye coordination: the goal tallies of Cristiano Ronaldo and Lionel Messi, and the batting of Virat Kohli Steve Smith or Don Bradman, who trained by hitting a golf ball with a stump against a wall to become the best batsman ever to play Test cricket.

Equipment has been a factor for many sports. NFL receivers wear gloves that enable them to make improbable one-handed catches. The GB cycling team swept the board at the Olympics because of their amazing new clothing tech.

The line between what is fair and unfair is blurry. Kipchoge’s sub-two-hour run will not be officially recognized. He ran behind a car which beamed a green laser on to the ground in front of him. Teams of pacemakers, 41 in total, ran in a v-formation to protect him from headwinds (逆风). He wore specially designed shoes and the time and date of the event were picked only after detailed weather forecasting.

Jo Davies, a sport psychologist, says recent studies have shown athletes can push themselves harder because of their perception of exhaustion.

Other research published this year which looked at athletes who had won multiple gold medals found that they were different in several important ways. They had often had a shocking and upsetting life experience and had suffered significant setbacks in their performance during their careers, as well as personality traits of determination, perseverance and perfectionism.

So whether or not those limits have been reached, there will be no shortage of people prepared to try to go beyond them.

1.Why is Eliud Kipchoge’s sub-two-hour marathon considered extraordinary?

A.It was made in Vienna on a weekend.

B.It pushed the limits of human ability.

C.It proved that there was no boundary of his achievements.

D.It was greater than the record kept by Sir Roger Bannister.

2.The Usain Bolt 100m and the two-hour marathon belong to the same category in that ________.

A.they need great determination or skills B.they can be achieved via equipment

C.they rely on hand-eye coordination D.they are reaching anatomical limit

3.Kipchoge’s sub-two-hour marathon will not be officially recognized because ________.

A.he was followed by pacemakers B.he was caught in headwinds

C.he got much special help D.he didn’t run on the picked day

4.It can be inferred from the last three paragraphs that ________.

A.Jo Davies believes that athletes make progress in the same way

B.anatomical limit prevents athletes from having sad life experience

C.an athlete who has suffered setbacks will win gold medals

D.whether an athlete can succeed or not may depend on himself

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