LeonMcCarthy,12,wasbornwithoutfingersonhislefthand.That...

問題詳情：

Leon McCarthy, 12, was born without fingers on his left hand. That didn’t stop him from being able to do many tasks. But Leon could not grasp more than one object at a time. So Leon’s father, Paul, created a prosthesis(假肢), using a 3D printer. Now Leon has fingers that open and close. “It was a do－it－yourself, father－and－son adventure,” says Paul.

When Leon was a baby, his doctor advised his parents not to give him a prosthetic hand until he was in his early teens. “The doctor said Leon should first learn to get full use out of the hand he was born with,” says Paul. As Leon got older, his father looked into buying a prosthetic hand, which can cost as much as $30,000. Paul found a more affordable solution.

One day, Paul discovered a video on the Internet about Robohand, a prosthesis created with a 3D printer. He downloaded the free instructions and called Robohand’s creators for advice. They told him all he needed was a 3D printer—which costs around $2,000—and some materials.

Luckily, Leon’s school had recently purchased a 3D printer and it offered to help Paul build the hand for Leon. “We used a soccer shin guard(護脛), cardboard, and tape. They cost about $10.”says Paul.

With his new hand, Leon can do things better. “I can help my mom more, because now I can carry two grocery bags,” he says.

Leon’s father has already built several hands for Leon. Leon helps design each one. He says there’s one thing in particular that he wants to do with a future prosthesis. “The goal,” he says, “is to be able to tie my shoelaces(鞋帶)．”

24. Why did Leon's doctor disapprove of his using a prosthesis in his childhood?

A. The prosthetic technology was underdeveloped then.

B. A prosthesis was very expensive at that time.

C. The original hand could do many tasks.

D. To master the disabled hand was important.

25. Leon’s father managed to get Leon a new hand by ________．

A. collecting money on the Internet       B. buying a prosthetic hand

C. purchasing a 3D printer              D. printing a hand

26. The materials used for Leon's hand can be described as ________．

A. cheap and common      B. strange and valuable

C. personal and lovely      D. basic and solid

27. What’s the best title for the text?

A. A DIY Enthusiast                                   B. A Helping Hand

C. A Great Adventure                                D. A Lucky Escape

【回答】

DDAB

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