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[2020·ÁÙÒÊÊиßÈýÏÂѧÆÚÄ£Äâ]Five years ago,  Yellow­Purple tore a flexor tendon(Çü¼¡ëì), making it difficult to use her left leg.  The little penguin was having a hard time walking and swimming.

Yellow­Purple lives with a large group of African penguins at Mystic Aquarium in Mystic, Connecticut. African penguins are an endangered species. They are beautiful, black and white birds that are about two feet tall when fully grown, and they are very popular with the Aquarium's visitors.

The staff at the Aquarium made a little support boot for Yellow­Purple from plastic. This supported her left ankle and made it much easier for her to do all the things that penguins like to do. Yellow­Purple was getting along fine with her boot, but then Dr. Jen Flower,  Chief Clinical Veterinarian at Mystic Aquarium, heard about 3­D printing technology. She decided to use it to help better the boot.

Luckily, Mystic Aquarium's Vice President of Education & Conservation, Kelly Matis, knew that Mystic Middle School had recently acquired a 3­D Systems printer. Kelly reached out to the school and arranged a meeting. Sue Prince, Library Media Specialist at Mystic Middle School, and seven middle school students visited Yellow­Purple to learn what was needed, and then contacted the supplier of their 3­D printer, ACT Group.

With ACT Group's help, the students learned how to scan Yellow­Purple's existing foot cast, then use that data to create a more efficient boot with sculpting software. The final boot design was printed on a 3­D printer using multiple materials, allowing the boot to be flexible enough for comfortable movement, yet hard enough to support the injured tendon.

The students were thrilled when they saw Yellow­Purple walking almost back to normal.  It was a great way to put science into practice. Celebrities like Ashton Kutcher shared Yellow­Purple's story on Facebook, inspiring more than 1.5 million combined views.

1£®What can we learn about African penguins?

A£®They are very large in number.

B£®They are dangerous species.

C£®They are beautiful when young.

D£®They are attractive to visitors.

2£®Who came up with the idea of an updated support boot?

A£®The ACT Group.¡¡¡¡¡¡B£®Dr. Jen Flower.

C£®Kelly Matis.         D£®Sue Prince.

3£®What preparation work was done before the students got the ACT Group's help?

A£®They reached school on time. 

 B£®They held a meeting to discuss the problem.

 C£®They paid a visit to Yellow­Purple.

 D£®They contacted the ACT Group for supplies.

4£®What is the best title for this text?

A£®The Development of 3­D Printing

B£®A Penguin Benefiting from High­tech

C£®An Effort to Put Science into Practice

D£®A Software That Can Design