A. draw Chinese people’s attention to IELTS

　　B. remind language learners of the goal of learning

　　C. attract more foreigners to start business in China

　　D. give more chances for English learners in China

　　B

　　Quicker and faster 3-D printers have allowed not just amazing objects to be created, but have started to affect how doctors treat patients.

　　We’ve put together a list of some of the most amazing medical breakthroughs made possible with 3-D printing.

　　Life-Saving Airway

　　In 2017, doctors created a new airway for kaiba Gionfriddo, a boy born with an airway that kept collapsing (萎陷). To save his life doctors printed tiny tubes to join together in different shapes and sizes until one finally worked for Kaiba. It was placed in Kaiba’s bronchus (支气管) so that it no longer collapsed. Even more remarkably, once the plant was placed it could stay there. It’s designed to eventually be absorbed into the body.

　　New “Bionic” Hands

　　One of the most remarkable ways 3-D printing is now being used is as a way to create prosthetics (假肢). A boy born without an arm named Alex was able to get a new“bionic”hand thanks to it. Last year a college student spent 8 weeks coming up with a special prosthetic design that only cost a few hundred dollars in materials. He said he wanted to create a prosthetic far cheaper than other choices that can run tens of thousands of dollars.

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