失去一两条肢体对大多数动物来说都意味着死亡。幸运的是，创新技术现在使我们能够为各种动物制造假肢！多亏了3D打印技术，俄罗斯一只名叫Dymka的猫有了四只钛制的脚，这给了她新的生命！

Until recently, losing a limb(肢) or two meant certain death for most animals. Luckily, new technology now enables us to create prostheses(假肢) for animals of all kinds! Thanks to 3D printing, for example, a cat named Dymka got four titanium feet that have given her a new lease on life!

A kind human found Dymka on the side of a road in Novokuznetsk, Siberia. The poor cat had been out in the cold for so long that all four of her feet were destroyed and needed to be cut off. Instead of euthanizing(使安乐死) the animal, a team of veterinarians and researchers from Tomsk Polytechnic University decided to try out some new technology to get Dymka moving again.

First, they took CT scans of Dymka’s legs to create detailed X-rays. Using those scans, they 3D-printed titanium rods (杆)to insert into the cat’s remaining legs. The rods attach to small rubberized feet. Scientists coated the roads with calcium phosphate(磷酸钙), turning them into a “biomaterial” to reduce the risk of infection. This way, the cat’s body can accept the rods as part of herself, rather than feeling a foreign material that could be rejected. It has been two years since Dymka got her new feet, and she is growing well! She can now walk, run, jump, and even manage stairs.

阅读题及答案展示：

1 . What can we learn from the first paragraph?

A Titanium is often used to produce feet.

B 3D printing can help animals walk freely.

C Animals can’t live without one or two limbs.

D Dymka survived because of new technology.

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