In recent years, 3D printing has become a popular technology that is changing the way we create and design objects. This amazing technology can create three-dimensional objects from a digital model.
3D printing works by using a special printer that builds up layers of material, one at a time, to form a solid object. The printer follows the instructions from a computer model to determine the shape and size of the object.
One of the most exciting applications of 3D printing is in the medical field. Doctors can use 3D printing to create models of organs or bones, which helps them plan surgeries more accurately. Scientists are even using 3D printing to create artificial organs for patients who need transplants.
Another interesting use of 3D printing is in the field of architecture. Architects can create 3D models of buildings before they are built, which allows them to test and improve the design. This saves time and money in the construction process.
3D printing is also revolutionizing the world of education. Students can use 3D printers to create their own models and prototypes, which helps them understand complex concepts in a more hands-on way.
With the continued development of 3D printing technology, we can expect to see even more amazing applications in the future.
Questions：
1、What is 3D printing?
A. A way to draw 3D pictures.
B. A technology to create 3D objects.
C. A special type of computer game.
D. A method to repair broken objects.
2、How does 3D printing work?
A. By using a regular printer.
B. By adding layers of material.
C. By melting the material first.
D. By shaping the material manually.
3、In which field is 3D printing most helpful for surgeries?
A. Architecture.
B. Medicine.
C. Education.
D. Entertainment.
4、What do architects use 3D printing for?
A. To create organ models.
B. To test and improve designs.
C. To teach complex concepts.
D. To repair broken buildings.
5、What can we expect in the future of 3D printing?
A. More applications in various fields.
B. Faster and cheaper printing process.
C. Only limited use in specific areas.
D. Replacement of traditional manufacturing.
答案及解析
1.【答案】B
【解析】文章第一段提到：“In recent years, 3D printing has become a popular technology that is changing the way we create and design objects.”(近年来，3D打印已成为一种流行的技术，正在改变我们创造和设计物体的方式。)因此，3D打印是一种创造3D物体的技术，答案为B。
2.【答案】B
【解析】文章第二段提到：“3D printing works by using a special printer that builds up layers of material, one at a time, to form a solid object.”(3D打印使用特殊的打印机，一次一层地构建材料，形成固体物体。)因此，3D打印是通过添加材料层来工作的，答案为B。
3.【答案】B
【解析】文章第三段提到：“One of the most exciting applications of 3D printing is in the medical field. Doctors can use 3D printing to create models of organs or bones, which helps them plan surgeries more accurately.”(3D打印最激动人心的应用之一是在医学领域。医生可以使用3D打印来创建器官或骨骼的模型，这有助于他们更准确地计划手术。)因此，3D打印在医学领域对手术最有帮助，答案为B。
4.【答案】B
【解析】文章第四段提到：“Architects can create 3D models of buildings before they are built, which allows them to test and improve the design.”(建筑师可以在建筑建成之前创建3D模型，这允许他们测试和改进设计。)因此，建筑师使用3D打印来测试和改进设计，答案为B。
5.【答案】A
【解析】文章最后一段提到：“With the continued development of 3D printing technology, we can expect to see even more amazing applications in the future.”(随着3D打印技术的不断发展，我们可以期待在未来看到更多令人惊讶的应用。)因此，我们可以期待3D打印在未来将有更多的应用领域，答案为A。
