Question

B  [2015*四川遂宁高三第二次诊断] Researchers are now using 3-D printing to create models of the human heart to help heart specialists. The heart doc?tors can use the models to better help patients before an oper?ation.

Dr Bramlet, a children's heart expert at the University of Illinois College of Medicine, says the 3-D models show infor?mation he cannot get any other way.

"And so what we've done with the printed models, we've pulled it out of the screen so that we can actually hold it in our hand and evaluate the anatomy(解剖)."

A 3-D printer uses images from a digital display to create a physical model of a human heart. Matthew Bramlet says doctors can use the model to understand the anatomy.

Pictures from medical tests like CAT scan or MRI are sent to a 3-D printer to create a heart in a plaster(石膏):form. The printer then constructs the heart, thin layer by thin lay?er. Dr Bramlet says the model matches the real heart in eveVy detail. "When we're done with the model and made our deci?sion, we want to be able to go back to the source image and confirm those findings," he says.

Dr Bramlet has built model hearts for different kinds of heart operations. All of the operations were successful. In his first case, digital images showed only one tiny hole in a baby's heart. But, the 3-D printed model showed several de?fects or problems that the baby was born with. Dr Bramlet says those defects could not be seen easily in the images. The heart surgeon was able to change the type of surgery for the patient based on the 3-D model. He added that 3-D heart models saves time during heart operations.

Kathy Magliato is a heart surgeon at Saint John's Health Centre in Los Angeles. She welcomes the new technology. She says it could help her make better decisions before she operates on the hearts of her patients.

"I can then take this very complicated structure before the operation and I can hold it in my hand and plan an opera?tion around what I'm seeing, touching and feeling. That to me is what can potentially change the game in an operation and save lives.，，

Dr Bramlet continues to research the technology. He is working with the National Institutes of Health to build a 3-D library that includes heart models and images that others can use.

5.What's the main idea of the passage?

 A.     The application of 3-D printing in heart operations.

B.     The development of 3-D technology.

C.     The difficulties of heart operations.

D.     Heart operations with the help of 3-D models.

6. What is the biggest advantage of 3-D models in the diag?nose of heart problems?

 A.     Surgeons can see, touch and feel the 3-D models.

B.     They can help surgeons save time.

C.     They can be made exactly like the hearts.

D.     They can help discover the otherwise hidden heart problems.

7.Which of the following statements is TRUE?

 A.     The 3-D model can be taken out of a screen.

B.     CAT scan and MRI are no longer needed.

C.     The 3-D model is an exact copy of the heart.

D.     Digital images are not reliable in heart operations.

8.What can we infer from the passage?

 A.     Digital images will mislead heart surgeons.

B.     More patients will benefit from the 3-D technology.

C.     Heart operations will never fail with 3-D models.

D.     Surgeons cannot operate on hearts without 3-D mod?els.

Answer 1

B [文章大意]本文是一篇科普文，介绍3-D打印在医疗领域的

应用。

5.A 细节理解题。根据文章开头"Researchers are now using 3-D printing to create models of the human heart to help heart special-ists."可知，本文讲述的是三维打印在心脏手术方面的应用。故选A项。

6. D 细节理解题。根据第二段的"…the 3-D models show informa?tion he cannot get any other way."可知，三维打印可以发现别的方式发现不了的问题。故选D项。

7. C 细节理解题。根据第四段"A 3-D printer uses images from a digital display to create a physical model of a human heart.，，可知， 3-D打印可以制造出心脏的模型。故选C项。

8. B 推理判断题。根据最后一段的"Dr Bramiet continues to re?search the technology."可知，他继续研究三维打印技术，以后就有更多的病人可以受益。故选B项。