题目内容

【题目】C

Researchers are now using three-dimensional, or 3D printing to create models of the human heart to help heart specialists. The heart doctors can use the models to better help patients before an operation.

Surgeons regularly use digital images to explore the heart in close detail. But no two human hearts are alike. This led Matthew Bramlet to create exact heart models from those images. Dr. Bramlet is a pediatric or children's heart expert at the University of Illinois College of Medicine. He says the 3-D models show information he cannot get any other way.

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, in his words, "to understand the anatomy(解剖) for the first time."

Pictures from medical tests like CAT scan or MRI are sent to a 3-D printer to create a heart in a plaster or clay form. The printer then constructs the heart, thin layer by thin layer. Dr. Bramlet says the model matches the real heart in every detail.

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 defects 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.

Matthew 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.

【1】Researchers use three-dimensional, or 3D printing to__________.

A. create models of the human heart

B. help heart specialists

C. make the painting more concrete

D. research human heart

【2】The reason why Matthew Bramlet created exact heart models is that________.

A. no two human hearts are alike

B. surgeons regularly use digital images to explore the heart

C. he created exact heart models from digital images

D. 3D painting is popular

【3】What does the underlined word mean__________?

A. failure to win or to realize a goal

B. a change or changed state

C. the protection of something

D. a fault in someone or something

【4】How does a 3D model form__________?

A. a 3-D printer uses images from a digital display

B. doctors can use the model to understand the anatomy

C. pictures are sent to a 3-D printer, the printer then constructs the heart, thin layer by thin layer

D. the model matches the real heart in every detail

【5】What's the main idea of the passage_________?

A. the use of 3D painting in medical care

B. what is 3D painting

C. how 3D painting works

D. the research of 3D painting technology

【答案】

【1】B

【2】A

【3】D

【4】C

【5】A

【解析】文章主要介绍的是使用3D打印技术打印心脏模型，来指导外科医生更准确地挽救病人的生命。使用3D打印技术制作的心脏模型更为逼真，能够让医生更全面地分析患者的病情。从而对病情做出更加准确的判断。

【1】B 细节理解题。根据第一段“to create models of the human heart to help heart specialists. The heart doctors can use the models to better help patients”可知，使用3D技术来打印心脏模型是为了帮助医生更好地帮助病人。

【2】A 细节理解题。根据第二段“But no two human hearts are alike. This led Matthew Bramlet to create exact heart models from those images.”可知，没有两个人的心脏是完全一样的，这促使Matthew Bramlet产生了创造心脏模型的念头。

【3】D 猜测词意题。根据”one tiny hole in a baby's heart...the 3-D printed model showed several defects or problems that the baby was born with.”医生通过3D打印技术发现婴儿的心脏有几处先天性缺陷，划线词与problems并列。

【4】C 细节理解题。根据第四段“Pictures...are sent to a 3-D printer to create a heart in a plaster or clay form. The printer then constructs the heart, thin layer by thin layer.”可知，来自CAT和MRI的照片发送到3D打印机中，打印机使用这些照片来制作心脏模型。B、C与题意无关。

【5】A 主旨大意题。根据第一段“Researchers are now using three-dimensional, or 3D printing to create models of the human heart to help heart specialists.”和第二段“the 3-D models show information he cannot get any other way”与第三段“doctors can use the model to understand the anatomy(解剖) for the first time”及第四段“the model matches the real heart in every detail”可知文章主要讲的是3D打印技术在医学上的使用。

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