【題目】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】文章主要介紹的是使用3D打印技術(shù)打印心臟模型，來指導外科醫(yī)生更準確地挽救病人的生命。使用3D打印技術(shù)制作的心臟模型更為逼真，能夠讓醫(yī)生更全面地分析患者的病情。從而對病情做出更加準確的判斷。

【1】B 細節(jié)理解題。根據(jù)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技術(shù)來打印心臟模型是為了幫助醫(yī)生更好地幫助病人。

【2】A 細節(jié)理解題。根據(jù)第二段“But no two human hearts are alike. This led Matthew Bramlet to create exact heart models from those images.”可知，沒有兩個人的心臟是完全一樣的，這促使Matthew Bramlet產(chǎn)生了創(chuàng)造心臟模型的念頭。

【3】D 猜測詞意題。根據(jù)”one tiny hole in a baby's heart...the 3-D printed model showed several defects or problems that the baby was born with.”醫(yī)生通過3D打印技術(shù)發(fā)現(xiàn)嬰兒的心臟有幾處先天性缺陷，劃線詞與problems并列。

【4】C 細節(jié)理解題。根據(jù)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，來自CAT和MRI的照片發(fā)送到3D打印機中，打印機使用這些照片來制作心臟模型。B、C與題意無關(guān)。

【5】A 主旨大意題。根據(jù)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”與第三段“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”可知文章主要講的是3D打印技術(shù)在醫(yī)學上的使用。

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