题目
On a Saturday morning earlier this September, the world got its first look at the Strati. This electric vehicle is unlike any other currently on the road. It rolls on four wheels, but its body and chassis(底盘) weren’t built in a factory. Instead, Strati’s designers used a technology called 3-D printing. It created those parts of the car in one piece, from the ground up. “Compared to a typical vehicle on the road, the Strati definitely looks different,” says Greg Schroeder, a senior research engineer at the Center for Automotive Research in Ann Arbor, Mich. He did not work on the new car. His organization studies trends and changes in the auto industry. It took 44 hours to print the new car at the International Manufacturing Technology Show in Chicago. Over the next few days, the car’s designers installed additional parts. These included the car’s engine, brakes and tires. Then, early on September 13, Jay Rogers climbed into the car, started its engine and drove the vehicle onto the street. Rogers helped found Local Motors. It’s the Arizona-based company behind the Strati. Two weeks later, his team printed a second Strati, and just as fast, at a fair in New York City. Justin Fishkin, a local Motors official, sees the Strati as a window into the future. Today, car buyers are limited in their choice of a vehicle. They can order only what car companies have already designed. But in the future, he says, you may be able to design your own car online and then get it printed to order. Manufacturing experts say 3-D printing has begun to revolutionize how they make things. The technology has been around for decades. But these machines used to be so expensive that only large companies could afford them. In the last few years, though, that has changed. Many of the machines are now inexpensive enough for small companies—or even individuals —to own. Some local libraries make them available to the public. High Schools are beginning to use them in classrooms. Wide access to these printers means people can now design and print a wide variety of new things. The car’s printer is a one-of-a-kind device. The technology behind the 3-D printer used in Chicago is an example of additive manufacturing. This process builds solid objects, slice by slice, from the bottom up. (“Strati” means layers, in Italian.) A mechanical arm moves a nozzle from one side to another, back and forth. As it moves, the nozzle deposits a liquid—often melted plastic or metal (but it could be food, concrete or even cells) —that quickly hardens or bonds to become solid or semi-solid. This creates a single, thin layer. Once a layer is complete, the printer starts depositing the next one. “There’s a lot of interest in 3-D printing in the auto industry,” says Schroeder. Right now, the technology is particularly useful for building models of cars or car parts. To compete with current auto manufacturers, the 3-D printer would have to increase in a hurry, Schroeder says. By contrast, he notes, a Ford F-150 pickup truck rolls off an assembly line at a rate of roughly one per minute. To print as many Stratis would require many more printers. Schroeder says he doesn’t see 3-D printing soon taking over for such high-volume manufacturing. But, he adds, “Who knows what will happen in the long term?” Scientists at Oak Ridge National Laboratory in Tennessee designed the 3-D printer used in Chicago. Lonnie Love, a research scientist at the lab, led the effort. Additive manufacturing often is slow and expensive. It also may produce materials that are unreliable, Love says. So for two years, his team searched for ways to make 3-D printing better. They built new machines and tested them over and over. All of that work paid off: their new machine is fast and uses less expensive material than earlier printers. In addition, it prints a plastic embedded with fibers of carbon to produce a stronger material. This helps ensure the material won’t crack or break under pressure. 【小题1】Which of the following statements about the first Strati is TRUE? A．It was born in a car factory in Chicago. B．All parts of it were not made by using a technology called 3-D technology. C．It is a pity that it has not run on the street so far. D．Many senior research engineers worked on it, including Greg Schroeder. 【小题2】What can we infer from Paragraph 5? A．Large companies are always rich enough to buy expensive things. B．Now High Schools are beginning to use 3-D printers in classrooms. C．Wide access to 3-D printers has made it possible for people to order novel things online. D．High prices of new products can stop them from being used widely in the beginning. 【小题3】What does the word “nozzle” in Paragraph 7 possibly refer to? A．A single, thin layer. B．A part of the 3-D printer. C．A solid or semi-solid object. D．A person who operates the machine. 【小题4】Why did Lonnie Love make efforts to improve 3-D printing with his team? A．Because additive manufacturing might produce unreliable materials. B．Because he just was interested in making new things. C．Because he just wanted to build new machines and test them D．Because additive manufacturing is always slow but inexpensive. 【小题5】Which of the following can be the best title for this passage? A．3-D Printers Are Coming B．3-D Printers Are Becoming Well- Known C．3-D Printers Are Becoming Cheaper D．3-D Printers Are Making Cars
On a Saturday morning earlier this September, the world got its first look at the Strati. This electric vehicle is unlike any other currently on the road. It rolls on four wheels, but its body and chassis(底盘) weren’t built in a factory. Instead, Strati’s designers used a technology called 3-D printing. It created those parts of the car in one piece, from the ground up.
“Compared to a typical vehicle on the road, the Strati definitely looks different,” says Greg Schroeder, a senior research engineer at the Center for Automotive Research in Ann Arbor, Mich. He did not work on the new car. His organization studies trends and changes in the auto industry.
It took 44 hours to print the new car at the International Manufacturing Technology Show in Chicago. Over the next few days, the car’s designers installed additional parts. These included the car’s engine, brakes and tires. Then, early on September 13, Jay Rogers climbed into the car, started its engine and drove the vehicle onto the street. Rogers helped found Local Motors. It’s the Arizona-based company behind the Strati. Two weeks later, his team printed a second Strati, and just as fast, at a fair in New York City.
Justin Fishkin, a local Motors official, sees the Strati as a window into the future. Today, car buyers are limited in their choice of a vehicle. They can order only what car companies have already designed. But in the future, he says, you may be able to design your own car online and then get it printed to order.
Manufacturing experts say 3-D printing has begun to revolutionize how they make things. The technology has been around for decades. But these machines used to be so expensive that only large companies could afford them. In the last few years, though, that has changed. Many of the machines are now inexpensive enough for small companies—or even individuals —to own. Some local libraries make them available to the public. High Schools are beginning to use them in classrooms. Wide access to these printers means people can now design and print a wide variety of new things.
The car’s printer is a one-of-a-kind device.
The technology behind the 3-D printer used in Chicago is an example of additive manufacturing. This process builds solid objects, slice by slice, from the bottom up. (“Strati” means layers, in Italian.) A mechanical arm moves a nozzle from one side to another, back and forth. As it moves, the nozzle deposits a liquid—often melted plastic or metal (but it could be food, concrete or even cells) —that quickly hardens or bonds to become solid or semi-solid. This creates a single, thin layer. Once a layer is complete, the printer starts depositing the next one.
“There’s a lot of interest in 3-D printing in the auto industry,” says Schroeder. Right now, the technology is particularly useful for building models of cars or car parts.
To compete with current auto manufacturers, the 3-D printer would have to increase in a hurry, Schroeder says. By contrast, he notes, a Ford F-150 pickup truck rolls off an assembly line at a rate of roughly one per minute. To print as many Stratis would require many more printers. Schroeder says he doesn’t see 3-D printing soon taking over for such high-volume manufacturing. But, he adds, “Who knows what will happen in the long term?”
Scientists at Oak Ridge National Laboratory in Tennessee designed the 3-D printer used in Chicago. Lonnie Love, a research scientist at the lab, led the effort.
Additive manufacturing often is slow and expensive. It also may produce materials that are unreliable, Love says. So for two years, his team searched for ways to make 3-D printing better. They built new machines and tested them over and over.
All of that work paid off: their new machine is fast and uses less expensive material than earlier printers. In addition, it prints a plastic embedded with fibers of carbon to produce a stronger material. This helps ensure the material won’t crack or break under pressure.
【小题1】Which of the following statements about the first Strati is TRUE?
【小题2】What can we infer from Paragraph 5?
【小题3】What does the word “nozzle” in Paragraph 7 possibly refer to?
【小题4】Why did Lonnie Love make efforts to improve 3-D printing with his team?
【小题5】Which of the following can be the best title for this passage?
“Compared to a typical vehicle on the road, the Strati definitely looks different,” says Greg Schroeder, a senior research engineer at the Center for Automotive Research in Ann Arbor, Mich. He did not work on the new car. His organization studies trends and changes in the auto industry.
It took 44 hours to print the new car at the International Manufacturing Technology Show in Chicago. Over the next few days, the car’s designers installed additional parts. These included the car’s engine, brakes and tires. Then, early on September 13, Jay Rogers climbed into the car, started its engine and drove the vehicle onto the street. Rogers helped found Local Motors. It’s the Arizona-based company behind the Strati. Two weeks later, his team printed a second Strati, and just as fast, at a fair in New York City.
Justin Fishkin, a local Motors official, sees the Strati as a window into the future. Today, car buyers are limited in their choice of a vehicle. They can order only what car companies have already designed. But in the future, he says, you may be able to design your own car online and then get it printed to order.
Manufacturing experts say 3-D printing has begun to revolutionize how they make things. The technology has been around for decades. But these machines used to be so expensive that only large companies could afford them. In the last few years, though, that has changed. Many of the machines are now inexpensive enough for small companies—or even individuals —to own. Some local libraries make them available to the public. High Schools are beginning to use them in classrooms. Wide access to these printers means people can now design and print a wide variety of new things.
The car’s printer is a one-of-a-kind device.
The technology behind the 3-D printer used in Chicago is an example of additive manufacturing. This process builds solid objects, slice by slice, from the bottom up. (“Strati” means layers, in Italian.) A mechanical arm moves a nozzle from one side to another, back and forth. As it moves, the nozzle deposits a liquid—often melted plastic or metal (but it could be food, concrete or even cells) —that quickly hardens or bonds to become solid or semi-solid. This creates a single, thin layer. Once a layer is complete, the printer starts depositing the next one.
“There’s a lot of interest in 3-D printing in the auto industry,” says Schroeder. Right now, the technology is particularly useful for building models of cars or car parts.
To compete with current auto manufacturers, the 3-D printer would have to increase in a hurry, Schroeder says. By contrast, he notes, a Ford F-150 pickup truck rolls off an assembly line at a rate of roughly one per minute. To print as many Stratis would require many more printers. Schroeder says he doesn’t see 3-D printing soon taking over for such high-volume manufacturing. But, he adds, “Who knows what will happen in the long term?”
Scientists at Oak Ridge National Laboratory in Tennessee designed the 3-D printer used in Chicago. Lonnie Love, a research scientist at the lab, led the effort.
Additive manufacturing often is slow and expensive. It also may produce materials that are unreliable, Love says. So for two years, his team searched for ways to make 3-D printing better. They built new machines and tested them over and over.
All of that work paid off: their new machine is fast and uses less expensive material than earlier printers. In addition, it prints a plastic embedded with fibers of carbon to produce a stronger material. This helps ensure the material won’t crack or break under pressure.
【小题1】Which of the following statements about the first Strati is TRUE?
| A．It was born in a car factory in Chicago. |
| B．All parts of it were not made by using a technology called 3-D technology. |
| C．It is a pity that it has not run on the street so far. |
| D．Many senior research engineers worked on it, including Greg Schroeder. |
| A．Large companies are always rich enough to buy expensive things. |
| B．Now High Schools are beginning to use 3-D printers in classrooms. |
| C．Wide access to 3-D printers has made it possible for people to order novel things online. |
| D．High prices of new products can stop them from being used widely in the beginning. |
| A．A single, thin layer. |
| B．A part of the 3-D printer. |
| C．A solid or semi-solid object. |
| D．A person who operates the machine. |
| A．Because additive manufacturing might produce unreliable materials. |
| B．Because he just was interested in making new things. |
| C．Because he just wanted to build new machines and test them |
| D．Because additive manufacturing is always slow but inexpensive. |
| A．3-D Printers Are Coming |
| B．3-D Printers Are Becoming Well- Known |
| C．3-D Printers Are Becoming Cheaper |
| D．3-D Printers Are Making Cars |
题目解答
答案
【答案】
【小题1】B
【小题2】D
【小题3】B
【小题4】A
【小题5】D
【小题1】B
【小题2】D
【小题3】B
【小题4】A
【小题5】D
解析
考查要点：
- 细节理解：需根据文章具体信息判断选项正误。
- 推理判断：通过上下文逻辑推断隐含信息。
- 词义猜测：结合语境推断专业术语含义。
- 主旨大意：提炼文章核心内容，选择最佳标题。
解题核心思路：
- 定位关键句：通过问题关键词（如“Strati”“Paragraph 5”“nozzle”等）快速定位原文段落。
- 排除干扰项：注意选项中绝对化表述（如“all”“not...at all”）或与原文细节不符的内容。
- 逻辑关联：通过因果关系、对比等逻辑关系推断隐含信息（如“高价阻碍技术普及”）。
【小题1】
关键信息：
- 第一段明确指出，Strati的车身和底盘是3D打印的，但其他部件（如发动机、刹车、轮胎）是后续安装的。
- 选项B“并非所有部件都使用3D打印技术”与原文一致，其他选项均与事实矛盾。
答案：B
【小题2】
关键信息：
- 第五段指出，3D打印机最初因价格昂贵仅大公司能购买，后来价格下降后，小公司和个人开始使用。
- 隐含逻辑：高价是技术最初未被广泛使用的原因，对应选项D。
答案：D
【小题3】
关键信息：
- 第七段描述3D打印过程时提到“机械臂移动喷嘴（nozzle）来回移动，喷出液体”。
- 上下文推断：喷嘴是打印机的组成部分，对应选项B。
答案：B
【小题4】
关键信息：
- 第九段指出，Lonnie Love团队改进3D打印技术的原因是“现有技术生产的材料不可靠”。
- 直接对应选项A。
答案：A
【小题5】
关键信息：
- 文章核心内容是3D打印技术在汽车制造中的应用（Strati的案例）。
- 选项D“3D打印机正在制造汽车”最能概括文章主旨。
答案：D