Hundreds of people were gathered at the Walt Disney Concert Hall in Los Angeles. Suddenly, inside the building’s hallway, dragons were flying and breathing fire. The dragons were not real, though. They were made using a special technique called projection mapping which casts virtual(虚拟的) pictures onto the real world. Now, it has gotten very popular in the United States. TV companies are using the technology to help to create excitement around certain events.
To create it, the artists first take hundreds of photos of an object or building. They might use lasers(激光) to measure an object exactly. Then, the computer software shows what the pictures will look like when projected onto the building or object. Next, designers produce an image(图像) that perfectly fits the shape of the physical object. The final product is projected onto the space using bright lasers. These can cost as much as $100，000 each.
Philippe Bergeron started a projection mapping company called Paintscaping. Bergeron said 2017 might be the company’s most profitable year. Los Angeles County is a major center for talented artists. Still, projection mapping is new. It is perhaps not as popular as it could be. One reason is that it is hard to get permission from the local government for this type of show. City officials fear that the images will distract drivers on local highways.
A new company in San Francisco called Lightform is building a computer that will be able to connect with any projector. This will allow the artists to project images while drawing them. Brett Jones who runs the new company said you would be able to talk to projected images or touch the light like you would touch a smart phone screen.
Bergeron sees a bright future for projection mapping. “In the future, we’re not going to be able to trust reality，” he said. “We will be able to create effects that are so real that you’re not going to know the difference.”
【解题导语】 本文是一篇说明文。文章介绍了立体光雕的制作方法以及发展现状。
1．What happened in the Walt Disney Concert Hall?
A．Hundreds of people performed a dragon dance.
B．TV companies were competing for attention.
C．Virtual pictures excited the audience.
D．Pictures of dragons were exhibited.
C 解析：推理判断题。根据第一段内容可推断，该立体光雕秀轰动了全场。
2．What does the author want to show in Paragraph 2?
A．How to make a projection mapping show.
B．How to produce a physical image.
C．How to measure a huge object.
D．How to use lasers.
A 解析：推理判断题。根据第二段中的To create it以及下文中的具体做法可知，该段描述了立体光雕的制作步骤。
3．Why does the new technique gain little popularity in Los Angeles County?
A．It costs too much.
B．It has caused road accidents.
C．There are few artists who can apply it.
D．The local government disapproves of it.
D 解析：细节理解题。根据第三段中的One reason is that it is hard to get permission from the local government for this type of show.可知，当地政府不允许展示这种光雕秀。
4．What can we infer about the company Lightform?
A．It was built and run by Bergeron.
B．It is attempting to make a breakthrough.
C．It has attracted many artists to work for it.
D．It is producing touch screens for smart phones.
B 解析：推理判断题。根据倒数第二段中的A new company in San Francisco called Lightform is building a computer that will be able to connect with any projector.可知，这个公司正在研究技术突破。
