A
(2020·成都高二检测)
Is that person really glad to see me? Or is he just being polite? Some people struggle to tell an artificial smile from a truly happy one. And computers have found this task even more difficult. Recently, researchers have trained a program to detect when a smile is genuine(真诚的).
Visual computing researchers at the University of Bradford in the U. K. started with a software for analyzing a changing facial expression. This program can examine a video clip of a human head and identify(确认) specific details around the eyes, cheeks and mouth. Then the program tracks the details relative to each other as the face smiles.
Next, the scientists had their program evaluate(评估)two sets of video clips. In one subjects performed posed smiles. In the other, they watched a film that inspired genuine displays of emotion. The program calculated the differences among the subjects’ faces during the two clips. And it turns out that one’s mouth, cheeks and eyes move differently when pretending to smile.
In particular, the muscles around the eyes shift 10 percent more for a real smile than they do for a fake one. These results are in the journal Advanced Engineering Informatics. “A genuine smile is indeed in the eyes. The computer aids analysis of the exact weight distribution of human smiles across the face. ” Hassan Ugail and Ahmad Al-dahoud say.
The researchers suggest their work could improve a computer’s ability to analyze facial expressions and thus to interact more smoothly with humans. But their real accomplishment is in proving Tyra Banks right: “You have to smile with your eyes. ”
【文章大意】一直以来, 很难判断一个人的微笑是真是假。计算机研究人员开发了一款分析面部表情变化的软件。
1. The purpose of the program is to ______.
A. tell different smiles
B. detect human heads
C. examine human faces
D. record facial expressions
【解析】选A。细节理解题。根据第一段的最后一句: 研究者研发了一个程序来检测微笑的真伪, 可知这个程序是为了判断不同的微笑。
2. What did the researchers do in the program?
A. They performed posed smiles.
B. They analyzed different video clips.
C. They improved a computer’s ability.
D. They evaluated a very special software.
【解析】选B。推理判断题。根据第二段的analyzing a changing facial expression, examine a video clip和tracks the details, 以及第三段的首句可知, 这个程序是通过检查不同的视频来分析面部表情变化的。
3. What result have the researchers found from the program?
A. Smiling with eyes is the most important.
B. Eyes reflect whether a smile is real or not.
C. Mouth, cheeks and eyes always move the same.
D. Muscles move more frequently when people do a fake smile.
【解析】选B。推理判断题。根据第三段的最后一句可知, 当一个人假装微笑的时候, 他的嘴、脸颊和眼睛的动作是不同的。根据第四段的第一句可知, 真笑时眼睛活动比假笑时频率高10%。因此可推出眼睛能反映一个人的微笑是真是假。
4. In which section of a newspaper may this text appear?
A. Entertainment. B. Health.
C. Inventions. D. Science.
【解析】选D。推理判断题。这是一篇有关科技的文章, 不可能出自A项(娱乐)、B项(健康)、C项(发明), 因此只有D项(科普)才符合文章的出处。
