A
(2020·湖南长郡中学三模)Facial recognition technology is already widely used by governments and some advertising companies.The technology uses machine learning tools to search for faces in an attempt to identify people.
In a recent study，scientists announced they had developed machine learning tools to track the faces of individual wild chimpanzees(黑猩猩)．Dan Schofield said that the system was developed to improve the quality of information collected about chimpanzees in the wild over a long period of time.
“For species like chimpanzees，which have complex social lives and live for many years，getting snapshots of their behavior from shortterm field research can only tell us so much，” Schofield said.
The researchers wanted to get a more complete understanding of the lives of the chimpanzees by studying them over several generations.But doing this would have required searching through hundreds of hours of video recordings of chimpanzees in the wild.
The researchers recorded the activities of a group of chimpanzees that lived in the West African nation of Guinea.A facial recognition computer model was trained using more than 10 million images of the animals.The model was then used to search，recognize and track individual chimpanzees.The system was able to identify individual chimpanzees correctly about 92 percent of the time.It successfully identified the animals' sex 96 percent of the time.
The study included an experiment with humans to see how they could perform against the machine learning system in making identifications.The human persons were able to correctly identify individual chimpanzees about 42 percent of the time.The machine learning tool was much faster at completing the experiment.Human experts took about 55 minutes，while the computer took only seconds.
The researchers say they are permitting other scientists to use the system for similar projects. hey hope the method will be used with other species to record animal behavior and monitor different animal populations in the environment.
[语篇解读] 本文是一篇说明文。文章主要介绍了人脸识别技术不但用来识别人类，而且还被应用于识别动物，从而帮助科学家们更好地研究动物的情况。
1．What can we infer from Schofield's words?
A．Researching chimpanzees needs more information.
B．Chimpanzees can live as long as humans.
C．Chimpanzees like to get snapshots too.
D．Shortterm field research provides more information.
解析：细节理解题。根据第三段中的“‘For species like chimpanzees，which have complex social lives and live for many years，getting snapshots of their behavior from shortterm field research can only tell us so much，’Schofield said.”可知，像黑猩猩这样的生物，它们具有复杂的生活，并且寿命长，因此研究它们需要更多的信息。
答案：A
2．What does the underlined word “this” refer to?
A．Recording the chimpanzees in the wild.
B．Studying chimpanzees over several years.
C．Understanding the lives of the chimpanzees completely.
D．Getting snapshots of chimpanzees' behavior.
解析：代词指代题。根据画线词前面的“The researchers wanted to get a more complete understanding of the lives of the chimpanzees by studying them over several generations.”可知，this指的是前面提到的对黑猩猩的生活彻底了解。
答案：C
3．What did the experiment with humans prove in the study?
A．Humans make more accurate identifications.
B．The machine learning system is more effective.
C．Humans can't identify the animals' sex correctly.
D．Machine learning tools take a little more time in identification.
解析：推理判断题。根据倒数第二段“The study included an experiment with humans...Human experts took about 55 minutes，while the computer took only seconds.”可知，通过在人类身上做实验可知，机器学习系统无论是在时间上，还是在正确率上，识别都更加有效。
答案：B
4．What is the best title for the text?
A．Facial Recognition for Animals Is Becoming Popular
B．Facial Recognition Is Helping Animals Live in the Wild
C．Facial Recognition Plays a Role in Raising Animals
D．Facial Recognition Is Used to Identify and Follow Animals
解析：标题归纳题。本文主要介绍了人脸识别技术在新领域中的应用。科学家们把它利用到研究动物上，从而能够更好地获得信息等情况，因此D项符合主题。
答案：D
