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教学全国©0所名校单元测试示范卷札记examples,identify that same or similar gesture with some emotion.This is where the real magic happens.Understanding gestures is a very impressive achieve-ment.But acting on them takes an additional layer of information to be viable:situational context.For example,people are waving,or showing "Stop!"But how do I,as the computer,act on thatinformation?It depends.If I'm a self-driving car approaching a crosswalk and I see an upheld hand in front of me,I caninfer the human wants me to stop.If I instead see that same human using the "move along"ges-ture,that's a strong indication they would prefer for me to continue on my journey.28.What does the underlined word "this"in paragraph 2 probably refer to?A.Being equipped with a camera.B.Identifying the shapes of body parts.C.Mapping out different body types.D.Interpreting a stream of data as gestures.29.Why does the computer pay closer attention to faces and hands?A.To get a full understanding of human gestures.B.To spot differences between facial expressions.C.To help with the communication between people.D.To find and connect more dots on faces and hands.30.What is the function of situational context according to the text?A.It assists a self-driving car to stop.B.It provides humans with additional gestures.C.It separates emotions from body languages.D.It helps computers conduct and act appropriately.31.What may be the best title for the text?A.How computers read body languageB.How self-driving cars were bornC.Why emotions are of importanceD.What the unknown future holds【答案与解析】肢体语言作为一种“无声语言”，是“有声语言”的重要补充。随着人工智能的发展和广泛应用，电脑也需要读懂这种“无声语言”。28.B根据第1段最后一句可知，我们必须让电脑知道在不同的光照条件下，以及不同的体型中膝盖是什么样子，肩膀是什么样子，以及我们身体的所有不同部位。由此可推断，此处hs指识别身体不同部位的外形。29.A根据第3段最后一句可知，电脑近距离观察我们的脸和手，是为了全面了解我们的肢体语言。30.D根据第5段可知，电脑要对手势做出恰当的反应需要额外的信息层一情景背景。再结合下文描述的场景可知，情景背景可以帮助电脑做出恰当的举动。31.A通读全文可知，本文主要介绍电脑如何读懂肢体语言。DLightning strikes in the Arctic may increase by approximately 100 percent by the end of the21st century,according to a new study published in Nature Climate Change.If that happens,places like Alaska could suffer significantly higher rates of wildfires and permafrost (loss,both of which could accelerate warming in the Arctic.What's especially concerning about the rise in Arctic lightning is that it could start a "light-ning-fire-vegetation feedback loop".The researchers explained how more lightning could causemore wildfires,which would burn away many of the shrubs,mosses,and other low-lying plantscovering the Arctic region.Without those plants covering the ground,soil temperatures would56【23新教材·DY·英语-WYB-选择性必修第一册-QG】