2026年同步练习册智慧作业八年级英语下册人教版第19页答案
B
With the development of technology, artificial intelligence(AI) is playing a more important role in our daily lives—including helping people with their emotions. Now, AI cannot only detect people's mood changes but also offer simple directions to ease negative feelings.
First, AI detects emotions through different ways. Some AI tools examine facial expressions via cameras; for example, they can tell if you are sad by noticing your downturned lips. Others listen to your voice—changes in speed or tone can show whether you are angry or anxious."My phone's AI once asked me if I was upset after I talked to it in a low voice," said 14-year-old Lin Yu.
Second, AI provides basic emotional directions. When it finds you are in a bad mood, it may suggest simple activities like listening to soft music or taking a short walk. Some AI chatbots can even talk with you patiently, letting you pour out your worries. For teens who feel shy to talk to others, these AI tools can be a good first choice.
However, AI is not perfect. It cannot fully understand complex human emotions as humans do. So, when facing serious emotional troubles, talking to parents, teachers, or professionals is still the best way.
(
D
)20. What is the main idea of the passage?
A. How AI helps people with study and work.
B. The history of AI technology.
C. Why teens should use AI to deal with emotions.
D. AI's development in detecting and guiding human emotions.
(
B
)21. How can AI detect people's emotions according to the passage?
A. By reading people's diaries.
B. By examining facial expressions and voice changes.
C. By asking people to fill in questionnaires.
D. By following people's daily activities.
(
A
)22. What did Lin Yu's experience show?
A. AI can notice people's emotional changes through voice.
B. AI is better at guiding emotions than humans.
C. Phones are the only tools with AI emotion detection.
D. Teens prefer talking to AI over their friends.
(
C
)23. What can we learn from the passage?
A. AI can understand all human emotions perfectly.
B. AI is the best choice for dealing with serious emotional troubles.
C. AI can offer simple help for people's negative feelings.
D. AI detects emotions mainly through people's body gestures.

答案

20.D 21.B 22.A 23.C

解析

【分析】
本题为英语阅读理解题,包含4道选择题,涉及主旨大意和细节理解题型。解题思路:1. 主旨题需通读全文把握核心内容,明确文章围绕的核心话题;2. 细节题需根据题干关键词定位原文对应段落,对比选项与原文信息,排除错误选项得出答案。
【解析】
20题:本题为主旨大意题。通读全文,第一段点明AI在情绪方面的作用(检测情绪、缓解负面情绪),第二段介绍AI检测情绪的方式,第三段介绍AI提供情绪引导的内容,第四段说明AI的不足,核心围绕AI在检测和引导人类情绪方面的发展,对应选项D。
21题:本题为细节理解题。根据题干“AI detect people's emotions”定位到第二段,原文提到“Some AI tools examine facial expressions...Others listen to your voice”,即通过面部表情和声音变化检测情绪,对应选项B。
22题:本题为细节理解题。根据题干“Lin Yu's experience”定位到第二段,原文Lin Yu的例子是“talked to it in a low voice”后AI问是否沮丧,说明AI通过声音察觉情绪变化,对应选项A。
23题:本题为细节理解题。逐一分析选项:A选项与第四段“ It cannot fully understand complex human emotions”不符;B选项与第四段“when facing serious emotional troubles, talking to parents, teachers, or professionals is still the best way”不符;C选项与第三段“it may suggest simple activities like listening to soft music or taking a short walk”相符;D选项与第二段提到的面部表情和声音变化不符,对应选项C。
【答案】
20.D 21.B 22.A 23.C
【知识点】
英语阅读理解,主旨大意题,细节理解题
【点评】
本题围绕AI在情绪领域的应用展开,考查学生对英语文章的主旨把握和细节定位能力,题目难度适中,只要学生认真阅读原文,准确定位关键信息,就能顺利解答。
【难度系数】
0.7