Have you ever had a chat with Siri？Do you ask Google to play your favorite song？Have you ever had Alexa order a pizza for dinner？ （1）FF
Voice assistants are programs on digital devices that listen and respond to verbal（口頭的）commands.Users can say， "What's the weather like？" and the voice assistant will answer with the weather report for that day and location.They could say，"Tell me a story，" and the assistant will jump into a tale.But how do voice assistants understand us？A complex system of codes？An actual person listening on the other end？（2）CC
It all starts with a signal word.Have you ever called a friend's name to get their attention？Users say the names of their voice assistants for the same reason.They might say. "Hey Siri!" or simply，"Alexa!"（3）BB It signals to the voice assistant that it should begin paying attention.
After the voice assistant hears its signal word，it starts recording.The device waits for a pause to know you've finished your request.It then sends your recorded request over the Internet to its database.Once in the database，your request is compared to other requests. （4）GG The database then sends these commands back to the voice assistant.Once it receives the commands，the voice assistant knows what to do next.
Voice assistants are improving all the time.Have you ever asked a voice assistant for something and received results you didn't expect？ （5）EE That teaches the device that the command it received from its database was wrong.It communicates that with the database and tries to do better next time.
A.The battle for voice assistant market share is fierce.
B.Whatever the signal word is，it wakes up the device.
C.The answer is less complicated than you might think.
D.Voice assistants are inside smart speakers in our homes.
E.Each time this happens，the voice assistant learns from its mistake.
F.Today's voice assistants can help you out with just about anything.
G.It's split into separate commands your voice assistant can understand.
【考點】人與自我．
【答案】F；C；B；G；E
【解答】
【點評】
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發(fā)布：2024/5/27 14:0:0組卷：1引用：4難度：0.6
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