题目内容：

    Brooke wanted a dollhouse and some sugar cookies. So the 6-year-old asked Alexa to get them. Alexa wasn't her mom or babysitter. It was a voice-activated(声控的) home assistant powered by artificial intelligence(AI). Alexa comes with the Amazon Echo device(回波装置). And it made Brooke's wishes come true. After being reported on TV, Alexa devices in many listeners' homes woke up and tried to order dollhouses!

Alexa isn't the only AI willing to order up treats for you. Apple Homepod has Siri, Google Home has its Assistant, and the upcoming Galaxy Home device will have Bixby. People who own these devices use them mainly for listening to music, checking the weather, and setting timers. According to a report from The Information, people don't often do voice shopping. They do it mainly to order simple things like paper towels. But many experts predict a boom(繁荣) in voice shopping in the near future.

Convenience is the main benefit of voice shopping. You can shout out an order as soon as you think of it, even if you're cooking or driving. Besides, people who are unable to use a keyboard or mouse can shop without assistance.

But voice shopping has its downsides. Unwanted things aren’t the biggest problem. It's usually very easy to cancel an order or return items. The surprising thing is that these assistants are always listening. They have to be able to respond when you want them. So they listen for ''Alexa'' or ''OK Google'' or another command. When they hear it, they start recording the conversation. Some have worried about what happens to these recordings. Should companies be allowed to use them to learn about people's shopping habits? What if someone hacks(非法侵入) the device? What if someone hacks smart TVs to turn them into spies that listen all the time?

1.What is Alexa?

A.A TV reporter. B.A friend of Brooke.

C.A voice-activated device. D.A cookie maker.

2.What can you learn from paragraph2?

A.Alexa is the best AI device.

B.People buy various things through voice shopping.

C.People use Bixby mainly for listening to music.

D.Voice shopping may have a bright future.

3.What is the author's attitude towards Alexa devices?

A.Optimistic. B.Doubtful.

C.Objective. D.Negative.

4.What's the best title of the text?

A.How did Brooke' wishes come true? B.The voice-activated home assistant-Alexa

C.How can we start voice shopping? D.What convenience do Alexa devices bring?