题目内容：

    What is the future of AI（人工智能）? Will it be a good thing? We asked four students what they think.

Tina：I believe AI will be more useful in our future lives. It's now used in many fields, like phones and medicine. No one really knows what will happen if machines become smarter than humans. However, I'm sure AI will help us solve many problems.

Bill：I am worried that people create something that can be better than themselves. In the near future, AI will develop at a high speed. Humans may be replaced because AI robots will do lots of human jobs.

Mary：I really think that AI will change the way we work, the way we live. And the way we think. Imagine if we could put a CPU inside our brain! Soon we'll be able to improve our math and memory. How exciting!

John：Think of what's happening right now. Some robots are used to kill animals under human orders. The media often gives the impression that human-level AI of the sort we see in sci-fi movies is just around the corner, uncomfortably close. I think the killing-decision thing should not be given to the machine. Otherwise, Al will be very dangerous for humans. We need to be careful about what we ask machines to do.

1.Who believes AI will help us solve many problems?

A.Tina. B.Bill. C.Mary. D.John.

2.Bill thinks humans will be replaced because________.

A.we can't improve our memory B.AI robots will do human jobs

C.we can put a CPU in our brain D.AI can help in the medical field

3.Which of the following best describes John's attitude（态度）to AI in the future?

A.Worried. B.Hopeful. C.Curious. D.Uninterested.