题目内容：

Robots make me nervous—especially the ones which seem to think for themselves. I was embarrassed to admit this till I heard that Bill Gates, the founder of Microsoft, felt the same way.

Gates said in an interview with the social networking and news website Reddit: “I am in the camp that is concerned about super intelligence. First the machines will do a lot of jobs for us and not be super intelligent．That should be positive if we manage well. A few decades after that, though, the intelligence is strong enough to be a concern.”

Well, maybe I don’t have to worry about my computer and kitchen equipment yet. After I use them I can always pull the plug. But in the future, machines might find a way to prevent us from switching them off. There’s a terrible thought!

Maybe the problem with computers too clever for us is not that they are evil like some we’ve seen in sci-fi movies. What could put us in danger is that they might be too efficient. That’s what philosopher Nick Bostrom from Oxford University believes. He says that machines are indifferent to humans and in pursuit of their own goals，the destruction of people might be just additional damage. Bostrom gives us an example: A machine which might have its only goal to produce as many paperclips as possible might look at human bodies as extra material for paperclips and go after you. Because it is, well, a machine, it would not take pity on you.

It’s a good thing that American writer Isaac Asimov thought about how far robots can go and left us his three rules of robotics. They state that a robot may not hurt a human being or allow the human being to come to harm.

I’m glad my machines at home are “dumb”. All my cleaner wants to take over is the carpet in my living room. Let’s hope they don’t create an appliance which wants to take over the world!

1.The author quoted Bill Gates’ words in Paragraph 2 in order to make the text________.

A. better-known    B. more persuasive

C. better-organized    D. more interesting

2.An intelligent paperclip machine would harm us because _______.

A. it is much cleverer than us    B. it would take over the world

C. it has the strong feeling of destroying us    D. it would see us just as material

3.How does the author feel about Isaac Asimov’s rules of robotics?

A. Optimistic    B. Worried

C. Disappointed    D. Regretful

4.What does the text mainly focus on?

A. The benefits of future robots.    B. The new applications of robots.

C. The concern for super intelligence.    D. The popularity of robots in the future.