Where is the man going to make a presentation?

admin2014-09-28  11

问题 Where is the man going to make a presentation?
  
W:Hi! Paul. All set for your speech club presentation this evening?
M:Yes, I’m going to discuss robots.
W:Robots? You mean, those machines that walk and talk like in the movies?
M:No, industrial robots, like those used in the automotive and electronics industries.
W:I saw an article about that kind of robot the other day. There were pictures of robots welding cars, but they certainly didn’t look the way I thought robots should look.
M:The robots we usually imagine are made up in science fiction. In industry, robots are designed to do a specific set of operations such as welding car frames. They are rarely built to resemble humans.
W:Actually, all they need is a kind of brain to give signals and a mechanism such as an arm to carry out instructions, right?
M:Right! Tiny computers become the brains of these robots. The computer sends signals in the form of electrical impulses that move an arm and a claw. The claw is the hand that does a particular kind of work. Some new industrial robots can reach to a number of tasks and it’s easy to reprogram them to perform totally different operations. That’s one reason why they’re becoming so popular.
W:They increase productivity, don’t they? I mean that even though they’re still quite expensive, they often cost less time doing the same job. I imagine robot will be used more and more.
M: Exactly. So now that you know all about the next industrial revolution, you don’t have to come to speech club tonight.

选项 A、They are smarter than human worker.
B、They are more productive than human workers.
C、They are very durable.
D、They are easy to design.

答案B

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