A、Generate different speeches. B、Identify objects in pictures. C、Improve road conditions. D、Reproduce human brains. B录音提到，认知计算机系

Big data is no longer the hot buzzword it was a few years ago that people strained their brains to understand. It’s now entered the mainstream and can be viewed as an extension of traditional data analysis.
    [23] "Big data and traditional analytics are merging," said Tom Davenport, an independent senior advisor to Deloitte. "It’s getting harder and harder to distinguish the two."
    The term "big data" generally refers to the idea of analyzing enormous volumes of information to make better business decisions and improve the performance of a company’s internal computer systems. Additionally, all that information doesn’t have to be stored in one place. It can be scattered across multiple databases and systems.
    It was just a few years ago that executives struggled to understand the term and had trouble finding employees who specialized in the types of technology used to analyze tons of information.
    Now, however, universities offer specialized master’s degrees for advanced data analytics and companies are creating their own in-house programs to train talent in data science. [24] Networking giant Cisco is an example of a company that created an internal data science training program that over 200 employees have gone through.
    Because of media reports, consulting services, and analysts talking up "big data," people now generally understand what big data means and how they can apply it to their own business.
    Google searches for the term "big data" in 2010 were high, but they have since declined. Davenport explained that’s because people now grasp the term and no longer need to look up what it means. "Frankly, I think there’s less of a desire to read about this stuff, and more of a desire to do it," said Davenport.
    Now, the new hot topic is cognitive computing, which generally refers to computer systems built to simulate human thinking and reasoning using artificial intelligence techniques like machine-learning programs. [25] Cognitive computing systems can recognize speech, identify objects in pictures, and even learn to adapt to dangerous road conditions if embedded within a self-driving car, for example.
    If companies are able to use these advanced data analyzing techniques to solve traditional business problems, such as using IBM Watson to improve water use on farms, cognitive computing might eventually be integrated with how people view traditional data analytics.
    23. What is the relation between big data and traditional analytics according to Tom Davenport?
    24. What does the speaker say about the networking giant Cisco?
    25. What can cognitive computing systems do?