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Will a robot snatch away your job? Or will you learn to love intelligent machines as co-workers? In today's quickly evolving workplace a little of either may be true.
Robots were once seen as workers that would free humans from the "three D" jobs：dull,dirty,and dangerous. Unskilled laborers would have their jobs handed to machines that never needed to take a day off, a vacation, or even a coffee break.
That's still a concern. But humans have also proved resilient, possessing a wide array of fine motor skills that have proved difficult to reproduce in machines. While robots might operate using one sensor, perhaps a kind of vision, humans can tap five senses to assess a situation, as well as a complex set of memories and experiences. When robots can catch up is anyone's guess.
Still, more and more robots are scurrying around places like gigantic Amazon distribution centers, where they deliver packages to channels matched to the right delivery ZIP code. Their paths as they roll about the warehouse floor are based on complex algorithms that maximize efficiency. But for now, humans are still needed to pack the actual boxes, which might contain several items of different sizes, shapes, weights, and fragility. That's a packing choice that still stumps a robot, but is easily handled by a human.
As artificial intelligence advances, robots will move into higher-skilled jobs that seem especially human. This spring, for example, minor league baseball is experimenting with a "robo-umpire" called TrackMan that calls balls and strikes behind home plate. No more fans yelling at a human ump "Get a pair of glasses!" Journalists have fancied themselves pretty safe from robo-job stealing. But RADAR, a robot news writer in Britain, researches and writes stories based on templates created by humans, producing about 8,000 local news stories a month. Humans are still needed to double-check the work, just as editors do with human journalists today.
Observers worry that the historically low 3.6% jobless rate in the United States is temporarily masking this robot revolution shocking the workplace. In April, the Organization for Economic Cooperation and Development estimated 14% of the jobs in its 36 member nations are at 'high risk" of being eliminated by automation, while another 32% will undergo major changes in how they are done. Millions of workers young and old will need to learn new skills to keep their jobs or qualify for new ones. How to prepare to work alongside robots and other manifestations of artificial intelligence is a challenge that individuals, educators, employers, and governments are going to be facing at an ever-quickening pace.
What does the author mean by saying "That's still a concern" in paragraph 3?
A
B
C
D
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答案：
解析：
根据文章第二段提到，机器人曾经被视为可以取代人类从事无聊、肮脏和危险的工作的工人。因此，作者在说“That’s still a concern”（这仍然是一个令人担忧的问题）时，指的是机器人可能会取代人类在非技术性工作中的工作。所以答案是B。
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