第6部分：完型填空(第51～65题，每题1分，共15分)
下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。

Robotic Highway Cones

A University of Nebraska professor has developed robotic cones and barrels. These robotic cones and barrels can move out of the way, or into place, from computer commands made miles away. They can even be programmed to move on their own at any particular part of the day, said Shane Farritor, an assistant professor of mechanical engineering at Nebraska.
For example, if workers arrived at 6 am, the cones could move from the side of the highway to block off the lane at that time. And they can return to the original place at the end of the day. “It just seems like a very good application for robots.” Farritor said. “The robotic cones would also help remove people from hazardous jobs on the highway putting barrels and cones into place,” Farritor said in a report on his creation.
Work on the idea began in 2002 using a National Academy of Sciences grant. The fund allowed Farritor to work on the project with graduate students at Nebraska and his assistant Steve Goddard.
The robots are placed at the bottom of the cones and barrels and are small enough not to greatly change the appearance of the construction aides. “It would look exactly the same,” Farritor said. “Normally there’s a kind of rubbery, black base to them. We replace that with a robot.”
Farritor has talked with officials from the Nebraska Department of Roads about how the robots would be most useful to what they might need.
The robots could come in handy following a slow-moving maintenance operation, like painting a stripe on a road or moving asphalt, where now the barrels have to be picked up and moved as the operation proceeds. “That way you don’t have to block off a 10-mile strip for the operation ,” Farritor said.
While prototypes have been made, they are not in use anywhere. Farritor said he has applied for a patent and is considering what to do next. He is thinking about starting a small business. He is also thinking about marketing the robots to roads departments and others across the country who may benefit from them.
51. A. work
B. place
C. order
D. action
52. A. block
B cut
C. set
D. turn
53. A. clean
B. important
C. entire
D. original
54. A. employ
B. observe
C. remove
D. instruct
55. A. idea
B. report
C. demand
D. fund
56. A. helpful
B. beautiful
C. small
D. huge
57. A. Kindly
B. Normally
C. Greatly
D. Strangely
58. A. at
B. on
C. in
D. with
59. A. related
B. typical
C. useful
D. visible
60. A. why
B. where
C. when
D. what
61. A. proceeds
B. functions
C. finishes
D. improves
62. A. If
B. While
C. Since
D. Because
63. A. applied
B. asked
C. called
D. argued
64. A. saving
B .marketing
C. moving
D. devising
65. A. benefit
B. protect
C. learn
D. inspire