练习：
A.And they can return to the original place at the end of the day.
B.He is thinking about starting a small business.
C.Farritor was“Inventor of the Year”in 2003.
D.Work on the idea began in 2002 using a National Academy of Sciences grant.
E.We replace that with a robot.
F.These robotic cones and barrels can move out of the way，or into place，from computer commands made miles away.
标准答案： F,A,D,E,B
