(D)        Wu Yulu, a Chinese farmer,   12    little education(教育), has built twenty-six robots by himself over past thirty years. When he was asked why he wanted to build the robots, he answered, “When I was eleven, one day I was bored and sat at the window watching people walking by. An idea suddenly came to me: Why not build a machine   13   walks like a human being(人類)?”         It took Wu Yulu several years   14   his first robot. The robot could move in small steps(腳步), but couldn’t raise its legs. Later his designs became better and better. Now his robots are able to climb walls, serve water, play the guitar, and even write.         Mr. Wu sees all the robots as his sons, and calls them from Wu No. 1 to Wu No. 26. Wu No. 25 is his favorite “son.” Why?   15    Wu No. 25 pulls the cart for his “father” around the village every day. It can work for six hours on only one battery.
【題組】12.
(A)for
(B)in
(C)with
(D)by