题目

As I held my father’s hands one night, I couldn’t help but notice their calluses (老茧) and roughness. His hands tell the story of his life as a 41 , including all his struggles. One summer, I remember, a drought hit Ontario, turning it into a 42 desert. On one of those hot mornings I was picking sweet corn with my dad to fill the last 43 from the grocery store. Fifty dozen was all we needed, which 44 took twenty minutes. That morning, however, the process didn’t 45 quickly. After forty minutes of aimlessly walking in the field, we 46 needed twenty dozen. I was completely fru（2013•安顺）在平行四边形ABCD中，E在DC上，若DE：EC=1：2，则BF：BE=    ．