题目

Twelve years ago, I arrived in Central Florida from Puerto Rico. I had heard of a job opportunity and decided to pursue it, but it never became a reality. I quickly learned that being alone without resources in an unfamiliar city was not a comfortable situation to be in. Once my limited funds ran out I became homeless and spent a year and a half living on the streets of Orlando. Apart from feeling not being noticed and missing my family, I had to face another challenge—hunger. For the first time in my life, I, as a foreign man, who had lived my life in the relative comfort of the middl英国物理学家____________通过大量的实验探究，最先精确的确定了电流产生的热量跟电流、电阻和通电时间的关系，即Q=I2Rt．为了纪念他作出的杰出贡献，人们将他的名字命名为__________的单位。