far dream 和big dream 的区别

应该选B，big
but后面转折，他人虽小,但是他有远大的梦想。 far应该有一些“遥不可及”的意思，此处应该并没有讽刺的意思

原题：

One day, a small boy was walking (1)______a street in London. His name was Tom. It was a cold winter day in 1900. (2)______ he could not have breakfast or lunch. He didn't have any money. His father died(死了) when he was very young. His mother was often ill, so she couldn't (3)______ Tom and his brother, Mike. Both of them had to work to help their mother. He was small but his dream(梦想) was very (4)______. His wish was to be a famous actor. He worked very hard to sing and dance (5)______. One day, a man came to him and asked, "(6)______ in my film?" "Certainly," he answered. And he did his (7)______ in it. Many people said, "We have never seen such an (8)______ film." Thirty years (9)______, this boy was among (10)______ famous people in the world. He made many interesting films, and lots of people admired him.
l. A. along B. for C. with D. to