根据下列内容，回答206-210题。
I began to grow up that winter night when my parents and l were returning from my aunt’s house，and my mother said that we might soon be leaving for America．We were on the bus then，I was crying，and some people on the bus were turning around to look at me．I remember that I could not bear the thought of never hearing again the radio program for school children to which I listened every morning．
I do not remember myself crying for this reason again．In fact，I think cried very little when I was saying goodbye to my friends and relatives．When we were leaving I thought about all the places l was going to see-the strange and magical places I had know only from books and pic-tures．The country l was leaving never to come back was hardly in my head then．
The four years that followed taught me the importance of optimism，but the idea did not come to me at once．For the first two years in New York l was really lost--having to study in three scheels as a result of family moves．I did not quite know what l was or what I should be．Mother remarried，and things became even more complex for me．Some time passed before my stepfather and I got used to each other．1 was often sad．and saw no end t0“the hard times”．
My responsibilities in the family increased a lot since I knew English better than everyone else at home．1 wrote letters，filled out forms，translated at interviews with immigration officers，took my grandparents to the doctor and translated there，and even discussed telephone bills with con- pany representatives．
From my experiences I have learned one important rule：all common troubles eventually go away!Something good is certain to happen in the end when you do not give up，and just wait alittle!I believe that my life will turn out all right，even though it not be that easy．
How did the author get to know America? __________

A.From her relatives
B.Form her mother
C.Form books and pictures
D.From radio programs