有心者千里送鹅毛礼轻情意重 的下联如何对

Learn Swimming
Yesterday is Sunday.The day's weather is so hot.This afternoon,I went to the swimming pool with my father and my brother.
I put up the swimming suit.When I saw the people who is swimming,I wanted to swim very much .So I made up my mind to learn swimming today!
At first,I could not swim at all.My father was very patient.He He encouraged me and taught me how to swim.Though I was hard to swim ,I didn't give up learning swimming !My father taught me how to breath in the water first.Then ,He threw me into the deepest part of the swimming pool .That time I was so afraid !I tried and tried to swim .After a moment ,my father take me back .Three hours later,with the help of my father,I dared to swim myself.I could swim by myself.Although I couldn't swim very well,I was very happy.
Yesterday I not only learned how to swim ,but also learned to be brave !

A正确 太阳辐射可以影响地球的气候
B太阳活动周期应为平均11年
C太阳辐射只会影响无线通讯
D极光,顾名思义,只会发生在极区