阅读下面的短文，掌握其大意，然后从各题所给的三个选项中选出一个最佳答案。
Gina’s mother found that her daughter never shared anything with her friends. She also found children didn’t 31 to play with her daughter. They said Gina always made them 32 .
Then Gina’s mother told her the film of an ant （蚂蚁） and a dove （鸽子）.
“One day an ant fell into a 33 and tried to save herself. A dove got a leaf and let it fall into the river close to the ant. The ant 34 onto it and went to the bank （岸）. Later， a man came and wanted to catch the dove. The ant stung （蜇） them on the foot. The man stood up and the sound made the dove fly away. It 35 that if you are kind to others. you will be treated well.”
Gina remembered the story from then on （從那时起）. Later， she helped her classmate Rita with math 36 Rita was not very good at it. Rita also studied Gina in some ways.
One day， Gina was asked to 37 the waste paper in the classroom. It was easy for her to finish the work herself. Rita helped Gina 38 the classroom， which made Gina 39 of the story of the ant and the dove. From that day on， Gina realized the 40 of friendship， and she began to enjoy helping others.
（ ）31. A. remember B. promise C. like
（ ）32. A. patient B. easy C. excited
（ ）33. A. hole B. forest C. river
（ ）34. A. jumped B. ran C. climbed
（ ）35. A. stops B. says C. means
（ ）36. A. because B. and C. though
（ ）37. A. hand out B. pick up C. put on
（ ）38. A. check B. leave C. clean
（ ）39. A. use B. look C. think
（ ）40. A. importance B. trouble C. fact
