阅读短文,从所列选项中,选出最佳选项填入对应空白处,使短文通顺、连贯。(选项中有一项多余)
When a young elephant is born, it stands quickly on its feet. It drinks milk from its mother for a few years. The mother elephant teaches it how to use its nose. She teaches it many things. 51. .
Elephants travel a lot. Sometimes they have to cross rivers. A young elephant can be washed down rivers. Or it can fall into a hole. 52. , it becomes an orphan(孤儿). Sometimes a young elephant will become an orphan if its mother is killed. In the wild, a young elephant needs its mother because it can't live without her. If a young elephant lives alone(独自地), 53. .
Some people help to take care of these orphan elephants in parks. 54. . They take care of these elephants in a park until(直到……为止) the orphan elephants can take care of themselves. Then, the keepers take the elephants back to the wild. The keepers need to teach a young elephant how to feed itself. To make the young elephant more comfortable, they rest its nose against(靠着) a huge coat and let it feel a little like its mother. In the wild, young elephants will go under their mothers when it is too hot. 55. . Orphan elephants are so clever that they won't forget where they live and who takes care of them.

51. B 【解析】逻辑推理题。根据“She teaches it many things.”可知,母象教幼象很多东西,可推出母象对幼象很有耐心。因此B项符合语境,故选B。
52. A 【解析】逻辑推理题。根据“it becomes an orphan”可知,它会成为孤儿,故此处应是介绍导致其成为孤儿的原因。因此A项符合语境,故选A。
53. C 【解析】逻辑推理题。根据“If a young elephant lives alone”可知,此处应是指出这一情形导致的后果。因此C项符合语境,故选C。
54. E 【解析】逻辑推理题。根据“They take care of these elephants in a park until the orphan elephants can take care of themselves.”可知,此处应与照顾大象的人有关。因此E项符合语境,故选E。
55. F 【解析】逻辑推理题。根据“In the wild, young elephants will go under their mothers when it is too hot.”可知,在野外,幼象在热的时候会躲在它们妈妈身体的下面,此处表达饲养员为幼象做的事。因此F项符合语境,故选F。