题目

  The cold and icy land that is the Eskimo's home is a dangerous one. The Eskimo once believed that to be safe from danger he had to obey taboos(禁忌). Taboos were rules that told him what he must do and must not do.   The Eskimo had taboos connected with almost everything he did. He had to keep them in mind at all times. He believed that to break one would bring disaster. For the Eskimo, it was taboo to store reindeer（驯鹿） and seal (海豹) meat together. He could not even eat them on the same day. He believed the Goddess Sedna had separated the land animals from the sea a北美洲和南美洲的分界线是（ ）A．白令海峡 B．巴拿马运河 C．苏伊士运河 D．黑海