单选题 I decided to _________ between Ralph and his brother, who were arguing endlessly.
【正确答案】 B
【答案解析】本题考查动词的含义。A干涉；B干涉，介入；C打断；D互动。句子的意思是：拉尔夫和他兄弟吵得没完没了，我决定介入来劝阻他们。