单选题 Modern forms of transportation and communication have done much to ______ the isolation of life in Alaska.

【正确答案】 A

【答案解析】[解析] break through“突破，瓦解”；break down“打破，减轻，把……分解”；break into“闯入”；break out“爆发”。根据句子意思可知答案为A。