单选题
Without telephone it would be impossible on carry on the functions of ______ every business operation in the whole country.
【正确答案】
A
【答案解析】[试题分析] 本题为副词词义辨析题。
[词义辨析] practically意为“几乎”；preferably意为“较适合，更可取地”；precisely意为“准确，精确地”；presumably意为“可能地”。根据句意，选项[A]为正确答案。