单选题 As he had already been accustomed to living in the countryside, Jackson refused to move to the city.

【正确答案】 B
【答案解析】[解析] used to:过去经常、以前常常;get used to:习惯于,和be accustomed to意思相同;be fond to是错误的短语,正确的应该是be fond of:喜欢;prefer:更喜欢。