A healthy life is frequently thought to be _________ with the open countryside and home-grown food．

A.tied

B.related

C.involved

D.associated

答案及解析： D

解析：

句意：一个健康的生活经常让人想起宽阔的乡村和自产的食品。此句要用be associated with在此表示“被与……联想起来”。