单选题 In the country we are excluded from the worries of life in a big town.
A. enveloped B. protected C. insulated D. subtracted

【正确答案】 C

【答案解析】exclude拒绝接纳，把……排除在外；enveloped封住，包住；protected保护；insulated隔绝，绝缘；subtracted减去。