单选题 When he was in Congress, Joseph Martin, Jr., of Massachusetts was noted for {{U}}keeping in touch{{/U}} with his constituents.
  • A. cooperating
  • B. conniving
  • C. celebrating
  • D. communicating
【正确答案】 D
【答案解析】D项communicate“保持联系，联系”，与划线词意义相近。A项cooperate“合作”；B项connive“默许，纵容”；C项celebrate“庆祝”。