单选题 A research center has been {{U}}set up{{/U}} in this country.
  • A. praised
  • B. established
  • C. reformed
  • D. criticized
【正确答案】 B
【答案解析】[解析] set up“成立，建立”，四个选项：praise“表扬”；establish“建立”；reform“改革，改造”；criticize“批评，指责”。