单选题 Theories have features that are (indicative) of their truth, and the. task of justification is to identify these features and (using them) to guide choices (as to) (which theories) to believe
  • A. indicative
  • B. using them
  • C. as to
  • D. which theories


【正确答案】 B
【答案解析】[解析] 此处为(to)+动词原形。