单选题 Delegates agree to the plan in ______ , but there were some details they didn’t approve.
  • A. discipline
  • B. theory
  • C. principle
  • D. nature
【正确答案】 C
【答案解析】本题考点为介词与名词的固定搭配。in principle意为“原则上、大体上”，故选项C符合题意。