单选题 The author of the report is well ______ with the problems in the hospital because he has been working there for many years.
  • A.informed
  • B.acquainted
  • C.enlightened
  • D.acknowledged
【正确答案】 B
【答案解析】[解析] be acquainted with是固定搭配,意为“对……熟悉”,故答案为B。