单选题 People don't realize how serious this recession has actually been.
  • A. know
  • B. think
  • C. doubt
  • D. remember


【正确答案】 A
【答案解析】[解析] realize：意识到，和know(知道、了解到、熟悉)意思相近；think：认为、觉得；doubt：怀疑、疑惑、疑问；remember：回忆起、纪念。