单选

Which of the following is the main idea of Paragraph 2?

  • A.People are naive about the effects of brain games.
  • B.It is people's greatest concern to keep fit mentally.
  • C.People are misled about the power of brain games.
  • D.It is difficult to prove the positive effects of brain games.
参考答案
¥

订单号:

遇到问题请联系在线客服

订单号:

遇到问题请联系在线客服