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.
正确答案是D
扫描二维码免费使用微信小程序搜题/刷题/查看解析。
版权声明:本文由翰林刷题小程序授权发布,如需转载请注明出处。