第2题: [单项选择]According to the selection, muscle participation in the process of thinking is ______. A. deliberate B. obvious C. not readily apparent D. very pronounced 参考答案:C 答案解析:[注释] 本题的依据是短文中的最后一句,关键部分是this participation is less obvious,这与选项C. not readily apparent意思相当。