题目内容:
Underwhatcircumstancedidparticipantsrespondcorrectlyfaster? A.Whentheywereincompletesilence.
B.Whentheywerelisteningtoslowandsadmusic.
C.WhentheywerelisteningtotheAutumnconcerto.
D.WhentheywerelisteningtotheSpringconcerto.
参考答案:
答案解析: