题目内容:
IntheexperimentdescribedinParagraph3,thevideo-watchersexperiencedadownturnintheantibodybecause________.
A.thevideowasnotenjoyableatall B.theoutcomewasbeyondtheircontrol
C.theyknewlittleaboutsurgicalprocedures
D.theyfeltnopressurewhilewatchingthevideo
参考答案:
答案解析: