18.There are several explanations for the high proportion of responders who knew of the ( ) of fraud, other than the low response rate.
A.consequence B.emergence C.occurrence D.prevalence正确答案C
18.There are several explanations for the high proportion of responders who knew of the ( ) of fraud, other than the low response rate.
A.consequence B.emergence C.occurrence D.prevalence正确答案C
