【单选题】

While we may be interested in the possibilities of social harmony and individual fulfillment that may be achieved through nontraditional education, one cannot help being______about accepting any such program as a______the world's ills.
A．(A) concerned … warning of

B．(B) cautious … panacea for
C．(C) fastidious … prescription for
D．(D) reticent … renovation of
E．(E) agitated … postscript to