215. In his vivid representations of the African American experience, painter Romare Bearden often used colors so ______ that viewers could not take their eyes off his works of art.
A. sensible
B. residual
C. vibrant
D. mannered
E. formulaic
216. By discovering how to ______ an affordable substitute for cortisone from soybeans, Percy Julian helped to make arthritis treatment ______ large numbers of people.
A. eliminate, superfluous for
B. synthesize, prohibitive for
C. compromise, feasible for
D. constitute, irrelevant to
E. create, accessible to