17. Carson presents her case so strongly and logically that only the prejudiced or the ______ will attempt to ______ her.
A. impartial, defy
B. doubtful, champion
C. gullible, believe
D. obstinate, contradict
E. irrational, follow
18.
Over the years the anthropologist's opinions had ______ : he refused to tolerate new ideas and nothing could change his mind.
A. disgressed
B. proliferated
C. ossified
D. germinated
E. incubated