多选题 By discovering how to ______ an affordable substitute for cortisone from soybeans, Percy Julian helped to make arthritis treatment ______ large number of people.
【正确答案】 B、F
【答案解析】[解析] ● By表示方式,说明前后同义重复。
● 第二空与affordable substitute同义重复。prohibitive for对……价格过高的,irrelevant to无关的,feasible for对……可行的,答案选F。
● 第一空带入句中,eliminate删除,synthesize合成,compromise妥协,答案选B。