By discovering how to (i)______an affordable substitute for cortisone from soybeans, Percy Julian helped to make arthritis treat

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问题 By discovering how to (i)______an affordable substitute for cortisone from soybeans, Percy Julian helped to make arthritis treatment (ii)______large number of people.

选项

答案B,F

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。
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