多选题 Like several other important advances in medicine, penicillin was a some-what ______ discovery resulting from ______ combination of blind chance and technical expertise.
【正确答案】 C、D
【答案解析】[解析] ● resulting from说明前后同义重复。
● 两空联动，同义重复。
● progressive进步的，untimely时间不恰当的，accidental意外的；favorable有利的，unlucky不幸的，reliable可靠的。答案选CD。