Unit 4（）Text A. VocabularyFill in the blank in the following sentence with one of these words and change the form if necessary. (fare, alternately, quandary, accredited, intervene, stigma, transformative, derisively, deem, compassion) 18. As biological re

Unit 4（）Text A. VocabularyFill in the blank in the following sentence with one of these words and change the form if necessary. (fare, alternately, quandary, accredited, intervene, stigma, transformative, derisively, deem, compassion) 18. As biological research races forward, ethical （） are piling up.
正确答案：quandaries