填空题求助

liushuaiyi

4. New research on technology and public policy focuses on how seemingly ______design features, generally overlooked in most analyses of public worksprojects or industrial machinery, actually ___social choices of profound significance.
Blank (i) Blank (ii)
A insignificant D mask
B ingenious E represent
C innovative F hasten

第一空A没问题，和后面的profound significance取反。关键是第二个我觉得mask和hasten都能理解，有没有其他线索可以快速看出正确答案呢？