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Proponents of international regulation of environmental issues have always struggled against scientific uncertainty and economic hostility, two obstacles which, form a political standpoint, often have been closely related, as economic hostility toward environmental regulation for economic reasons have (i)_____ the considerable uncertainty underlying most environmental challenges to (ii)_____ of environmental regulation.
- exaggerate the efficacy
- downplay the legitimacy
- question the fallibility
exploited , downplay the legitimacy 显示答案