#2016年大学英语四级选词填空习题及答案(6) 搜索结果
Formanyenvironmentalists,theworldseemstobegettingworse.Theyhavedevelopedahitlistofourmainfears:naturalresourcesare1__________out?thepopulationisevergrowing,leavinglessandlesstoeat?speciesarebeing2__________
