根据以下资料回答题The United States is a democracy in that __________ 根据以下资料回答题The United States is a democracy in that __________. 分类:GRE 题型:单选题 查看答案
When (heat) __________, iron can be changed into liquid. When (heat) __________, iron can be changed into liquid. 分类:GRE 题型:单选题 查看答案