题目我国县域常住人口约7.48亿人,占全国人口总数的比例约为多少?()A. 50.97%B. 51.97%C. 52.97%D. 53.97%我国县域常住人口约7.48亿人,占全国人口总数的比例约为多少?()A. 50.97%B. 51.97%C. 52.97%D. 53.97%题目解答答案C. 52.97%