诱发肺心病心功能失代偿的最常见原因是
C
暂无解析
Somestudentsfromaskingquestionsinclass.（）
每个人都是平等的，不管他是总统还是马路清洁工。翻译
Expertshavefoundthatnormalsleepcanbedividedintofive______stages
Itwillbeinterestingtoseewhat’sgoingtohappenatthenext________(elect).
Weallknowaboutthe_____thatsmokingcandotoourhealth.
