居住建筑面积密度与建筑容积率() A. 是完全不同的概念,无法比较 B. 互为倒数 C. 互为相反数 D. 内涵一致 参考答案:D
第3题: [单项选择]He ________ in the next room. A. is often heard to sing B. often heard to sing C. is often heard sing D. is often hearing to sing 参考答案:A 答案解析:[妙翻巧译] 人们经常能听到他在隔壁屋子里唱歌。 [解析] 含有使役动词或感官动词(如:make、let等)+宾语+动词原形的结构的被动形式为:be+使役动词或感官动词的过去分词+to+动词原形