人体中哪些组织声衰减系数高并可能伴有声影(). A.肌腱 B.肌肉 C.脑 D.脂肪 发布时间:2017-07-02 21:51 │ 来源:www.tikuol.com 题型:单项选择题 问题: 人体中哪些组织声衰减系数高并可能伴有声影().A.肌腱B.肌肉C.脑D.脂肪E.肝脏
题型:单项选择题 She ________ a model before she _______ a superstar.A.have been, becameB.had been, becomeC.had been, becameD.has been, become 查看答案