题目

求曲线的离心率。 答案：解析:由得，∴，∴，∴，∴。单词拼写根据句意和音标提示以适当形式填写单词。请将答案填写在答题卡指定位置。【1】I arrived at the ___________ /'ept / at six this afternoon.【2】Do you know that I am ___________ /'dbl/ your age?【3】I’m sorry to tell you that I can’t ___________ /'fd/ that beautiful car.【4】The meeting was __________ /' knsld/ because of the accident.【5】I’d like to know the __________ / wet/ of that panda.【6】Do you have any good ______________ / s' destn/ for me?【7】Do you know the ___________ /' ttl / area of the country?【8】Would you please ___________ /' skl / your name in the list?