【简答题】Oral translation ( page . 96 ) . Choose one from the following two parts (The first is from “ although ” to “ group solidarity ” and the second is from “ Cultural values ” to “ similar circumstances ”...
【简答题】Although each of us has a unique set of values, there also are values that tend to permeate a culture. These are called cultural values. Cultural values generally are normative in that they inform a m...
【单选题】已知直线y=k(x-3)与双曲线 x 2 m - y 2 27 =1 ,有如下信息:联立方程组 y=k(x-3) x 2 m - y 2 27 =1 消去y后得到方程Ax 2 +Bx+C=0,分类讨论: (1)当A=0时,该方程恒有一解; (2)当A≠0时,△=B 2 -4AC≥0恒成立.在满足所提供信息的前提下,双曲线离心率的取值范围是( )