【简答题】Part V Writing (25 minutes) Directions: This part is to test your ability to do practical writing. You are required to write an Invitation Letter based on the following information given in Chinese. R...
【多选题】Another reason convenience foods are likely to become more popular is the increase in the number of women with children, who work in full-time employment. 2. In the UK, for example, working mothers si...
【简答题】已知锐角△ABC中的三个内角分别为A,B,C. (1)设 BC ? CA = CA ? AB ,求证:△ABC是等腰三角形; BC (2)设向量 s =(2sinC,- 3 ), t =(cos2C,2cos 2 C 2 -1),且 s ∥ t ,若sinA= 2 3 ,求sin( π 3 -B)的值.