【简答题】English for Special Purposes The Sadrina Project An intermediate course featuring English for travel and the travel business. Twelve twenty-minute episodes on film and videocassette, with a textbook. ...
【简答题】已知:△ABC在坐标平面内,三个顶点的坐标分别为A(0,3),B(3,4),C(2,2),(正方形网格中,每个小正方形的边长是1个单位长度) (1)画出△ABC向下平移4个单位得到的△A 1 B 1 C 1 ,并直接写出C 1 点的坐标; (2)以点B为位似中心,在网格中画出△A 2 BC 2 ,使△A 2 BC 2 与△ABC位似,且位似比为2∶1,并直接写出C 2 点的坐标及△A 2 BC 2...