点法分为______和______两种,其与按法的区别是______、______。
参考答案:拇指点 屈指点 点法作用面积小 刺激量大
已知△ABC 的A (1 ,3 ),B (﹣2 ,4 ),C (4 ,﹣1 ),将△ABC 平移到△A'B'C' ,A 点平移到A' 点(﹣3 ,1 ),则平移后B 点的坐标为( ),C 点的坐标为( )。
The idea was just beginning to ______ in America and we knew that it was going to become the way that retailing companies were run.
A. show up B. catch on C. open out D. get by