题目

When you are learning English, listening, speaking and writing are important, but reading can also be very helpful．When you read, you can not only learn some new words, but also you can learn how to use these English words．When you read, it gives you a good example for writing． Good reading tips． Try to read at the right level（水平）．Read something that you can （more or less） understand．If you need to stop every three words to use a dictionary, it is not interesting． Try to increase the number of your new words．If there are four or five new words on a page, write th（2008•淮安）如图所示的网格中有A、B、C三点．（1）请你以网格线所在直线为坐标轴建立平面直角坐标系，使A、B两点的坐标分别为A（2，-4）、B（4，-2），则C点的坐标是______；（2）连接AB、BC、CA，先以坐标原点O为位似中心，按比例尺1﹕2在y轴的左侧画出△ABC缩小后的△A′B′C′，再写出点C对应点C′的坐标______．