已知：如图，E（-4，2），F（-1，-1），以O为位似中心，按比例尺1：2，把△EFO缩小，则点E的对应点E′的坐标为____.

文中写了几件事？请用简洁的语言来概括事件内容。

如图，在四边形ABCD中，AB∥DC，E是CB的中点，AE的延长线与DC的延长线相交于点F．

求证：AB=FC．

阅读短文并选择正确答案。
    Helen is an English schoolgirl. She is now in Nanjing with her parents. She doesn't know Chinese. She often tries to speak Chinese to her Chinese friends. Sometimes they don't understand(理解) her, because she can't speak Chinese well.
    It's a Sunday morning. Helen wants to go to Zhongshan park. She is going there to see a flower show(展览). But she doesn't know how to go there. She asks a Chinese boy. The boy can't understand her. Then she takes out a pen and some paper. She draws a park and some flowers on it and gives the picture to the boy and says something about it. The boy smiles and then shows Helen the way to the park.

下列措施不适合用于矿区生态环境恢复的是（　　）