题目

数x，y在数轴上的对应点的位置如图所示，则化简|x＋y|－|y－x|的结果是( ) A . 0 B . 2x C . 2y D . 2x－2y 答案：CRead and write. (用括号内所给单词的适当形式填空。)1. ___ (Do) he live in Beijing?2. Tom ____ (have) a new pen pal.3. She likes ____ (listen) to music.4. What are your father’s _____ (hobby)?5. She is a ____ and she ____ English.(teach)6. Do you want ____ (cook)?7. There ____ (be) a dance class tomorrow.8. I’m _____ (make) cakes now.9. Does your pen pal ____ (like) dancing?