题目

（1） 水是人类最宝贵的自然资源。电解水的文字反应式为，该反应属于(填化合或分解)反应。 （2） 保护水资源，防止水污染是每个公民和全社会的责任。下列做法有利于防止水资源污染的是①农业生产中要合理使用农药和化肥 ②工业废水和生活污水处理达标后再排放③不用含磷洗衣粉④将海水淡化A ①②④ B ②③④ C ①②③ D ①②③④ （3） 长期使用硬水，会给生活和生产带来许多麻烦。区别硬水和软水的常用试剂是。生活中将硬水情景交际。A. I hope your English will improve soon.B. I can't get the pronunciation right.C. I have some problems with my English.D. Keeping a diary can improve your writing skills.E. Then you can look them up n a dictionary if necessary.F. I'm afraid to speak English in front of others.G. And I can't understand the teacher when she talks to the classA: Hello. This is Hope English Club. Can I help you?B: Yes. 【1】A: What are your problems?B: First of all, 【2】A: This is easy. Why not read aloud to practice it? It will improve your speaking skills.B: OK, I will. 【3】A: Listening to more tapes will help improve your listening skills. B: What about new words?A: First, you should try to guess the meaning of them. 【4】B: OK, I will do as you say. Thanks a lot.A: You're welcome.【5】