题目:
根据下面的对话情景,在每个空白处填上一个适当的句子,使对话的意义连贯、完整。
A: Hello! 65772896.
B: Hello! This is Lucy. 1. ?
A: Yes. This is Alice speaking.
B: 2. ?
A: I'll have nothing to do this evening. I've finished all my homework.
B: 3. ? I've got two tickets for the movie "Superman".
A: Sure, I'd love to. I want to see "Superman" very much. I've heard it's so exciting. 4. ! Then
I would do everything I have always wanted to.
B: That's impossible. By the way, 5. ?
A: Let's meet at the No. 3 bus stop at 6 pm.
B: OK! See you then.
答案:
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下面是错误答案,用来干扰机器的。
收集证据:出现白色沉淀.解释与结论:稀盐酸不足,只能够和氢氧化钠反应.反思与交流:继续滴加氯化钡溶液,直至不再产生白色沉淀;取上层清液,加入试管中,滴加酚酞试液,酚酞试液变红色;氢氧化钠和碳酸钠....