【判断题】高锰酸钾法,高锰酸钾既做滴定液,又做指示剂。
【多选题】随机排列和设置重复相结合对试验结果的作用是:
【简答题】补全对话。 A. Could you tell me where they are? B. Oh, that's too bad. C. What are you looking for? D. Can I help you? E. That's very kind of you. Miss Gao: Good morning. 1. Jenny: Yes, please. I want some...
【简答题】Read and answer. 阅读对话,根据对话内容回答问题 。 Jenny: Hi, Dotty. What are you looking at? Dotty: Oh, Jenny. Some photos. Jenny: Photos? Who is this baby? Dotty: It was me. I was one year old. Jenny: You were so s...