摘要:从方框中选择适当的句子完成对话. A: What are you doing, Linda? B: 26 A: An experiment? What is it about? B: A theory about air pressure. I fill a jar with water. I cover the top with a piece of cardboard. Then, I turn the jar upside down. 27 A: I think we can’t do it inside. I’m sure that the floor will get wet. B: No, 28 A: Why? The water won’t stay in the jar. B: 29 . A: Great! 30 . A. it won’t B. I’m busy doing an experiment C. Think about what will happen? D. We’ll do the experiment and make observation E. We can prove who is right.

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