赤峰市高三年级11·20模拟考试试题英语试题-2026卷行天下答案网

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chemical reactions and physical features using only a few materials. Read on to see how to do theexperimentHow does the magic milk experiment work?In this experiment, you pour some milk in a shallow dish. You then add drops of food coloring to thesurface of the milk.Using a cotton swab (棉签)dipped into dish soap that is put aside,you lightly brush thesurface of the milk. The dish soap breaks the surface tension of the milk, and the soap molecules(分子) tryto attach to the fat molecules in the milk. This leads to bursts of fun rainbow colors.What does the magic milk experiment teach?This experiment teaches us about the science of molecules and how matter interacts(相互作用).Thesoap breaks down the fat molecules and makes them move apart, showing us a simple but interestingexample of chemistry in action.Materials needed:To do the magic milk experiment, you will need a shallow bowl or plate, milk, blue dish soap, cottonswabs, and food coloring.Be sure to use the more inexpensive food coloring instead of gel(凝胶) coloringwhich does not work as well.Magic milk experiment steps:●Pour milk into a shallow dish or bowl, just enough to cover the bottom●Add drops of food coloring all over the surface of the milk●Dip the end of a cotton swab into a separate dish of blue soap●Lightly brush the top of the milk with the cotton swab, and watch what happens21.What brings about bursts of fun rainbow colors in the experiment?A. The cotton swab used to brush the surface of the milkB. The food coloring that has been left in the shallow dish.C.The physical reactions of the dish soap and food coloringD.TheinteractionbetweenmoleculesofdishsoapandmilkA.MilkB.Dish soapC. Food coloringD.The cotton swab.23.Which of the following is one correct step of the experimental procedure?A.Pourthemilkintothecontaineruntil itisfullB. Run the cotton swab gently over the milk's surface.C.Add food coloring to the milk to create a mixture.D. Dip one end of a cotton swab into the blue milk.BI was scared when I was speaking in front of twenty people for the first time. My fear showed in mypace. I finished a 35-minute talk in 25 minutes. A professor asked me to slow down toward the end of thetalk. But the damage had been done. People didn't get the messageI was feeling like trash.My boss didn't help.He repeatedly asked me why I'd got carried away.No,not asked. He shouted in my face. Nothing has ever stressed me out more than that conversation. I stillthought of myself as a failure when I recovered. But I was probably the only one seeing myself that way.There's this trick that helps me keep my attitude under control. When I'm feeling super emotional, Ineed to rely on good old common sense. It says people forget you the moment they leave the room.Let me explain. There was a guy, Marc, who came to my new lab for a job interview. A job interviewis a talk in academia.Marc was late for his own talk. He misplaced figures in his PowerPoint presentationMarc was so worried at the end that he cut anyone asking him a question and began answering it. He高二英语学科试题第3页（共8页）

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