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1、衡水金卷·2022-2023学年度高三一轮复习摸底测试卷(四)理科数学答案
2、衡水金卷先享题 2022-2023学年度高三一轮复习摸底测试卷[老高考] 历史(一)1试
3、衡水金卷答案高三一轮复习摸底测试卷答案2022-2023三
One possible versionThen I wondered whether the man would still be at the same spot. I walked out the doorand back to the street where I had met him. There the man was, at the same spot, knees curledup against his chest, with the same cardboard sign shading his head. I walked down the street,and before I could think twice, I stood before him. He cautiously glanced in my direction.Ismiled and held up the lunch bag. “I brought you some lunch, “I saidI handed him the bag, and he looked closely at it. ” Thank you for this. I was praying thismorning, asking for someone,s heart to open. We talked for a little while. As he shared hisstory, there was an, open, honest tone in his voice. There was something about giving thatmade me feel like I was talking with a brother. “I hope you have a nice day, “I told him<“Thank you! It’s already gotten a lot better, ” he said. As I walked by, his thank fulness hadbecome mind. My day, too, had already gotten a lot better. Anything helps, indeed
$$19.(1)NO2^-+H2OHNO2+OH^-$$(4)b→c→g→i→f→h→e(3分);促进$$Fe^3+$$水解转化为$$Fe(OH)3$$沉淀,同时使过量$$H2O2$$分解除去(2分)$$(2)NaNO2$$没有将KII氧化成$$I2$$$$(3)2I^-+2NO2^-+4H^+2NO+I2+2H2O$$(4)有紫色泡沫产生,溶液呈紫黑色;实验Ⅱ试管溶液中产生NO的速率较慢,且产生的量较少,肉眼难以观察到液面上方出现红棕色(5)无明显现象(每空2分)
