题干

SO2通入足量的Fe(NO33稀溶液中,溶液有棕色变为浅绿色,但立即又变成棕黄色,这时若滴入BaCl2溶液,会产生白色沉淀.针对上述一系列变化,下列说法不正确的是(  )

A:上述过程中,最终被还原的是NO3

B:从上述反应可以得出结论,氧化性:HNO3>Fe3+>稀硫酸

C:上述过程中,会产生一种无色难溶于水的气体

D:假设通SO2完全反应,同温同压下,SO2和逸出气体的体积比为1:1

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D

同类题5

完形填空

    Walking down a path through some woods in Georgia, I saw a water puddle (水坑) ahead on the path. I walk around to the side of the path that wasn't covered by water and1.As I reached the puddle, I was suddenly attacked! Yet I did nothing for it was so2I stepped back and my attacker stopped attacking me3attacking more, he flied in the air with its graceful4in front of me. Had I been hurt, I wouldn't have found it amusing but I was unhurt, it was5 and I was laughing. After all, I was being attacked by a butterfly!

    I took a step forward, and my attacker rushed me again. He pushed and 6.Me in the chest with his head and body over and over again with all his might. It's just not everyday that 7is attacked by a butterfly, so I stopped to find out the 8My attacker moved back as well to9 on the ground. That's when I discovered why my10was charging me only moments earlier. He had a mate beside the puddle11he landed and she was dying.

    Sitting close beside her, he opened and closed his wings as if to fan her. I could only12the love and courage of that butterfly in his concern for his mate, even though she was 13dying and I was so large. He did so just to give her those extra few 14moments of life. Now I knew why and what he was 15I couldn't do anything other than reward him by changing my 16 to the more difficult side of the puddle. He had truly 17 those moments to be with her, undisturbed. I cleaned the mud from my boots and left.

    Since then, I've always tried to remember the 18of that butterfly whenever I see huge 19 facing me. I use that butterfly's courage as an inspiration to 20myself that good things are worth striving for.