2023英语周报高一课标第31答案

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【参考范文】One day, Spotty returned from his daily walk with a broken leg. Appearing exhausted, he came to myroom and sat near me, the leg bleeding. I called my mother and she quickly tied a bandage around his leg andgave him food to eat. I was very upset. But the next day, Spotty followed me wherever I went happily asusual though he limped a bit. After this incident my relation with Spotty became more intense. I reallyadmired him a lot for his courageAlmost a year later, one midnight we heard Spotty barking breathlessly. We rushed out and saw himbarking continuously, heading somewhere. After some time Spotty became quiet. I patted him on his backand came inside. The next morning, my heart skipped a beat when I didn't see Spotty. I searched for him ineach and every corner but in vain. And this time he had gone and would never come back. I cried and waitedfor him. But there were no signs of him and I only say him looking at me with his sparking eyes in my dream

环上4个氢原子处于对称位置,苯环上只有两种氢原子,二氯代物有4种,D正确;容架4.D装置A中CC山可以溶解溴蒸气,所以可以除去HBr中的溴蒸气,A项正确;装置B的中硝酸银溶液的作用是检验B,B项正确;实验室制氯气的原理是4HC(浓)+MnO2MnCl+C++2H2O,所以可用装置C制取CU,C项正确;装置D反应一段时间后铁丝与溴单质反应生成溴化铁,溴化铁是该反应的催化剂,所以抽出铁丝反应不会终止,D项错误形成的化合物

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