2022英语周报高二49期答案

16.D解析:电流互感器原线圈的匝数小于副线圈的匝数,因此是一种升压变压器A项错误;电流互感器的工作原理与变压器的工作原理一样,只能测量交流电路的电流,B项错误;由于原线圈与副线圈中磁感应强度的变化是同步的,原、副线圈中交流电的频率相同,C项错误根据=nm,由手m2>n,所以1>2,D项正确

One possible versionSeveral minutes later, the ice broke suddenly and Harry's feet sank into the water. It was noep, but his legs got wet to the knees. Harry was so upset that the accident would delay hisschedule. He had to find some firewood to build a fire to dry his clothes. He pulled off his glovestook out his matches, and lighted the fire. Seeing the burning fire, he had thought he was safe. Butsuddenly, without warming, a heavy mass of snow dropped down. The flame of hope was put outUnluckily, his dog ran away and the fear of death came over Harry. He had no choice but torun to save himself. However, he did not feel his feet when they hit the ground. Having falleneveral times, he decided to rest a while. As he lay in the snow, he noticed he was not shaking. Hecould not feel his nose or fingers or feet. A feeling of horror came into his mind. It was when herealized he was going to die that he heard a bark and the noise his friends made

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