英语周报 2018-2022 高三 AHW 0答案

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

6.D【解析】分析题图可知,错误折叠的蛋白A作为信号激活内质网膜上的受体形成转录因子进入细胞核调控伴侣蛋白基因的表达;据图分析可知.转录因子和伴侣蛋白mRNA通过核孔进出细胞核:错误折叠的蛋白质与内质网中的伴侣蛋白结合而被“扣留”在内质网中,在伴侣蛋白作用下,错误折叠的蛋白A空间结构发生改变,形成正确折叠的蛋白;蛋白A和伴侣蛋白属于不同的蛋白质,閃此由细胞核中不同的基因编码。故选D

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