2018-2022 英语周报 高一 课标 14 GDY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

22.D【解析】基因型为Aa的水稻自交一代的种子全部种下,待其长成幼苗后,人工去掉隐性个体,则AA占1/3、Aa占2/3。甲组全部让其自交,只有Aa植株上会出现aa的种子,因此植株上基因型为a的种子所占比例=2/3×1/4=1/6;乙组让其自由传粉,由于A配子的概率为2/3、a配子的概率为1/3,因此植株上基因型为a的种子所占比例为1/3×l/3=1/9。故选D。

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