2022英语周报高考10期答案

16.【答案】C解析:基因A表达才能合成紫色素,而基因B表达时基因A表达受抑制,而成为白色,因此白色昆虫的基因型为AB或aa,而紫色的基因型是AAbb或Aabb:AAbb和aBB两个品种杂交,F1为AaBb体色应为白色:F1自交,F2的基因型为:AB、aaB、Abb、abb,其比例为9:3:3:1,其中紫色为-白色为9 3 1,因此F2中紫色:白色为3:13,C错误。因此白色个体的基因型:AB4种,aB3种共计7种,D正确

第三节书面表达wersionDear Sir or MadamMy name is Li Hua. As an exchange student fromChina, I am studying in a local school. I am reallydelighted to learn that a volunteer for your Chinese culturallic exhibition is required and I'm confident that I amtruly fit for thestart with, my advantage first lies in the fact that IChina and used to beand quite familiar with Chinese relics. Further-more, being an outgoing and optimistic boy, I am good atcommunicating with others and introducing Chinese cultureto the world is always my honor and my pleasure. Finallythere is no problem with my spoken English, as I havelived here for almost a year and I have no difficulty commu-dicating with others in EnglishI would really appreciate it if you can offer me thechance to be a volunteer in your museum. I am looking forward to your early reply.Li Hua

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