厦门市2022届高三毕业班第四次质量检测英语答案

厦门市2022届高三毕业班第四次质量检测英语答案，目前答案易对网已经整理了厦门市2022届高三毕业班第四次质量检测英语答案的各科答案和试卷，更多联考试卷请关注本网站。

4.B【命题意图】本题考查生物进化的相关加识，意在考查考生的理解能力。【解析】维蝇求偶时提供食物给雌蝇，一方面是为了获得交配机会，另一方面有利于雌蝇获得更多的营养物质繁殖后代，这是一种长期进化形成的适应性行为，变异是不定向的，A错误：雄蝇把食物裹成丝球送给雄蝇进行求偶，雌蝇选择这些雄蝇有利于种群的繁衍，不会送食物的雄蝇可能被淘汰，这种行为是雕蝇对雄蝇长期选择的结果，B正确：突变和基因重组为缝蝇的进化提供原材料，但不能决定缝蝇的进化方向，自然选择决定生物进化的方向，C错误：雌雄绳交配产生后代的过程中，可能会出现子代致死、某些个体没有交配机会等现象，导致种群的基因库和基因频率发生改变，D错误。

作:One possible versionr LieI am Li Hua. one of the students who chose your video lessons. Here I am writing with the punpose of expressing mysincere gratitude from the bottom of my heartDunng the first half year of 2020, you taught many pra:tical leaming skills in your video lessons. I made great pro-gress in English, especially in the pronunciation. I don't know what my English would be without your patient help. Lastweek, I took part in the English speech competition which wus held by our school. And to my great jov. I won the firstAnd the judges spoke highly of my speech, saying that my pronunciation sounded like the native. How proud I am/Thank vou so much, dear Lucy. I do wish you all the bestLi Hua