英语周报高二提升版二十五期答案

【参考范文】To whom it ma concernI am one of your customers. I ordered a set of English short stories on your online store ofAmazon a month ago, but I didn't receive them until yesterday. And much to my disappointmentthe books were so poorly packed up that the package is broken and the cover of one book was tornTo make matters worse, it is not a complete set, for I found one book missingI am sorry to have received such poor service, and I believe I have every right to ask you todeal with this problem. I hope that you either return my money or deliver a new set of books to meBesides, I'd like to be informed of the process of your dealing with my complaintLooking forward to your reply.L

36.℃【解析】“”型增长指的是种群数量呈指数型增长,年龄组成呈增长型的种群其数量不一定呈指数型增长,A项错误;种群的K值即环境容纳量,K值和环培有关,迁入大量同种个体不会改变环境容纳量,B项错误;婚配方式为一夫一妻制”的种群中,处于生殖期个体的雌雄比例越接近1:1,则种群出生率越高,C项正确;不是所有种群的年龄金字塔都有生殖前期、生殖期和生殖后期三个年龄组,例如单细胞生物、蝉等,D项错误。

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