英语周报 2018-2022 高二 外研综合 3答案

16.BCD【解析】“精明的捕食者”策略是指捕食者般不能将所有的猎物吃掉,否则自己也无法生存猎物和捕食者的每一点进步都会促进对方发生改变,这种现象在生态学上也体现了物种间的共同进化,有利于种群的发展,A项正确;人为因素可导致种群发生定向进化,如人工选择,B项错误;可遗传变异的来源是基因突变、基因重组和染色体变异,可遗传变异为生物进化提供原材料,不可遗传的变异不能为进化提供原材料,C项错误生活在一定自然区域的同种生物的全部个体(即种群)是生物进化的基本单位,D项错误。

One possible version:Dear Janehere will he a Huangmei Opera vs, Qiong Opera concert in our sehool. Knowing that you are interested in Chineselocal operas, I' d like to invite you to attend itThe concert is to be held in the lecture hall of our school at 7: 00 pm this Sunday. Some teachers and students willperform Huangmei opera and Qiong opera. Im sure they will give you a very impressive concert, through which you willearn more about our local operas.Looking forward to your coming.Yours sLi He

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