2024安徽江淮十校高三第一次联考语文答案

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2024安徽江淮十校高三第一次联考语文答案试卷答案，以下是该试卷的部分内容或者是答案亦或者啥也没有

,19.B【解析】基因A控制果蝇的长翅性状,但将孵化后基因型为AA的长翅果蝇幼虫放在35~37℃(正常培养温度为25℃)环境中处理一定时间后,却表现出残翅性状,这说明残翅性状受基因组成和环境条件的共同影响,A项正确;现有一只残翅雄果蝇(a或A_),让该果蝇与多只正常发育的残翅雌果蝇(aa)交配,孵化的幼虫在正常的温度环境中培养,若后代出现长翅,则该果蝇的基因型为AA或Aa,若后代表现均为残翅,则该果蝇的基因型为a,B项错误、C项正确;基因A、a为一对等位基因,等位基因一般存在于同源染色体的相同位置,D项正确。,,22:(13分,除标注外,每空1分)(1)黏性末端平末端(2)切割产生的DNA片段末端与EcoRI切割产生的相同(2分)(3)TE·coli(4)mRNA(或“RNA”)cDNA(或“DNA")PCR(5)λ噬菌体的衍生物(2分)动植物病毒(2分)【解析】(1)限制性核酸内切酶可以将DNA分子切成平末端或黏性末端。(2)为使不同酶切割之后的DNA片段便于相连,则两种酶切后所产生的黏性末端必须相同。(3)DNA连接酶可分为TDNA连接酶和E·COlinA连接酶。(4)反转录是以mRNA为模板逆转录先合成单链DNA,再合成双链DNA。可利用PCR技术进行大量扩增反转录产物。(5)基因工程中除质粒外,动植物病毒和λ噬菌体的衍生物也可作为运载体,

12.D“根本变革”说法错误,①不选;人的价值有大小之分,②说法错误

13.(1)①整体是由部分构成的,国家是由千千万万个“你”构成。国家开展人口普查,“没你不行”。②整体居于统率地位,部分要服从整体。国家要求全面查清我国人口数量、结构、分布等方面最新情况,作为每个公民应服从相关要求,“没你不行”。③部分是整体中的部分,对整体也会有不同程度的影响。国家开展人口普查,需要公民自觉履行相关义务,也需要公民作出更多贡献,“没你不行”。(每点4分,共12分。考生如有其他答案,言之成理可酌情给分)

(2)略。(每点4分,共8分。本题具有发散性,考生答案符合要求可酌情给分)

【参考范文】The little boy headed back down to the old man's house. The thought of knocking at the oldman's door filled the little boy with fear, but he still knocked on the door, waiting breathlesslyFinally, it opened, and out came the old man. Seeing the boy holding a well-wrapped dog figurinehe looked very astonished but still glared at him without a word Determined to break the ice. theboy gave the old man the gift with a precious card attached, expressing sincerely caring about himDeeply moved by all the boy did, the old man could say nothing but to hug him tightly, with tears ofappreciation welling up. Out of gratitude, he bought a magazine from the boyFrom that day on something changed inside the old man. He adopted a real live dog and treatedhim as his child. It seemed that it was the company of the dog that led the lonely soul out ofdarkness and loneliness. Gradually, he was willing to greet others with a bright smile, expressinghis appreciation to life. Indeed, only when we open up the door of our heart can we be bathed inthe brilliant sunshine and enjoy the warmth of love and care

3.C【解析】盐酸和酒精配成解离液,目的是使细胞分离,A项错误;本实验的操作步骤是解离一漂洗一染色一制片,B项错误;只有分生区细胞能进行细胞裂若在视野中观察不到分裂期的细胞则有回能观察的不是分生区,C项正确;解离时洋葱细胞已经死亡,因此无法观察细胞连续分裂过程,D项错误。