[全国名校大联考]2025~2026学年高三第一次联考(月考)试卷生物学CS答案

[全国名校大联考]2025~2026学年高三第一次联考(月考)试卷生物学CS答案于2025-09-11发布，目前免费查试卷答案网站已经汇总了[全国名校大联考]2025~2026学年高三第一次联考(月考)试卷生物学CS答案的各科答案和试卷，更多试卷答案请关注免费查试卷答案网站。

本文从以下几个角度介绍。

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Li Lei didn’t do well in his last English test. He was 52 to tell his parents his exam result because they might be angry with him. He didn’t want to talk with his classmates, either. He thought they might laugh at 53 . He wanted to learn English well, so Li Lei decided to talk with his English teacher Mr. Green and 54 him for help after school. Li Lei 55 Mr. Green that he was having trouble with grammar and vocabulary. Mr. Green told him that it was very common for students to make 56 in exams, and he shouldn’t lose heart. And then Mr. Green gave him some advice on 57 to improve his grammar and vocabulary. Mr. Green told Li Lei that he could learn more words 58 reading English magazines. Mr. Green said that Li Lei should try to guess the meaning of the new words first and then 59 them up in a dictionary. He said that taking grammar notes in class 60 using the grammar to make sentences could help a lot. 61 , Li Lei felt much better after the conversation and made a plan about his English studies.
阅读短文，用方框中所给词的适当形式填空，使短文完整、正确。 (每词限用一次)
sentence; well; have; pronounce; let; by; patient; aloud; much; textbook
I have a pet parrot. When I read the word 62 in the yard, it said the same word. When I read the 63 , it could also say something from the book word by word. Can the parrot learn to say a whole 64 What about 65 it listen to tapes So, I began to 66 a try. Amazingly, the 67 the parrot listened to the conversations, the better its 68 became.
One day, my friend Linda came to see the parrot. She asked it, “Hey, how can you speak so well ”
“ 69 practicing.” “Who do you like 70 , me or Mike ” “Of course Mike. Though you are pretty, he’s 71 with me!”
从方框中选择适当的词并用其正确形式填空，使短文完整、通顺。每空限填一词，每词限用一次。

46．但学生为什么要参加课外活动呢？根据should students do after-school activities "和首字母提示可知，提问为什么，why疑问词，故填why。
47．做课后活动是一个很好的休息。根据"First, doing after-school activities is a ... rest."可知，此处需要一个形容词修饰名词rest，结合首字母提示和上下文可知，这是一次好的休息。故填good。
48．在休息之后，学生可以更仔细的听老师和更好的写作业。根据"After the rest, students can listen to the teachers more carefully and do their ... better."可知，学生的任务是写作业，homework"作业"，不可数名词。故填homework。
49．学生也许发现他们很容易交朋友。根据"while doing after-school activities."可知，当课外活动的时候，应当是和同学一起玩，因此可以交朋友，make friends"交朋友"。故填friends。
50．当他们进行课外活动时，他们会互相交谈并有很多时间来更好地了解彼此。根据each other和talk，可知是彼此交谈，talk with，和某人聊天，故填with。
51．学生也可以从活动中得到一些新的技能。根据"Finally, students can ... get some new skills from activities."可知，此处句子结构完整，应考虑副词，结合首字母提示，also"也"符合语境。故填also。
52．Subject；53．week；54．favorite；55．gift；56．idea；57．going；58．with；59．last；60．finish；61．know

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B.将浓度均为6.00×10-6mol/L的RCl2、Na2CO3溶液等体积混合后可得到RCO3沉淀
C.25 ℃时，RSO4的Ksp为4.90×10-5
D.相同温度下，RCO3在水中的Ksp大于在Na2CO3溶液中的Ksp
解析： RSO4(s)＋CO(aq) RCO3(s)＋SO(aq)的平衡常数K＝ eq \f(c(SO),c(CO))＝ eq \f(c(R2+)·c(SO),c(R2+)·c(CO))＝＝1.75×104，Ksp(RSO4)＝1.75×104×Ksp(RCO3)＝4.90×10-5。A项，RSO4、RCO3属于同种类型的难溶电解质且Ksp(RSO4)＞Ksp(RCO3)，故向c(CO)＝c(SO)的混合液中滴加RCl2溶液，首先析出RCO3沉淀，A项错误；B项，将浓度均为6.00×10-6mol/L的RCl2、Na2CO3溶液等体积混合后，c(R2+)＝3.00×10-6mol/L、c(CO)＝3.00×10-6 mol/L，Q(RCO3)＝c(R2+)·c(CO)＝3.00×10-6×3.00×10-6＝9.00×10-12＜Ksp(RCO3)，不会产生RCO3沉淀，B项错误；C项，根据上述计算，Ksp(RSO4)＝4.90×10-5，C项正确；D项，Ksp只与温度有关，与浓度无关，相同温度下RCO3在水中的Ksp与在Na2CO3溶液中的Ksp相等，D项错误。
7．氢氧化镁是常见难溶物，将过量氢氧化镁粉末置于水中达到溶解平衡：Mg(OH)2(s) Mg2+(aq)＋2OH－(aq)。已知Ksp[Mg(OH)2]＝1.8×10-11，Ksp(MgCO3)＝3.5×10-8；通常，溶液中某离子的浓度小于1×10-5mol/L时，可以认为该离子已沉淀完全。下列有关说法不正确的是(　B　)
A.滴入几滴稀硫酸，溶液的pH先下降后上升，最后保持一个稳定值
B.MgCO3的饱和溶液中c(Mg2+)＝c(CO)

(2) 0.07 增大

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