2025届群力考卷答案网

21.(1)含红DNA(2)鸡血细胞液中DNA相对含量高(3)成熟红细胞中无细胞核(4)研磨（每空2分）22.(1)高温加热(1分)(2)引物(2分)互补DNA链(2分)(3)热稳定TagDNA聚合(2分...

万唯中考试题研究·化学（云南）微专题12物质的除杂微专题14酸碱盐之间的分段反应例1B例2A☒典例串讲例3例D杂质离子除杂试剂（写化学式）【难题分解突破】第一步：...

(1)细胞图像C→A属于▲分裂。图中A细胞名称是E细胞中含▲个染色体组。(2)图A、B、C、E中含有同源染色体的是(2分)。(3)图AC细胞在正常分裂产生精子时，B基因与B基因...

(2)某小组探究外界因素对CH,COONa水解程度的影响。甲同学设计实验方案如下（表中溶液浓度均为0.10molL):i实验和(填序号)，探究加水稀释对CH,COONa水解程度的影响...

己知：2S,03+I2=S406+2I①滴定终点现象为；②产品纯度为(用m、c、V表示)。(6)下列装置和试剂不能代替E的是(填标号)。碱石灰浓硫酸NaOH固体CaCl2溶液abcd【答案】(1...

答案：(1)bd(2分)(2)0.25(2分)；0.025mol·L-1·min-1(2分)(3)30%(2分)(4)>(2分)(5)27：40(2分)

(5)相同条件下，D与金属钠反应比水与金属钠反应要(填“剧烈”或“缓慢”)。(6)E在强碱性环境下是否可以水解？(填“可以”或“不可以”)。E的一氯代物有种（不考虑立体异...

12.向含有无色酚酞溶液的氢氧化钠溶液中慢慢滴入稀硫酸，该过程中溶液pH的变化如图所示。下列分析借误的是A.M点时溶液呈红色B.向N点时的溶液中加入氧化铁，溶液...

11,D接通电源一段时间，电热板上的红磷燃烧并产生大量的白烟，A正确；红磷燃烧一段时间后熄灭，说明反应后剩余气体不能燃烧，也不支持燃烧，B正确；氧气约占空气...

【解题分析】由题可知电子从导电玻璃电极流出，经外电路流入透明电极，则透明电极为电池的C项错误：NO会与饱和食盐水中的水发生反应生成污染性气体NO,D项错误。...

17.(共14分)(1)①防止催化剂中毒（1分)②C(1分)③NH;CO(2分)(2)①NH3*+H*=NH3*(2分)-(a-b)(2分)②NH;浓度较大时，占据催化剂表面更多活性位点，阻碍N2的吸附(2分)(3)...

(1)要研究海螺的生态位，需要研究的方面有(答出3点即可)。该生态系统中各种生物都占据者相对稳定的生态位，其意义是会环天米尊粮系。接出破法这类生长，若春合虫...

听第10段材料，回答第17至20题。,l7.miogaetheidadeapenmgeiea0pa-AiSwimnigPoalgA.The local peopleB.The officials in the City Council.C.The workers in the...

2022高考名校导航冲刺金卷（一）参考答案、提示及评分细则听力部分录音稿(Text 1)M:Do we have any more homework for spring vacation,Mrs.Fallon?W:Just what...

We Can Save,shows a diverse range of experts,all working to handle climate issues.Thebook led to a new project that provides support and community for...

30.Which aspect of space architects is paragraph 3 mainly about?第二节（共5小题；每小题2分，满分0分）A.Their duties.B.Their challenges.C.Their dreams....

周测卷十单句填空1.in 2.whoever 3.entirely 4.bacteria 5.organic 6.nutritional 7.to digest 8.depth 9.poverty10.for阅读理解一份报告表明，比起电子游戏和电...

M:But you must realize that this is a famous brand.W:I just want to get one for my daughter to learn how to play the piano.M:Then how about this one?I...

So,even though Mother Duck had told them never toswim in the middle of the river,Quack swam to it.(B)61.Frank,a student studying in Beijing,says that...

Facilitators二全国©0所名校高考模拟金典卷reaThis ty of visitors may need toe themfeisdpiaorcemetaucencebyewtpehnseaieAoaganof people,possibly thchildre...

十堰市2022~2023学年度上学期期末调研考试题高一英语参考答案听力部分录音材料听力部分。该部分分为第一、第二两节。注意：做题时，先将答案标在试卷上。录音结...

参考答案及深度解析24贵州省2022届普通高等学校招生适应性测试选择题答案速查'Such measures will help to speed up China's economy and题号2122n2526272830eco...

第37期参考答案及解析人与自我一一个人生活参考答案28-31 ABDC解析本文是记叙文。作者讲述了他如何发现并喜欢上滑板运动，之后为何放弃，最后又如何重新找回这个...

本领找到了迷路的Compean,最终帮助Compean成功获救。24.D。理解具体信息。根据第一段中的But after walking along a new path last April,the45-year-old man go...

出一个最佳这项。短文读西通。)11.What day was it?A.It was May Day.B.It was Mother's Day.C.It was Father's Day.What were Mr.King and Adam doing when Mrs...

听第7段材料，回答第8、9题。8.What are the speakers mainly talking about?A.Their hobbies.B.An activity holiday.C.The teamwork spirit.9.What did the wom...

the open cut into rooting powder,I put it in the soil with a few water.Usually it takes4-6weekweekslittle2023年高考英语模拟试题（四）参考答案及评分标...

g,m如本压通g学以例球于强与，你一gm在g征m一s能gm无化能s可生g五要形修eds如证年国多e三一在a=量Asa人，出盘=rgs可华g面dles and anything the boy loweds1y2,A...

30.What mainly causes environmentalists to opposebuilding the island?阅A.The waste of natural resources.阅21.Which app can help you save time?B.The im...

mini-me!本版供槁人：河南张梦春山西王喆（本版参考答案见下期）第9期参考答案7.Do;meet;they don'tB)下面你将听到五组对话，每组对话都有一个at school.It's at...