福建省德化一中、永安一中、漳平一中三校协作2022-2023学年高二下学期5月联考数学试题

福建省德化一中、永安一中、漳平一中三校协作2022-2023学年高二下学期5月联考数学试题-福建高考早知道试卷答案,我们目前收集并整理关于福建省德化一中、永安一中、漳平一中三校协作2022-2023学年高二下学期5月联考数学试题-福建高考早知道得系列试题及其答案，更多试题答案请关注微信公众号：趣找答案/直接访问www.qzda.com(趣找答案)

福建省德化一中、永安一中、漳平一中三校协作2022-2023学年高二下学期5月联考数学试题-福建高考早知道试卷答案，以下是该试卷的部分内容或者是答案亦或者啥也没有

32.(1)R和r(回答完整才得分)(1分)B系和R系(1分)(2)繁殖A系的方案:以A系作母本与B系杂交,从A系植株上收获的F1即为A系(2分)繁殖B系的方案:B系自交即可实现繁殖(2分)繁殖R系的方案:R系自交即可实现繁殖(2分)(3A系花粉不育,只能作为母本杂交,从A系植株上收获的F1的核基因型均为Rr。若用B系与R系杂交,由于二者均能自交,F1的核基因型中除Rr外,B系上还有rr,R系上还有RR,因此需要对母本品系进行人工去雄处理,花小且工作量大,难以大量获得(4分)解析:(Ⅰ)核基因才会遵循基因分离定律,质基因不会遵循此定律;A系为雄性不育系,不能产生可育花粉。(2)因A系为雄性不育系,因此繁殖A系时要以A系作母本与B系杂交,A系提供质基因S、核基因r,B系提供核基因r;繁殖B系只需要B系自交即可;繁殖R系只需要R系自交即可。(3)A系花粉不育,只能作为母本杂交,从A系植株上收获的F1的核基因型均为Rr。若用B系与R系杂交,由于二者均能自交,F1的核基因型中除Rr外,B系上还有r,R系上还有RR,因此需要对母本品系进行人工去雄处理,花小且工作量大,难以大量获得

5C【解析】材料表格中的支出总额超过了收入,说明了小农经济之下,农民的生活比较困顿,小农经济的根基脆弱,C项正确。材料无法体现我国古代农业生产经营的技术特点,排除A项;材料没有体现小农经济中的男耕女织,B项错误;D项只是表面现象,与题干主旨不符排除。

参考范文:

Dearpeter

I'mLihua.Imgladtotellyouthataprogramcalled"WereAllDreamChasers"willbeheldnextweek.Iwanttoinviteyoutotakepartinit,knowingyouredeeplyinterestedinwriting.Thedetailedin-formationabouttheprogramisasfollows.Duringtheactivity,alloftheparticipantsaresupposedtorepresenttheirdreamsespeciallythoseinspirethem.Havingfinishedit,participantshavetoemailittostudentunion567(126.corn,besidesexpertswillbeinvitedtogradethecompositionsandawardprizestothewinners.Dorememberthepro-gramwilllastonemonthfromnextmondayookingforwardtoyourparticipation.

Yourssincerely,

LiH

第二节【写作提示】1.审题:(1)明确故事人物:本故事中主要人物为蒙蒂;(2)厘清主要事件:蒙蒂小时候随着做驯马师的父亲四处奔波,一次上课时,老师要求学生们写一篇关于梦想的文章,他在文中写到他想要拥有自己的马场,然而老师却认为他的目标不切实际,并要求他重写。2.写作要点:(1)蒙蒂回去思考是否要重写文章以及是否放弃老师所谓的“不切实际的”梦想;(2)20年后蒙蒂实现了老师眼中“不切实际的”梦想,老师大为吃惊,但也就此鼓舞学生向蒙蒂学习,努力追求自己的梦想。参考范文】The boy went home and thought about it long and hard. Havingnoticed the slight difference in Monty, his father accompanied the littleboy without any word until he asked in a low voice, Dad, have you everchanged your dream? Noticing the confusion on the young face, hisfather said without hesitation," Never, it is my treasure. It suddenlydawned on Monty that compared with getting an F for the paper, he wouldmore pained if he chose to give up on his dream. Making up his mindhe took his paper, and headed for the teacher. With determined eyesMonty said, "I am sorry. I'd like to keep working at my dream.Twenty years later, the teacher brought 30 students to camp out on aranch for a week. Learning Monty was the rancher, she was numb withsurprise. Wearing obvious guilt, she said to him, "Sorry for what I said atTwenty years later, the teacher brought 30 students to camp out on aranch for a week. Learning Monty was the rancher, she was numb withsurprise. Wearing obvious guilt, she said to him, " Sorry for what I said atthat time. Monty replied with a smile, Actually, I should thank you forletting me know what my dream meant to me." When the tour was about toend, the teacher called the students together and said in an emotional voiceKids, remember, be brave to pursue your dreams regardless of the realisticconditions. When she finished the words, a clap came from behind. It wasfrom Monty And soon, the students joined him.【点评】该范文围绕原文内容进行了非常合理的续写,紧扣语境,与原文逻辑紧密,详略得当。第一段紧扣原文最后一段中老师要求蒙蒂重写一个实际点的梦想,讲述了蒙蒂思考自己的梦想是否如老师所说是不切实际的,并在最后通过与父亲的谈话坚定了自己的梦想。第二段则紧承第一段内容,讲述蒙蒂坚持并实现了最初被老师认为不切实际的梦想。文章通过描述老师鼓舞其他学生们要勇于追求自己的梦想升华了文章的主题。以上内容既合理地对故事情节进行了延续,又将整个故事带入到一段十分鼓舞人的情境中。此外,该范文中不乏较为高级的表达,如 without hesitation, make up one' s mind,determined, be numb with surprise, regardless of等高级词汇和短语以及 It dawned on sh.tha.,定句型、现在分词短语作状语、when引导的时间状语从句等句式,使得文章语言表达丰富优美。

20.(1)证明:如图,连接A1C.在△AAC中,A1A=2,AC=1,∠A1AC=60°,由余弦定理得A1C=3,1分所以A1C+AC=A1A2,所以A1C⊥AC2分同理A1C⊥BC.……………3分又因为BC∩AC=C所以A1C⊥平面ABC.4分因为A1CC平面A1ACC1,所以平面ABC⊥平面A1ACC5分(2)解:以C为坐标原点,CA的方向为x轴的正方向,建立如图所示的空间直Br角坐标系C-xyz,则A(1,0,0),B(2·2,0),C(0,0,0),A1(0,0,3),A6分A=(-1,0,),=(-3,,0),AB=(-1,,一月),A1D237分m·AA1=-x1+/z1=0设平面A1AB的法向量为m=(x,y1,z),则33令z1=1,得m=(3,3,1)8分1·A1B=-1x2+2y-5a2=0设平面PA1B的法向量为n=(x2,y,z2),则nD=-1x-2令z2=1,得n=(-23,0,1),9分所以cxm,n)=mm万×万11分因为二面角P-A1B-A为锐角,所以二面角P-A1B-A的余弦值为12分评分细则:【1】第(1)问请严格按步骤给分;【2】第(2)问中,法向量的取法不唯一,计算正确正常给分