阶段检测卷

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第一次阶段性检测B卷(考试版)【测试范围:第一、二单元】(部编版)A4版

第一次阶段性检测B卷(考试版)【测试范围:第一、二单元】(部编版)A4版

2022-2023学年下学期阶段性检测B卷七年级·语文(考试时间:120分钟试卷满分:120分)注意事项:1.本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。

答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。

2.回答第Ⅰ卷时,选出每小题答案后,用2B铅笔把答题卡上对应题目的答案标号涂黑。

如需改动,用橡皮擦干净后,再选涂其他答案标号。

写在本试卷上无效。

3.回答第Ⅱ卷时,将答案写在答题卡上。

写在本试卷上无效。

4.测试范围:第一单元、第二单元。

5.考试结束后,将本试卷和答题卡一并交回。

一、积累与运用(共34分)1.阅读下列文字,给加点字注音,根据拼音写汉字。

(4分)鲁迅先生是中国无产阶级文学的diàn______基人。

他是镶qiàn______在中国文学星空中的一颗璀璨的明星,他用生命的全部光芒,划亮了充塞天地之间的黑暗和寂静。

在他的作品中有很多人物形象,如:阿Q、祥林嫂、孔乙己、闰土等,在中国妇孺.______皆知。

阅读着他的作品,我们仿佛又看到了漆黑寒夜中,他那横贯亘.______古和穿透世人灵魂的深邃目光。

2.下列词语没有错别字的一项是(2分)()A.嗥鸣调羹疙瘩警报迭起B.誓言高梁辔头群蚁排衙C.镐头深宵攀谈历尽心血D.谣言田垄班斓莫名其妙3.下列句子中加点成语使用有误的一项是()A.这件事错综复杂,虽多方核查,仍给人以扑朔迷离....之感,使人难明真相。

B.黄昏时,古城五彩的灯光把渠水辉映得五彩斑斓....。

C.新冠肺炎疫情暴发,钟南山院士再次挺身而出奔赴一线,是妇孺皆知....的“抗疫英雄”。

D.党员干部凡事要首当其冲....,工作中迎难而上,公益活动也要带头参加。

4.下列句子没有语病的一项是(2分)()A.多所学校举行世界环境日教育活动,其目的是让学生了解环保知识和环境意识。

B.能否在公共场所保持人与人之间的安全距离,是巩固防疫成果的重要前提。

C.通过观看谷爱凌的短片,我们明白了自律是取得成功的关键。

2023年春学期七年级道德与法治阶段性检测试卷

2023年春学期七年级道德与法治阶段性检测试卷

2023年春学期七年级道德与法治阶段性检测试卷第Ⅰ卷(选择题)一、单项选择题(每小题只有一个最符合题意的答案,请将正确选项字母代号涂在答题卡对应的位置上。

每小题2分,共28分。

)1.在个体发展中,情绪反应出现在先,情感体验发生在后。

已经形成的情感,常常要通过具体的情绪表现出来。

对此,下列理解正确的是( )A.情感使我们的内心世界更加丰富B.情感就是情绪,二者没有区别C.情感和情绪既有区别又有联系D.情感是复杂多样的2.林则徐的“苟利国家生死以,岂因祸福避趋之”这句诗体现的是()A.忧国忧民的情怀B.在有祸时要保障个人利益C.对英雄的崇敬之情D.为国家牺牲个人利益的爱国情怀3.诺贝尔生理学或医学奖得主屠呦呦的获奖感言:“这个荣誉属我和我的团队,也属整个国家。

”这说明()A.民族文化是民族的根B.集体利益服从个人利益C.集体应充分尊重和保障个人利益D.集体生活成就“我”4.教室,没人督促不扫;黑板,老师不来不擦;垃圾,班委不叫不倒;一些勤快的学生往往被冷嘲热讽为“假积极”“爱出风头”。

这些现象表明( )A.学生只要把精力全部投入到学习中去就是好学生B.生活中一些小事不会对集体产生不良影响C.某些学生的责任意识比较淡薄,没有承担起关爱集体的责任D.勤快的同学为班级出力,就是为了得到老师的表扬5.在某校秋季运动会上,七(1)班荣获多项冠军。

班长在总结会上说:“冠军,从来就不是一个人的。

”体育委员说:“荣誉是授予我们大家的。

”这两句话体现的共同观点是:()A.集体中不能有小团体B.要增强团队意识和集体荣誉感C.集体是由个体组成的D.只要团结奋斗,就能获得冠军6.崔鸿说;“单则易折,众则难摧。

”其义是指()A.学校是我们成长的园地 B.团结就是力量C.个人在集体中成长 D.要增强集体荣誉感7.2022年女足亚洲杯中国队与韩国队决赛中,中国队在0∶2落后的情况下,全体队员立志为国争光,密切配合,众志成城,连扳三球,终以3∶2取胜。

江苏省扬州市江都区重点中学2023-2024学年八年级上学期10月阶段检测语文试卷(含答案)

江苏省扬州市江都区重点中学2023-2024学年八年级上学期10月阶段检测语文试卷(含答案)

江都区第三中学2023-2024学年第一学期八年级语文学科阶段检测(考试时间:150分钟满分:150分)2023.10积累运用(29分)在学习了新闻单元后,八年级组织开展了阅读交流会,以下是小语的发言稿,请你根据要求完成下面小题。

学习《人民解放军百万大军横渡长江》,令我们领略了战士们冲破敌人重重阻遏、歼灭和击溃一切顽抗敌人的气势,那气势只能用“A.锐不可当”来形容;学习《首届诺贝尔奖颁发》,我们了解到诺贝尔奖是根据诺贝尔的遗嘱设立的,是为了奖励那些为人类做出巨大贡献的人;朗读《“飞天”凌空——跳水姑娘吕伟夺魁记》,我们仿佛看到了中国姑娘吕伟在第九届亚运会中夺得十米跳台跳水冠军的英姿和观众那B.振聋发聩的掌声和欢呼声;朗读《一着惊海天——目击我国航母舰载战斗机首架次成功着舰》,我们心潮澎湃豪情万丈,追思与缅怀、光荣与梦想、决心与信念,在同一时刻汇聚:我们的祖国真正强大起来了!我不禁由zhōng地产生敬佩之情,种种令人骄傲的事迹永远juān刻在我的心头。

岁月悠悠,C.沧海桑田,当年英勇的红军为了让后人有幸福的生活不惜牺牲自己,如今我国涌现出一批又一批的热血人民,为了祖国的繁荣昌盛而D.殚精竭虑。

我们难道应该学习他们一丝不苟的精神吗?1.根据拼音写汉字或给加点字注音。

(4分)(1)由zhōng()(2)juān刻()(3)凌空()(4)着舰()2.文中划横线的成语使用不正确的一项是(3分)()A.锐不可当B.振聋发聩C.沧海桑田D.殚精竭虑3.下列句子没有语病的一项是(3分)()A.学习《人民解放军百万大军横渡长江》,令我们领略了战士们冲破敌人重重阻遏、歼灭和击溃一切顽抗敌人的气势。

B.我们了解到诺贝尔奖是根据诺贝尔的遗嘱设立的,是为了奖励那些为人类做出巨大贡献的人。

C.我们仿佛看到了中国姑娘吕伟在第九届亚运会中夺得十米跳台跳水冠军的英姿和观众那振聋发聩的掌声和欢呼声。

D.我们难道应该学习他们一丝不苟的精神吗?4.下面对课文内容的理解正确的一项是(3分)()A.消息的最大特点是时效性强和真实客观,消息的正文一般包括导语、主体、背景和结语四部分(后两部分有时暗含在主体中),通常呈“倒金字塔结构”。

山东省济南市外国语学校2022-2023学年七年级上学期期末阶段性检测语文试卷

山东省济南市外国语学校2022-2023学年七年级上学期期末阶段性检测语文试卷

济南外国语学校 2022-2023 学年度第一学期初一语文阶段性测试题2023 年 1 月注意事项:1.本试卷共五个大题,24 个小题。

2.全卷满分 150 分,考试时间 120 分钟。

3.答卷前务必将姓名、班级、考号准确输入平台。

4.主观题拍照一定要清晰完整。

—、(18 分)阅读下面的文段,完成 1〜2 题。

大明湖的曾堤如一条青黄相间的绒带,默默地伸向湖心,微风在天地间酝酿.成一首轻灵的诗,一叶孤舟就像诗中的主角,在澄.清的水面上飘浮着;远处的烟霞,仿佛青灰色薄纱,(xiᾱng)嵌在起伏的远山上,与辽阔的云(xiᾱo)应和.着。

眼前的明湖秋景,不是春的娇媚,不是夏的粗犷.,不是冬的憔(cuì)。

是什么?我说不出,只觉得眼前的画面静(mì)极了. 悠远极了,高洁极了。

1.上面文段中加点字的读音正.确.的一项是()(3 分)A. niàng dèng hè kuàngB. hàng chéng hékuángC. niàng chéng hè guăngD. hàng dèng hèguăng2.上面文段中画横线的词语书写正.确.的一项是()(3 分)A.馕嵌云宵憔悴静谧B.镶嵌云霄憔悴静谧C.馕嵌云霄樵悴静秘D.镶嵌云宵樵悴静秘3.下列句子没.有.语.病.的一项是()(3 分)A.阅读人类历史长河中积淀下来的经典文学作品,会拓宽我们的人生感受和视野。

B.“国家宝藏”节目受到观众广泛好评的原因,在于它的文化内涵非常丰富。

C.随着中国自主研发、制造电子芯片的崛起,使某些西方国家的阻碍发展战略失策。

D.为了防止酒驾事件不再发生,我市交警加大了检查力度。

4.下列句中加点成语使.用.正.确.的一项是()(3 分)A.大家认为他提出的这个办法很有创意,都随.声.附.和.表示赞成。

山东省枣庄市第三中学2022-2023学年高二10月阶段检测数学试题及答案

山东省枣庄市第三中学2022-2023学年高二10月阶段检测数学试题及答案

枣庄三中高二年级10月阶段检测考试数学试题本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。

满分150分,考试用时120分钟。

答卷前,考生务必将自己的姓名、准考证号、考试科目填涂在答题卡和答题纸规定的地方。

第Ⅰ卷(选择题共60分)一、单项选择题(本大题共8小题,每小题5分,共40分.在每小题给出的四个选项中,只有一项是符合题目要求的)1.设x ,y R ∈,向量(a x = ,1,1),(1b = ,y ,1),(2c = ,4-,2),且a c ⊥ ,//b c,则||(a b += )A .B C .4D .32.若直线30x my ++=与直线460mx y ++=平行,则(m =)A .12B .12-C .12或12-D .不存在3.在正四面体ABC P -中,棱长为2,且E 是棱AB 的中点,则PE BC ⋅的值为()A .-1B .1C .3D .374.直线04cos =++y x α的倾斜角的取值范围()A .[)π,0B .⎪⎭⎫⎝⎛⋃⎥⎦⎤⎢⎣⎡πππ,24,0C .⎪⎭⎫⎢⎣⎡⋃⎥⎦⎤⎢⎣⎡πππ,434,0D .⎥⎦⎤⎢⎣⎡4,0π5.如图所示,在棱长为1的正方体ABCD-A1B 1C 1D 1中,E,F 分别为棱AA 1,BB 1的中点,G 为棱A 1B 1上的一点,且A 1G =λ(0≤λ≤1),则点G 到平面D 1EF 的距离为()A B .22C .23D .556.已知长方体1111ABCD A B C D -中,1B C ,1C D 与底面ABCD 所成的角分别为60 和45 ,则异面直线1B C 和1C D 所成角的余弦值为A .4B .14C .6D .67.如图,等边三角形ABC 的边长为4,M ,N 分别为AB ,AC 的中点,沿MN 将△AMN 折起,使得平面AMN 与平面MNCB 所成的二面角为30°,则四棱锥A -MNCB 的体积为A .32B .32C .D .38.已知点o2,−3),o −3,−2).若直线G m +−−1=0与线段B 相交,则实数的取值范围是()A .3,44⎡⎤-⎢⎥⎣⎦B .1,5⎛⎫+∞ ⎪⎝⎭C .[)3,4,4⎛⎤-∞-⋃+∞ ⎥⎝⎦D .34,4⎡⎤-⎢⎥⎣⎦二、多项选择题(本大题共4小题,每小题5分,共20分.在每小题给出的四个选项中,有多个选项是符合题目要求的,全部选对的得5分,选对但不全的得2分,有选错的得0分)9.有下列四个命题,其中正确的命题有()A .已知A ,B ,C ,D 是空间任意四点,则0AB BC CD DA +++=B .若两个非零向量,AB CD 满足AB CD +=0 ,则AB CDC .分别表示空间向量的有向线段所在的直线是异面直线,则这两个向量可以是共面向量D .对于空间的任意一点O 和不共线的三点A ,B ,C ,若OP xOA yOB zOC =++(x ,y ,z ∈R),则P ,A ,B ,C 四点共面10.已知直线G m ++1=0,1,0,3,1,则下列结论正确的是()A .直线l 恒过定点0,1B .当=0时,直线l 的斜率不存在C .当=1时,直线l 的倾斜角为34D.当=2时,直线l 与直线B 垂直11.如图,PA ⊥平面ABCD ,正方形ABCD 边长为1,E 是CD 的中点,F 是AD 上一点,当BF ⊥PE 时,则()A .AF ∶FD =1∶1B .AF ∶FD =2∶1C .若PA =1,则异面直线PE 与BC 所成角的余弦值为23D .若PA =1,则直线PE 与平面ABCD 所成角为30°12.在棱长为1的正方体中1111ABCD A B C D -中,点P 在线段1AD 上运动,则下列命题正确的是()A .异面直线1C P 和1CB 所成的角为定值B .直线CD 和平面1BPC 平行C .直线CP 和平面11ABCD 所成的角为定值D .三棱锥1D BPC -的体积为定值.第Ⅱ卷(非选择题,共90分)三、填空题(本大题共4小题,每小题5分,共20分.把答案填在题中横线上)13.已知(1A ,2,0),(3B ,1,2),(2C ,0,4),则点C 到直线AB 的距离为_____.14.如图,在空间直角坐标系中有直三棱柱ABC ­A 1B 1C 1,CA =CC 1=2CB ,则直线BC 1与直线AB 1夹角的余弦值为________.15.若A (a ,0),B (0,b ),C (2-,2-)三点共线,则11a b+=.16.在空间直角坐标系中,定义:平面α的一般方程为)0,,,,(0222≠++∈=+++C B A R D C B A D Cz By Ax ,点),,(000z y x P 到平面α的距离222000CB A DCz By Ax d +++++=,则在底面边长与高都为2的正四棱锥中,底面中心O 到侧面的距离等于________.四、解答题(本大题共6题,共70分.解答时应写出必要的文字说明、证明过程或演算步骤)17.(10分)在三角形ABC 中,已知点A (4,0),B (-3,4),C (1,2).(1)求BC 边上中线所在的直线方程;(2)若某一直线过B 点,且y 轴上截距是x 轴上截距的2倍,求该直线的一般式方程.18.(12分)如图,四面体ABCD 中,E ,F 分别为AB ,DC 上的点,且AE =BE ,CF =2DF ,设DA DB DC ===a,(1)以{}a,b,c 为基底表示FE;(2)若∠ADB =∠BDC =∠ADC =60°,且433DA DB DC == =,,,求FE.19.(12分)如图,在四棱锥P ABCD -中,底面ABCD 是矩形,M 是PA 的中点,PD ⊥平面ABCD ,且4PD CD ==,2AD =.(1)求AP 与平面CMB 所成角的正弦.(2)求二面角M CB P --的余弦值.20.(12分)已知两直线l 1:ax -2y =2a -4,l 2:2x +a 2y =2a 2+4(0<a <2)与两坐标轴的正半轴围成四边形.当a 为何值时,围成的四边形面积取最小值?并求最小值.21.(12分)如图所示,在直三棱柱ABC -A1B 1C 1中,∠ABC =90°,BC =2,CC 1=4,EB 1=1,D ,F ,G 分别为CC 1,B 1C 1,A 1C 1的中点,EF 与B 1D 相交于点H .(1)求证:B 1D ⊥平面ABD .(2)求证:平面EGF ∥平面ABD .(3)求平面EGF 与平面ABD 的距离.22.(12分)如图,已知SA 垂直于梯形ABCD 所在的平面,矩形SADE 的对角线交于点F ,G 为SB 的中点,2ABC BAD π∠=∠=,112SA AB BC AD ====.(1)求证:BD //平面A E G ;(2)求平面SCD 与平面ESD 夹角的余弦值;(3)在线段EG 上是否存在一点H ,使得BH 与平面SCD 所成角的大小为6π?若存在,求出GH 的长;若不存在,说明理由.枣庄三中高二年级10月阶段检测考试数学答案一单选题DBAC DAAC 二、多项选择题9.BD 10.BD 11.AC 12.ABD 三、填空题13.14.5515.12-16.552四、解答题(17.(1)∵B (-3,4),C (1,2),∴线段BC 的中点D 的坐标为(-1,3),…………………………………………………2分又BC 边上的中线经过点A (4,0),∴y =x -4),即3x +5y -12=0,故BC 边上中线所在的直线方程3+5−12=0.…………………………………………5分(2)当直线在x 轴和y 轴上的截距均为0时,可设直线的方程为y =kx ,代入点B (-3,4),则4=-3k ,解得k =−43,所以所求直线的方程为y =−43x ,即4x +3y =0;……………………………………………7分当直线在x 轴和y 轴上的截距均不为0时,可设直线的方程为+2=1,代入点B (-3,4),则−3+42=1,解得m =−1,所以所求直线的方程为2x +y +2=0,………………………………………………………9分综上所述,该直线的一般式方程为4x +3y =0或2x +y +2=0.……………………………10分18.如图所示,连接DE .因为FE ―→=FD ―→+DE ―→,FD ―→=-DF ―→=-13DC ―→,DE ―→=12(DA ―→+DB ―→),所以FE ―→=12a +12b -13c .………………………………………………………6分|FE ―→|2+12b -13c =14a 2+14b 2+19c 2+12a ·b -13a ·c -13b ·c =14+14×+19×+12×××12-13×××12-13×××12=274.所以|FE ―→|=332.………………………………………………12分19.(1)∵ABCD 是矩形,∴AD CD ⊥,又∵PD ⊥平面ABCD ,∴PD AD ⊥,PD CD ⊥,即PD ,AD ,CD 两两垂直,∴以D 为原点,DA ,DC ,DP 分别为x 轴,y 轴,z 轴建立如图空间直角坐标系,…1分由4PD CD ==,2AD =,得()2,0,0A ,()2,4,0B ,()0,4,0C ,()0,0,0D ,()0,0,4P ,()1,0,2M ,则()2,0,4AP =- ,()2,0,0BC =- ,()1,4,2MB =-,.………………………………2分设平面CMB 的一个法向量为()1111,,n x y z = ,则1100BC n MB n ⎧⋅=⎪⎨⋅=⎪⎩,即111120420x x y z -=⎧⎨+-=⎩,令11y =,得10x =,12z =,∴()10,1,2n =.………………………………………………4分∴1114cos ,5AP n AP n AP n ⋅==⋅,故AP 与平面CMB 所成角的正弦值为45..……6分(2)由(1)可得()0,4,4PC =-,.………………………………………………7分设平面PBC 的一个法向量为()2222,,n x y z=,则2200BC n PC n ⎧⋅=⎪⎨⋅=⎪⎩,即22220440x y z -=⎧⎨-=⎩,令21y =,得20x =,21z =,∴()20,1,1n =,……10分∴12cos ,10n n ==,故二面角M CB P --的余弦值为10……………12分20.解:两直线l 1:a (x -2)=2(y -2),l 2:2(x -2)=-a 2·(y -2),都过点(2,2),………2分如图:设两直线l 1,l 2的交点为C ,且它们的斜率分别为k 1和k 2,则k 1=a 2∈(0,1),k 2=-2a2∈∞∵l 1与y 轴的交点A 的坐标为(0,2-a ),l 2与x 轴的交点B 的坐标为(2+a 2,0).…………6分∴S OACB =S △OAC +S △OCB =12(2-a )·2+12·(2+a 2)·2=a 2-a +4+154.……………10分∴当a =12时,四边形OACB 的面积最小,其值为154.……………………………………12分21.如图所示,建立空间直角坐标系,设A 1(a ,0,0),则B 1(0,0,0),F(0,1,0),E(0,0,1),A(a,0,4),B(0,0,4),D(0,2,2),G (2,1,0).(1)B 1D →=(0,2,2),AB →=(-a ,0,0),BD →=(0,2,-2).∴B 1D →·AB →=0+0+0=0,B 1D →·BD →=0+4-4=0.∴B 1D ⊥AB,B 1D ⊥BD.又AB∩BD=B,∴B 1D ⊥平面ABD.………………………………4分(2)∵AB →=(-a ,0,0),BD →=(0,2,-2).GF →=(-2,0,0),EF →=(0,1,-1),∴GF →=12AB →,EF →=12BD →.∴GF ∥AB,EF ∥BD.又GF∩EF=F,AB∩BD=B,∴平面EGF ∥平面ABD.…………………………………8分(3)方法一:由(1)(2)知DH 为平面EFG 与平面ABD 的公垂线段.设B 1H →=λB 1D →=(0,2λ,2λ),则EH →=(0,2λ,2λ-1),EF →=(0,1,-1).∵EH →与EF →共线,∴2λ1=2λ−1−1,即λ=14,∴B H →=(0,12,12),∴HD →=(0,32,32),∴|HD →∴平面EGF 与平面ABD ………………………………12分方法二:由(2)知平面EGF ∥平面ABD,设平面ABD 的法向量为n=(x,y,z),则n ⊥AB →,n ⊥BD →,∴解得x =0,y =z,取z=1,则n=(0,1,1),∵ED →=(0,2,1),∴d=即平面EGF 与平面ABD ………………………………………………12分22.(1)连接FG .在△SBD 中,F 、G 分别为,SD SB 的中点,所以//FG BD .又因为FG ⊂平面A E G ,BD ⊄平面A E G ,所以//BD 平面A E G .……………………4分(2)因为SA ⊥平面ABCD ,,AB AD ⊂平面ABCD ,所以,SA A S B A A D ⊥⊥.又2BAD π∠=,所以AB AD ⊥.以,,AB AD AS为正交基底建立如图所示的空间直角坐标系A xyz -.则()0,0,0A ,()()()()()1,0,0,1,1,0,0,2,020110,0,,1,0,,2,1,,2B G C D S E ⎛⎫ ⎪⎝⎭.()1,1,0CD =-,()1,1,1SC =- .设平面SCD 的一个法向量为(),,m x y z = .则00m CD m SC ⎧⋅=⎨⋅=⎩,即00x y z y z -+=⎧⎨+-=⎩,令1x =,得1,2y z ==.所以平面SCD 的一个法向量为()1,1,2m =.又平面ESD 的一个法向量为()1,0,0AB =.所以cos ,6||||m AB m AB m AB ⋅===⨯ 所以平面SCD 与平面ESD夹角的余弦值为.………………………………………8分(3)假设存在点H ,设11(,2,)22GH GE λλλλ==- ,则1111(,2,)2222BH BG GE λλλλ=+=--+ .由(2)知,平面SCD 的一个法向量为()1,1,2m =.则1sin cos ,62m BH π== ,即2(10)λ-=,所以1λ=.故存在满足题意的点H ,此时||2GH GE == (12)分。

安徽省2024届高三下学期春季阶段性检测地理试卷(含答案)

安徽省2024届高三下学期春季阶段性检测地理试卷(含答案)

安徽省2024届高三下学期春季阶段性检测地理试卷学校:___________姓名:___________班级:___________考号:___________一、单选题川藏铁路东起四川成都,西至西藏拉萨,其中,成都—雅安段、拉萨—林芝段现已通车,康定一林芝段预计2026年建成通车。

川藏铁路是我国第二条进藏铁路,也是西南地区的干线铁路之一,其开通有效提升了沿线区域的可达性,下图示意川藏铁路建成前后拉萨市的可达性变化,据此完成下面小题。

1.川藏铁路开通后,拉萨至我国中东部大部分地区可达性提升至24小时内,这主要是受其( )A.线路走向的影响B.列车数量的影响C.对接路网的影响D.运载能力的影响2.相比青藏铁路(西宁一拉萨),川藏铁路在带动西藏经济发展方面的主要优势有( )①途经省区更多②覆盖人口更多③经济腹地更广阔④沿线地质灾害更少A.②③B.①③C.②④D.①④新茶饮是指以原叶茶、水果、果汁和乳制品等为原料,现场制售的各类饮品的统称。

近年来,新茶饮行业快速发展,截至2020年底全国新茶饮门店数已达37.8万家,新茶饮成为餐饮业规模扩大和空间增长的重要引擎。

下表示意不同类型新茶饮品牌代表的发展历程,据此完成下面小题。

A.低端品牌、中端品牌、高端品牌B.低端品牌、高端品牌、中端品牌C.中端品牌、低端品牌、高端品牌D.中端品牌、高端品牌、低端品牌4.在初创期三类新茶饮品牌均在发源地所在省域发展,主要是为了( )A.享受地区优惠政策B.缩短原料运输距离C.解决本地就业问题D.积累资金,降低风险5.三类新茶饮品牌门店在我国东北地区分布均较少,主要原因是东北地区( )①距离原料地较远②高等级城市较少③交通可达性较差④消费淡季时间长A.①②B.③④C.①④D.②③多样的山地微气候、生物资源、地形地貌使得山东泰山植被垂直方向上呈现出明显的演替规律,以泰山南坡最为明显。

但目前泰山植被多为人工种植后经自然演替形成,其垂直分布现状与所在区域理想状态下的垂直带谱不符:落叶阔叶林主要分布在海拔550~1000米地区,温性针叶林主要分布在海拔1000米以上地区,针阔叶混交林在海拔200~1500米地区均有分布。

第一阶段综合检测卷(月考一)(单元测试)2024-2025学年青岛版(六三制)数学三年级上册

第一阶段综合检测卷(月考一)(单元测试)2024-2025学年青岛版(六三制)数学三年级上册

第一阶段综合检测卷(月考一)时间:60分钟满分:100分题号一二三四五六七总分等级得分一、在括号里填上合适的质量单位。

(10 分)二、小小填空,奥秘多。

(10分)1.计量小学生的体重时,常用( )作单位,用符号( )表示。

2.估算31×7的乘积时,可以把31看作( ),31×7就约等于( )。

3.在括号里填上适当的数。

4.要使□4×3的积是两位数,□中可填的数有( );要使□4×3的积是三位数,□中可填的数有( )。

5.如图,小丽从家到博物馆,一共有( )条不同的路线。

三、我是数学小法官。

(对的打“✔”,错的打“×”)(5分)1.一箱苹果重9克。

( )2.一头成年河马重 1千克。

( )3.张老师的身高是162千克,体重是 60厘米。

( )4.100克比1千克多99克。

( )5.要使1□×6的积是三位数,□里最小填7。

( )四、轻松选择。

(将正确答案的序号填在括号里)(12分)1.小丽的体重为28( )。

A.吨B.千克C.克2.1 吨600 千克比 2000 千克少( )。

A.120千克B.80千克C.400千克3.58×5 的积大约是( )。

A.300B.250C.3504.在计算 21×4 时,2×4=8表示 8个( )。

A. 一B.十C.百5.两位数乘一位数,积至少是( )。

A.两位数B.三位数C.一位数6.小丽有 2件上衣和3条裙子,一共有( )种不同的穿法。

A.5B.6C.7五、计算题。

(27 分)1.直接写得数。

(6分)13×3= 12×4= 24×2= 6×90=44×2= 21×3= 11×6= 45×2=597 克+205 克= 158克+166克=424 克+270克= 609吨+200吨=2.请你估一估。

陕西省咸阳市实验中学2024-2025学年七年级上学期阶段性检测数学试卷(一)(含答案)

陕西省咸阳市实验中学2024-2025学年七年级上学期阶段性检测数学试卷(一)(含答案)

试卷类型:A咸阳市实验中学2024~2025学年度第一学期阶段性检测(一)七年级数学注意事项:1.本试卷分为第一部分(选择题)和第二部分(非选择题)。

全卷共4页,总分120分。

考试时间120分钟。

2.领到试卷和答题卡后,请用0.5毫米黑色墨水签字笔,分别在试卷和答题卡上填写姓名、班级和准考证号,同时用铅笔在答题卡上填涂对应的试卷类型信息点(A 或B )。

3.请在答题卡上各题的指定区域内作答,否则作答无效。

4.作图时,先用铅笔作图,再用规定签字笔描黑。

5.考试结束,本试卷和答题卡一并交回。

第一部分(选择题 共24分)一、选择题(共8小题,每小题3分,计24分.每小题只有一个选项是符合题意的)1.在数轴上表示的点与原点的距离为( )A.2B. C. D.02.下列各组数中,互为相反数的一组是( )A.5和 B.2和C.和D.和3.计算的结果是( )A.1B. C.5 D.4.有三个正方体木块,每一块的各面都写上不同的数字,三块的写法完全相同,现把它们摆放成如图所示的位置,请你判断数字4对面的数字是()A.6B.3C.2D.15.有理数,在数轴上的对应点的位置如图所示,则下列各式成立的是()A. B. C. D.6.下列各式计算正确的是( )A. B. C. D.7.将若干个相同的小正方体堆成如图所示的图形,若每个小正方体的棱长为,则这个图形的表面积为()2B 2-2-2±5-123-13-3-13()()32---1-5-a b 1a >-a b>-1b -<a b<33--=()33-+=33-=-()33--=aA. B. C. D.8.如图,数轴上、两点分别对应实数、,则下列结论正确的是()A.B. C. D.第二部分(非选择题 共96分)二、填空题(共5小题,每小题3分,计15分)9.比较大小:______.(填“>”,“<”,“=”号)10.若比平均分高5分记作+5分,那么分表示______.11.在图中剪去1个小正方形,使得到的图形经过折叠能够围成一个正方体,则要剪去的正方形对应的数字是______.12.如图是某几何体从不同方向看所得图形,根据图中数据,求得该几何体的侧面积为______.(结果保留)13.,是绝对值最小的数,是最大的负整数,则______.三、解答题(共13小题,计81分.解答应写出过程)14.(5分)请把下列各数填入相应的集合中:,,5.2,0,,,,2024,,整数集合:{ …};负分数集合:{ …}.15.(10分)计算下列各题:(1);(2);230a 240a 250a 260a A B a b 0a b +>0a b +<0a b ->0a b ->34-45-2-π5a =b c a b c +-=2-12-2311653-0.3-()3--()()1111---()()3227-++(3);(4).16.(5分)一个几何体是由大小相同的小立方块搭成,其中小正方形上的数字表示在该位置上的小立方块的个数,请画出从正面和从左面看到的这个几何体的形状图.17.(5分)若,求的值.18.(5分)如图,用经过、、三点的平面截去正方体的一角,变成一个新的多面体,若这个多面体的面数为,棱数为,求的值.19.(6分)若,互为相反数,,,互为倒数,求的值.20.(6分)请画出数轴,并在数轴上标出下列各数:0.5,,,,.并把它们用“>”连接起来.21.(6分)下表列出了国外几个城市与北京的时差.城市纽约巴黎东京芝加哥时差/h(1)如果现在北京的时间是17:00,那么现在的东京时间是几点?(2)小荣想在北京时间9:00给在巴黎的姑妈打电话,你认为合适吗?请说明理由;(3)王老师从北京乘坐早晨7:00的航班经过约到达纽约,那么王老师到达纽约时当地时间大约是几点?22.(6分)如图是一张铁片.(单位:米)(1)计算这张铁片的面积;(2)这张铁片能否做成一个无盖长方体盒子?若能,请计算它的体积;若不能,请说明理由.23.(6分)设表示取的整数部分,例如:,.()()()733510+-++-+-()()67128510⎛⎫---+-- ⎪⎝⎭202320240x y -++=x y +A B C m n m n +a b 5x =c d ()a b cd x --+-4-1132.5- 1.5-–137-1+–1420h []a a []2.32=[]55=(1)求的值;(2)令,求.24.(6分)近几年,全球的新能源汽车发展迅猛,尤其对于我国来说,新能源汽车产销量都大幅度增加.小明家新换了一辆新能源纯电汽车,他连续7天记录了每天行驶的路程(如表).以为标准,多于的记为“+”,不足的记为“”,刚好的记为“0”.第一天第二天第三天第四天第五天第六天第七天路程+8+2+15(1)请求出小明家的新能源汽车这7天一共行驶了多少千米?(2)已知汽油车每行驶需用汽油5.5升,汽油价为8.2元/升,而新能源汽车每行驶耗电量为15度,每度电为0.56元,小明家换成新能源汽车后这7天的行驶费用比原来节省多少钱?25.(7分)有理数,,在数轴上的位置如图所示,且表示数的点、数的点与原点的距离相等.(1)用“>”,“<”或“=”填空:______0,______0,______0;(2)求的值.26.(8分)如图1,、两点在数轴上对应的数分别为和6.(1)直接写出、两点之间的距离______;(2)若在数轴上存在一点,使得到的距离是到的距离的3倍,求点表示的数;(3)如图2,现有动点、,若点从点出发,以每秒4个单位长度的速度沿数轴向右运动,同时点从点出发,以每秒2个单位长度的速度沿数轴向左运动,当点到达原点后立即以每秒3个单位长度的速度沿数轴向右运动,求:当到的距离是到的距离的4倍时的运动时间的值.图1图2咸阳市实验中学2024-2025学年第一学期阶段性检测(一)答案一、选择题(每小题3分,共24分)题号12345678答案AABBCDDC[][]12 3.675⎡⎤--+⎢⎥⎣⎦{}[]a a a =-[]312 2.4644⎧⎫⎧⎫-+⎨⎬⎨⎬⎩⎭⎩⎭40km 40km 40km -40km ()km 6-5-–511+100km 100km a b c a b a b +a c -b c -11b a -+-A B 16-A B P P B A P P Q P A Q B Q O P O Q O t二、填空题(每小题3分,共15分)9.10.比平均分低2分11.212.13.6或三、解答题(共81分)14.(5分)整数集合:负分数集合:15.(10分)(1,2小题各2分;3,4两小题各3分)(1)0;(2);(3);(4)16、(5分)(从正面看为3分,从左面看为2分)解:如图所示:17、(5分)【详解】解:由题意,得:,,,..18、(5分)【详解】解:由图可知,这个多面体的面数是7,即.又因为正方体有12条棱,被截去了3条棱,截面为三角形,所以增加了3条棱,故棱数不变,即.所以.19、(6分)或6解:由题知:,①当时原式>2π4-(){}2,0,3,2017---⋅⋅⋅15,,0.323⎧⎫---⋅⋅⋅⎨⎬⎩⎭5-4-1192-1-20230x -=20240y +=2023x ∴=2024y =-202320241x y ∴+=-=-19m n +=7m =12n =71219m n +=+=4-0a b +=5x =±1cd =5x =∴a b cd x=++-015=+-4=-②当时原式的值为或620、(6分)【详解】解:如图21、(6分)解:(1)现在的东京是18点(2)不合适,理由如下:当北京市9点时,巴黎是凌晨2点,姑妈正在休息,所以不合适。

七年级数学上册阶段检测题(含答案)

七年级数学上册阶段检测题(含答案)

期中检测题【本试卷满分120分,测试时间120分钟】一、选择题(每小题3分,共30分)1.用一个平面去截一个几何体,得到的截面是四边形,这个几何体可能是( ) A.圆锥B.圆柱C.球体D.以上都有可能2.的倒数是( )A.3B.31C.-3D.-31 3. 如图所示的立体图形从上面看到的图形是( )4.如图是一个正方体盒的展开图,若在其中的三个正方形A ,B ,C 内分别填入适当的数,使得它们折成正方体后相对的面上的两个数互为相反数,则填入正方形A ,B ,C 内的三个数依次为( )A.1,-2,0B.0,-2,1C.-2,0,1D.-2,1,0 5.数a 的2倍与3的和,可列代数式为( ) A.2(a +3) B.2a +3C.3a +2D.3(a +2)6 .(2013·河北中考)若x =1,则|x -4| =( )A.3 B.-3 C.5 D.-57.某运动员在东西走向的公路上练习跑步,跑步情况记录如下:(记向东为正,单位:米) 1 000,-1 200,1 100,-800,1 400,该运动员共跑的路程为( ) A.1 500米 B.5 500米 C.4 500米 D.3 700米 8.绝对值大于2且小于5的所有整数的和是( ) A.7 B.-7C.0D.59.下列各组的两个数中,运算后的结果相等的是( ) A.32和23 B.33-和3(3)- C.22-和2(2)- D.和323-第3题图第4题图10.一列火车长m 米,以每秒n 米的速度通过一个长为p 米的桥洞,用代数式表示它通过桥洞所需的时间为( ) A.np秒 B.n m p -秒C.nmnp +秒 D.nmp +秒二、填空题(每小题3分,共24分)11.523y x -的系数是____________.12.实数a ,b 在数轴上的位置如图所示, 则+a 的化简结果为 .13.上升了-5米,实际上是 了 米;如果比海平面低100米记作-100米,那么+3 800米表示 .14.某日傍晚,黄山的气温由上午的零上2 ℃下降了7 ℃,这天傍晚黄山的气温是___________℃.15.若要使图中平面展开图折叠成正方体后,相对面上两个数之和为6,____,______.16.将一张0.1毫米厚的白纸对折10次后,其厚度为 毫米.(只要求列算式) 17.请你将32 ,,0,12-,110-这五个数按从大到小排列:_____________________. 18.一桶油连桶的质量为千克,其中桶的质量为千克,如果把油平均分成3份,则每份的质量是____________. 三、解答题(共66分) 19.(8分)计算:(1)23-17-(-7)+(-16); (2)31)2(65⨯-÷+-;1 2 3第15题图 第12题图(3);(4).20.(5分)先化简,再求值:,其中,.21.(6分)将下列几何体与它的名称连接起来.第21题图22.(7分)如图是一组数值转换机,写出图(1)的输出结果,并找出图(2)的转换步骤(填写在框内).第22题图23.(10分)10袋小麦以每袋150千克为准,超过的千克数记为正数,不足的千克数记为负数,分别记为:,与标准质量相比较,这10袋小麦总计超过或不足多少千克?10袋小麦总质量是多少千克?每袋小麦的平均质量是多少千克?24.(10分)某地电话拨号入网有两种收费方式,用户可以任选其一:(Ⅰ)计时制:0.05元/分;(Ⅱ)包月制:50元/月(限一部个人住宅电话上网).此外,每一种上网方式都需要加收通信费0.02元/分.(1)某用户某月上网的时间为小时,请你分别写出两种收费方式下该用户应该支付的费用;(2)若某用户估计一个月内上网的时间为20小时,你认为采用哪种方式较为合算?25.(10分)一杯饮料,第一次倒去一半,第二次倒去剩下的一半……如此倒下去,第五次后剩下饮料是原来的几分之几?第次后呢?26.(10分)下列是小朋友用火柴棒拼出的一列图形:第26题图仔细观察,找出规律,解答下列各题:(1)第四个图中共有________根火柴棒,第六个图中共有_________根火柴棒;(2)按照这样的规律,第个图形中共有_________根火柴棒(用含的代数式表示);(3)按照这样的规律,第2 012个图形中共有多少根火柴棒?参考答案1.B 解析:用一个平面去截一个圆锥,得到的图形不可能是四边形,故A 不满足要求; 用一个平面去截一个圆柱,得到的图形可能是圆、椭圆、四边形,故B 满足要求; 用一个平面去截一个球体,得到的图形只能是圆,故C 不满足要求.故选B.2.A 解析:因为,故其倒数是3.3.C 解析:从上面看为C 选项所示的图形.4.A 解析:由图可知A 对应-1,B 对应2,C 对应0. ∵ -1的相反数为1,2的相反数为-2,0的相反数为0, ∴ A =1,B =-2,C =0.故选A .5.B6.A 解析:当x =1时,|x -4| =|1-4| =|-3|=3.7.B 解析:各个数的绝对值的和为:1 000+1 200+1 100+800+1 400=5 500(米), 则该运动员共跑的路程为5 500米.8.C 解析:绝对值大于2且小于5的所有整数是±3,±4,其和为0. 9.B 解析:A.,,故本选项错误; B.,,故本选项正确; C.,,故本选项错误;D.,,故本选项错误.故选B.10.D 解析:这列火车通过的实际距离为(p+m )米. 11.5212. -b 解析:由数轴知,a >0,b <0,|a |<|b |,则a +b <0,∴+a =-(a +b )+a =-a -b +a =-b .13.下降,5;比海平面高3 800米14.-5 解析:由题意得,这天傍晚黄山的气温为2-7=-5(℃).15. 5 3 解析:自己动手折一下,可知与1相对,与3相对,所以所以16. 0.1×解析:∵一张纸的厚度大约是0.1毫米,∴对折一次的厚度是0.1×毫米,对折两次的厚度是0.1×毫米,…,∴对折10次的厚度为0.1×(毫米).17. 32>12->0>110->18.3ba-解析:由题意得,油的总质量为千克,则每份油的质量为3ba-千克.19.解:(1)原式=23-17+7-16=6+7-16=-3.(2)原式=.(3)原式=.(4)原式.20.解:.将,代入得原式.21.解:第21题图22.解:(1)由图中程序可知方框中填,输出为;(2)结合图(1)的规律,可知第一个运算为+3,第一次输出为,第二次运算为÷2.23.分析:将10个数相加,若和为正,则为超过的千克数,若和为负,则为不足的千克数;若将这个数加1 500,则为这10袋小麦的总千克数;再将10袋小麦的总千克数除以10,就为每袋小麦的平均质量. 解:∵∴ 与标准质量相比较,这10袋小麦总计少了2 kg. 10袋小麦的总质量是1 500-2=1 498(kg ). 每袋小麦的平均质量是24.解:(1)采用计时制应付的费用为:(元); 采用包月制应付的费用为:(元).(2)若一个月内上网的时间为20小时,则计时制应付的费用为84元,包月制应付的费用为74元,很明显,包月制较为合算. 25.解:设这杯饮料为1,根据题意得 第一次后剩下饮料是原来的:1-21=21, 第二次后剩下饮料是原来的:,第三次后剩下饮料是原来的:,…,第五次后剩下饮料是原来的:,第次后剩下饮料是原来的:.26.解:根据图案可知,(1)第四个图案中火柴棒有:3×4+1=13(根); 第六个图案中火柴棒有:3×6+1=19(根). (2)当 时,火柴棒的根数是3×1+1=4; 当 时,火柴棒的根数是3×2+1=7; 当时,火柴棒的根数是3×3+1=10;所以第个图形中共有火柴棒()根.(3)当时,.故第2 012个图形中共有6 037根火柴棒.。

2022年春学期阶段检测七年级语文试卷

2022年春学期阶段检测七年级语文试卷

2022年春学期阶段检测七年级语文试卷一.积累与运用(32分)1.默写。

(10分)(1)亡羊补牢,▲。

(2)▲,患不知人也。

(3)躬行君子,▲。

(4)▲,何人不起故园情?(李白《春夜洛城闻笛》)(5)落红不是无情物,▲。

(龚自珍《己亥杂诗》)(6)▲ ,贾生才调更无伦。

(李商隐《贾生》)(7)政入万山围子里,▲。

(杨万里《过松源晨炊漆公店》)(8)予独爱莲之出淤泥而不染,▲。

(周敦颐《爱莲说》)(9)杜牧《泊秦淮》中借商女讽刺那些醉生梦死的官僚的诗句是:“▲,▲。

”2.阅读下面的文字,根据拼音写出相应的汉字。

(4分)读彭荆风的《驿路梨花》,我们知道小茅屋每年都被修qì▲;读贾平凹的《一棵小桃树》,我们了解到作者jīn ▲持的态度;读茨威格的《伟大的悲剧》,我们感悟到斯科特海军上校在荒漠上,只有心中的海市shèn ▲楼精神;读杨振宁的《邓稼先》,我们感受到邓稼先鞠躬尽cuì▲为国献身的情怀。

▲▲▲▲3.下列句子中成语使用正确的一项是(▲)(2分)A.在演讲比赛中,有一位选手引经据典....,口若悬河,给观众留下了深刻的印象。

B.飞往留学地的飞机即将起飞,弥留之际....,这位性格内向的男生终于喊出了“妈妈,我爱你!”C.我花了大半天工夫才给妈妈做好这几道菜,谁知道吃起来让人觉得味同嚼蜡....。

D. 教育部及各级学校立下海誓山盟....,严打网络乱象,还少年一个清朗网络空间。

4.下列说法有误的一项是( ▲)(2分)A.“铭”是古代向帝王上书陈情言事的一种文体,一般是用韵的。

B.杜甫,字子美,是我国伟大的现实主义诗人,有“诗圣”之称。

C.《木兰诗》选自宋代郭茂倩编的《乐府诗集》,它是南北朝时北方的一首乐府民歌。

D.《未选择的路》其实也是写“选择”,因为未选择也是一种选择。

5.下列短语不完全同类的一项(▲)(2分)A.雄伟壮丽改革开放土地和杂草表扬与鼓励B.一泓泉水外国朋友完全相信第一场秋雨C.太阳升老师讲课大家唱歌小明进门D.喷出火焰看到长城热爱祖国祖国繁荣6.名著阅读。

上海市育才中学2023-2024学年高三上学期10月第一次阶段检测英语试卷

上海市育才中学2023-2024学年高三上学期10月第一次阶段检测英语试卷

上海市育才中学2021级高三第一学期10月练习考试时间120分钟,满分140分I.Listening Comprehension25分Section A10分Directions:In Section A,you will hear ten short conversations between two speakers.At the end of each conversation,a question will be asked about what was said.The conversations and the questions will be spoken only once.After you hear a conversation and the question about it,read the four possible answers on your paper,and decide which one is the best answer to the question you have heard.1. A.To a bank. B.To a travel agency.C.To a drugstore.D.To Spain.2. A.He forgot to submit his paper. B.He misremembered the deadline.C.He didn't finish his paper on time.D.He couldn't focus his mind on the paper.3. A.She is a movie enthusiast. B.She prefers thrillers to romances.C.She doesn't like thrillers.D.She is not in the mood for any movie.4. A.Because she is not good at calculating.B.Because she hurried to finish the report.C.Because she is quite a careless person.D.Because she cited unconfirmed figures.5. A.Lily forgot to deliver discs to the man.B.The man failed to renew the address.C.Lily planned to visit the new dormitory.D.The discs might have been mailed to the former place.6. A.The woman doesnt enjoy the leftovers.B.The man is an excellent cook in the army.C.The man has invited many people for lunch.D.The man intentionally prepared much food.7. A.The man should be more diligent.B.Cramming is effective for an exam.C.Biology is indeed difficult to learn.D.The man shouldn’t have stayed up that late.8. A.Arrange to apply for another room.B.Make a complaint about her roommate.C.Ask her roommate to move out of the room.D.Change rooms with someone in the housing office.9. A.Helen’s hard work is rewarding.B.Helen is an accomplished job hunter.C.Helen always complains about her job.D.Helen is viewed as a model by the speakers.10. A.Every student should value Chinese culture.B.Chinese students are humble and reserved.C.He is deeply impressed by Chinese culture.D..Chinese students lack the courage to share ideas.Section B15分Directions:In Section B,you will hear two short passages and one longer conversation,and you will be asked three questions on each of the passages and the conversations.The passages and the conversations will be read twice,but the questions will be spoken only once.When you hear a question,read the four possible answers on your paper and decide which one would be the best answer to the question you have heard.Questions11through13are based on the following passage.11. A.To relocate to safer grounds. B.To migrate with the seasons.C.To seek more hunting grounds.D.To gather more food for survival.12. A.It once belonged to the North sea. B.It was drowned by the melt water.C.It was an island abundant in wildlife.D.It was unveiled by the modern fishermen.13. A.Polar ice caps will continue to melt at a rapid rate.B.The sea floor witnessed the rise and fall of the Europe.C.Doggerland is the birthplace of English civilization.D.Coastal residents are vulnerable to the climate change.Questions14through16are based on the following passage.14. A.Scientists in Britain are going to collect rocks on Mars.B.The discovery of Boron is a milestone in Mars exploration.C.Evidence indicates there exist plants and animals on Mars.D.The microscope is mainly used to identify different rocks.15. A.Basic molecules for life. B.More essential chemicals.C.Holes caused by microbes.D.Ancient material from Mars.16. A.The development of life on Mars. B.The search for signs of life on Mars.C.The importance of research on rocks.D.The discovery of surface water on Mars. Questions17through20are based on the following conversation.17. A.To practise skateboarding. B.To encourage teenagers in trouble.C.To support a non-profit organization.D.To fulfil his dream of touring Europe.18. A.They served as tour guides for Joe. B.They kept a record of Joe’s journey.C.They transported equipment for Joe.D.They took care of Joe’s accommodation.19. A.He covered a rather long distance. B.He tried to follow his friends’van.C.He fell down and broke the trainers.D.He climbed over the rugged mountains.20. A.Prepare for another trip. B.Resign from his current job.C.Write a book about his journey.D.Renew a contract with the organization.II.Grammar and Vocabulary20分Section A GrammarDirections:After reading the passage below,fill in the blanks to make the passage coherent and grammatically correct.For the blanks with a given word,fill in each blank with the proper form of the given word;for the other blanks,use one word that best fits each blank.10分Do you know someone who is exceptionally picky when it comes to the food to eat,the clothes to wear,or the people to date?Choosy people tend to be somewhat overly analytical-they carefully weigh the pros and cons of most decisions.As a result,they tend to take a lot of time (21)________(make)up their minds.Remember Jerry from Seinfeld?He was extremely picky regarding the people he dated.Any physical flaw,(22)________small,was Jerry's reason for rejecting a possible dating partner.I hada friend who was like that.He didn't like the shape of this girl's chin,or another(23)_______ears were“too large for her face.”As a result,he rarely dated anyone.A waitress told me a story of a particular picky woman.The restaurant had a special salad(24)________tons of ingredients.This woman would go down the list of ingredients and say,“I don't like cucumbers,take that out...take out the cilantro,no tomatoes,etc.”The waitress said that by the time she was done,it was(25)________salad of just iceberg lettuce!People who are not picky-the opposite end of the scale-tend to be(26)________(impulsive),flexible,and open to experience.Our research found that some people are only picky in particular areas of their lives-eating, dating,or when(27)________(evaluate)goods for purchase,although most were picky in most things.Picky people tend to analyze,and often overanalyze,the choices that they are about to make.Some of them can drive salespersons crazy as they hesitate,evaluate.and hesitate again.A contractor(承包商),who(28)________(remodel)a couple of houses,told me the story of two extreme clients.The first,who was extremely choosy,took forever to decideon bathroom fixtures,appliances,cabinets,and paint.(29)________________the non-picky one,looked at three similar colors and said,“They're all ok,you choose.”While choosy individuals(30)________spend long time deciding,being analytical and slowing to act,non-choosy people's impulsiveness may lead to quick,and unwise decisions. However,the truth is that non-choosy people may also make their quick decisions,and rationalize them to make them fit,even if it wasn't the best decision in the first place.Section B VocabularyDirections:Complete the following passage by using the words in the box.Each word can only be used once.Note that there is one word more than you need.10分A.claimedB.evacuateC.fabricsD.regularE.significantlyF.sinkG.rainstorms H.similar I.initially J.swallowing K.thought“It was a wave of water,”says Oulimata Sambe.She points out the still-sodden(湿透的) armchairs,muddy wardrobe and the water stain a metre and a half up the wall in her small house in Ngor,a fishing village within Dakar,the capital of Senegal.“I had two grandkids on my bed,I had to(31)______them out of the window,”she adds.Not faraway,underpasses on Dakar's scenic corniche(滨海路)became car-(32)______lakes.Just weeks earlier another downpour had turned quiet streets in Dakar into raging rivers and collapsed a section of motorway.(33)______events regularly occur across the region.Recent flooding and landslides also killed eight people in Freetown,the capital of Sierra Leone.In June flooding killed12people in Abidjan,the commercial capital of Ivory Coast.Floods in Lagos,Nigeria’s commercial capital, (34)______another seven lives.Even when they are not deadly,city floods ruin lives and livelihoods.Storm water recently flooded the biggest textile(纺织业)market in Kano,a city in northern Nigeria,destroying hundreds of thousands of dollars’worth of(35)______.Unusually heavy rains have become(36)______more common over the past30years, leaving huge numbers of people at risk.In places this is partly because of deforestation.A recent study by Christopher Taylor of the UK Centre for Ecology and Hydrology,a research institute,and his coauthors found that afternoon(37)______in deforested parts of coastal west Africa happen twice as often compared with30years ago.Their frequency went up by only about a third in places that kept their forests.Yet(38)______flooding of cities in west Africa is not only caused by heavier rain.Unplanned urbanization is also to blame.As cities have grown,builders have thrown up concrete walls with little(39)______about providing drainage,making it harder for water to find a clear path to the sea.As ever larger areas have been paved over,there has been less exposed soil into which water can gently(40)______away.And as cites get more packed with new arrivals,their few functioning drains get overwhelmed or clogged.III.Reading Comprehension45分Section ADirections:For each blank in the following passage there are four words or phrases marked A,B C and D.Fill in each blank with the word or phrase that best fits the context.15分When Harry told me that he was leaving the company,one of the first things he said to me was that he didn’t like emotional goodbyes.I have decided to take him at his word.Everything you will hear me say tonight is straightforward and___41___,just like the man himself.Harry has been in the finance departent for seven years.In that time,he has not done anything remotely___42___.I asked several people if they had anecdotes(轶事)about him,and the best they could come up with is that he once accidentally changed a formula in the annual budget spreadsheet.Since the___43___was quickly spotted and fixed,it had no impact at all.Will Harry be___44___?Not at all,though for reasons that he may not fully grasp.This is an evening in which the person who is leaving receives presents(as well as a card from people whose names you don't recognize but who just loved working with you).But the___45___goes both ways.The leavers have a parting gift of their own to present:a convenient scapegoat(替罪羊).When someone dies,the convention is not to speak ill of the departed.When an employee ___46___a company,it's the opposite.Things that don't work as well as they should can be laid at the door of someone who won't___47___.Frustrations that have been suppressed can finally be blamed on someone.When we speak of you,we will say things like“Harry had many strengths but...",and we will___48___ourselves that you held us back a bit.This will not be true,but it will be___49___.I'd like to take this opportunity to tell you that we are grateful for this___50___ act of service,which can last for as long as a year after someone has actually left the building. After that,memories tend to fade.I wish I could promise you that you are part of company folklore,or that your role in banning plastic straws from the office will ring through the ages. ___51___,the only guarantee I can give is that no one here will ever read your exit-interview notes.This may all seem a little___52___.You have spent many years at the company,and yet will probably___53___.But in spite of that,you should still feel___54___in your time here.To have done your work well and to leave at a time of your choosing are achievements that are beyond most people.So please raise your glasses to Harry.He has been an excellent colleague and won't really be___55___.41.A.off the guard B.to the point C.in the swing D.on the horizon42.A.funny B.impressive C.correct D.creative43.A.breakdown B.discovery C.mistake D.crack44.A.hated B.remembered C.adored D.forgotten45.A.impact B.exchange C.ceremony D.end46.A.joins B.founds C.reforms D.exitse up B.answer back C.leave off D.back away48.A.persuade rm C.remind D.caution49.A.pointless B.consequential C.significant D.convenient50.A.selfless B.grand C.final D.accidental51.A.Instead B.Otherwise C.Besides D.Therefore52.A.weird B.amusing C.exciting D.sad53.A.make no difference B.leave little traceC.have some sayD.produce much impact54.A.regret B.guilt C.pride D.pain55.A.missed B.replaced C.erased D.blamedSection BDirections:Read the following three passages.Each passage is followed by several questions or unfinjshed statements.For each of them there are four choices marked A,B,C and D.Choose the one that fits best according to the information given in the passage you have just read.22分AWorth nearly$ltrn,Facebook is the world’s sixth-most-valuable company.Its revenues have grown by56%in the past year,and its share price by more than a quarter.Nearly3bn people use its products every month.Why did such a successful company change its name as Meta?The likely official reason for the rebranding is that the firm has outgrown the social network that Mark Zuckerberg started17years ago in a Harvard dorm.Today it includes other social apps (Instagram,WhatsApp,Messenger)and video hardware(Oculus,Portal).It has launched a digital wallet(Novi)and may yet offer a currency(Diem).Mr Zuckerberg expects people eventually to associate his firm more with the“metaverse”(元字宙),a virtual space for work play and more, than with social media.Facebook wouldn't be the first tech giant to do so.In2015Google set up Alphabet,a holding company for the search engine and its many side projects.Under this model,Facebook would become just another app within a wider family,though by far it has been the biggest earner.There is another possible motive for a makeover.For all its financial success,the Facebook brand has become tarnished.The social network is blamed for fueling everything from teenage anorexia(厌食症)to uprising at the US Capitol.Public trust in it is lower than in most tech giants, and falling.Although two years ago the firm started branding its apps as being“from Facebook”, its new smart glasses,which can record video and take phone calls,feature only the logo of its partner,Ray-Ban.A former employee revealed that Facebook was trying to cover up a drop in young American users.Mr Zuckerberg himself has been a reason for much of the criticism of Facebook,and of bossy tech firms more generally.As the all-powerful founder,he has a higher profile than his opposite numbers at TikTok,YouTube and other social networks.Normally,a brand facing a reputational crisis might dump its unpopular CEO.But Mr Zuckerberg’s position is immovable, which may explain why he would want to dump the brand instead.56.Facebook changed its name because________.A.it wanted people to associate its name with universeB.it was trying to follow the fashion led by GoogleC.it expected to expand its business to a wider rangeD.its former name has brought bad reputation to the company57.What can we know about Facebook?A.It was founded by Zuckerberg in Harvard's dormitory.B.It has a positive influence on teenagers’mind and actions.C.It is as popular among young people in the US as it was.D.It produced smart glasses with two companies’logos on it.58.What does the underlined word“tarnished”mean in the passage?A.distinguishedB.abandonedC.globalizedD.spoiled59.This passage probably appears in________.A.a science reviewB.a business magazineC.a technical reportD.the website of FacebookBThe Pros and Cons of Napping●Daytime resting:helpful or harmful?Getting some sleep,even a short afternoon nap,may seem like a good thing for people with sleep disorders.But for those with insomnia and an already decreased desire to sleep at night, midday shut-eye can actually be counterproductive.So before you curl up on the couch this afternoon,consider whether your quick fix might backfire when you lie down in bed tonight.●Trouble sleeping at nightIf you have insomnia,naps present a problem,even if you feel tired during the day.Napping during the day can perpetuate bad sleep habits for people with temporary sleep issues caused by stress,illness,or jet lag too.“Even just a little bit of a power nap reduces your night time sleep drive,”says Ralph Downey III,PhD,director of the Sleep Disorders Center at Loma Linda University Medical Center in Califoria.“The nap becomes nothing more than another episode of fragmented sleep.”●Getting through the dayIf you don't have a problem getting your z’s at night,a quick nap can work wonders to pull you through a tiresome or sleep-deprived day.In fact,a2008study found that a45-minute daytime nap can improve memory function.And previous studies have found that naps can lower blood pressure.Those who suffer from narcolepsy or shift-work syndrome may also benefit from daytime naps,says James Wyatt,PhD,director of the Sleep Disorders Service and Research Center at Rush University Medical Center in Chicago.●Fatigue could be a warning signIf you're constantly fighting the urge to sleep during the day and falling asleep instantly at night,you might have obstructive sleep apnea,a condition in which you stop breathing while you sleep.In this case,naps won't help.By wearing a continuous positive airway pressure(CPAP) machine that flows oxygen through your nose,however,you'll likely sleep more soundly and wake refreshed whether from a good night's rest or a quick catnap.60.If you suffer from insomnia________.A.midday shut-eye may be helpfulB.a short afternoon nap is probably a good thingC.napping during the day is considered a good habitD.a little bit of a power nap decreases your night time sleep desire61.A quick nap can be beneficial for common people except those________.A.who have a problem falling into sleep at nightB.whose memory is not good enoughC.who suffer from shift-work syndromeD.whose blood pressure is too high62.It can be inferred from the passage that________.A.naps are helpful for those who have obstructive sleep apneaB.more oxygen through your nose might improve sleep qualityC.a45-minute daytime nap can be beneficial for those with insomniaD.a quick nap can pull everyone through a sleep-deprived dayCDelivering life-saving drugs directly to the brain in a safe and effective way is a challenge for medical providers.One key reason:the blood-brain barrier,which protects the brain from tissue-specific drug delivery.Methods such as an injection or a pill aren't as precise or immediate as doctors might prefer,and ensuring delivery right to the brain often requires invasive risky techniques.A team of engineers from Washington University in St.Louis has developed a new nanoparticle generation-delivery method that could someday vastly improve drug delivery to the brain,making it as simple as a sniff.“This would be a nanoparticle nasal spray,and the delivery system could allow medicine to reach the brain within30minutes to one hour,”said Ramesh Raliya,research scientist at the School of Engineering&Applied Science.“The blood-brain barrier protects the brain from foreign substances in the blood that may injure the brain,”Raliya said.“But when we need to deliver something there,getting through that barrier is difficult and invasive.Our non-invasive technique can delivel drugs via nanoparticles so there’s less risk and better response times.”The novel appronch is based on aerosol(气落胶)science and enginecring principles that allow the gencation of monodisperse nanoparticles,which can deposit on upper regions of the nasal cavity via spread.The nanoparticles were tagged with markers,allowing the researchers to track their movement.Next,researchers exposed locusts’antenna(触角)to the aerosol,and observed the nanoparticles travel from the antennas up through the olfactory nerve,which is used to sense the smell.Due to their tiny size,the nanoparticles passed through the brain-blood barrier,reaching the brain and spreading all over it in a matter of minutes.The team tested the concept in locusts because the blood-brain barriers in the insects and humans have similarities.“The shortest and possibly the easiest path to the brain is through your nose,”said Barani Raman,associate professor of biomedical engineering.“Your nose,the olfactory bulb and then olfactory cortex:two steps and you’ve reached the cortex.”To determine whether or not the foreign nanoparticles disrupted normal brain function,Saha examined the physiological response of olfactory neurons in the locusts before and after the nanoparticle delivery and found no noticeable change in the electrophysiological responses was detected.“This is only a beginning of a set of studies that can be performed to make nanoparticle-based drug delivery approaches more principled”Raman said.The next phase of research involves fusing the gold nanoparticles with various medicines,and using ultrasound to taarget a more precise dose to specific areas of the brain,which would be especially beneficial inbrain-tumor cases.63.This passage is mainly about________.A.a novel method of drug deliveryB.a challenge facing medical staffC.a new medicine treating brain diseasesD.a technique to improve doctors’ability64.According to the passage,which of the following statements is TRUE?A.Doctors prefer using methods like an injection to treat diseases.B.Locusts were taggged with markers to track their movement.C.The blood-brain barrier lowers the effectiveness of a pill.D.The medicine could reach the brain within half an hour.65.The researchers focused their study on locusts because________.A.human and locusts have similar structures that protect brain from foreign substances.B.the delivery process consists of the olfactory bulb and the olfactory cortexC.locusts have changeable electrophysiological responses to nanoparticlesD.The shortest and possibly the safest path to the brain is through human’s noses66.________would most be interested in reading this passage.A.A lung cancer patient who needs operation immediatelyB.A college student who majors in medical technologyC.A senior doctor who is about to retireD.A high school teacher who is teaching biologySection CDirections:Read the following passage.Fill in each blank with a proper sentence given in the box. Each sentence can be used only once.Note that there are two more sentences than you need.8分A.If this is a battle,signs indicate that the pro-phone crowd has already won.B.But rather than expressing firustration about this awkwardness,she said she felt guilty,as if she were the one challenging convention.C.In recent years,the de Young received more than a thousand complaints from people who felt that cell phones had spoiled their experience of the exhibit.D.The cause of this recent craze was Bouquets to Art,one of the most popular annual events at the de Young Museum in San Francisco.E.The truth is people like selfies more than the exhibits way beyond researchers’imagination.F.But the issue is complicated for the professionals running museums.A San Francisco Museum Tackles Art’s Instagram DilemmaA woman held tightly her phone to her heart,the way a missionary might hold a Bible.She was anxious to take a picture of a stunning bouquet of flowers,but first she had toget through a crowd of others who were doing the same.(67)___________For the34th year,florists were asked to create bouquets that respond to pieces of art on display,from ancient carvings to contemporary sculptures.A tower of baby’s breath imitates a waterfall in a nearby painting by Gustav Grunewald.Red flamingo flowers and neon blue sticks echo a surreal portrait of a woman by Salvador Dali.It's amazing and also extremely Instagrammable,to the point that it has become a problem.(68)__________Institutions of fine art around the world face similar problems as the desire to take photographs becomes a huge draw for museums as well as something that upsets some of their sponsors.So the de Young responded with a kind of agreement:carving out“photo free”hours duringthe exhibition’s six-day run.One common complaint in the ongoing debates over the effect of social media on museum culture is that people seem to be missing out on experiences because they are so busy collecting evidence of them.A study published in the journal Psychological Science suggests there is truth to this.It found that people who took photos of an exhibit rather than simply observing it had a harder time remembering what they saw.(69)__________Linda Butler,the de Young’s head of marketing,communications and visitor experience,acknowledges that not everyone wants amuseum to be“a selfie playland”.Yet a lot of other people do,and her take is that the de Young is in no position to claim that one motivation for buying a$28ticket is more valid than another.If we removed social media and photography,she says,“we should risk becoming irrelevant”.(70)__________On this visit to the museum,most people seemed to treat the photo craze as the new normal.Many politely waited their turn and got out of other people's shots even as visitors bumped into each other in crowded galleries.IV.Summary Writing:10分Directions:Read the following passage.Summarize the main idea and the main points)of the passage in no more e your own words as far as possible.71.It is a common sight on campus or in the streets:a young person rides by on an electric scooter,traveling quickly and proudly.But Beijing's traffic authorities have said that starting on Sept.5,people who are caught riding electric scooters on public roads or bicycle lanes will be fined10yuan.They will also be given a warning not to use the vehicles on public roads again.The announcement was made after traffic police in Shanghai started a campaign to get electric scooters off public roads,with police officers stopping riders because the scooters could cause traffic problems.The Beijing Consumer Association said it had tested more than20electric scooters of different brands recently and found that most had substandard brakes.It added that16 of the tested scooters could go faster than the maximum20km per hour set for electric bikes. According to the traffic police,people who ride electric scooters at certain speeds can easily bump into the vehicles in the vehicle lane and hurt people who walk in the bicycle lanes.But seeing the benefits that electric scooters have brought to young people,experts are worried that the ban may take effect slowly.Electric scooters are a great answer to the“last mile problem of getting from a public transport station to one’s home.They're light enough to throw over your shoulder.They're easy to ride just about anywhere and don't need a lot of physical effort.The scooter can travel25km on one charge.It's convenient and easy to control.They are also good for the environment.Unlike cars and buses.electric scooter produce no carbon dioxide,need no fuel and make almost no noise.For many young people,they use them to copy cool celebrities they have seen in videos.第II卷V.Translation:(3+3+4+5=15’)Directions:Translate the following sentence into English,using the words given in the brackets.72.在场的人都觉得他说的话不能证明他是无辜的。

八年级阶段性质量检测数学试卷(含答案)

八年级阶段性质量检测数学试卷(含答案)

八年级阶段性质量检测数学试卷一.选择题(每小题3分,共30分)1.在下列长度的三条线段中,不能组成三角形的是()A.2cm,3cm,4cm B.3cm,6cm,6cmC.2cm,2cm,6cm D.5cm,6cm,7cm2.下列四个图形中,线段BE是△ABC的高的是()A B CD3.如图,B处在A的南偏西38°方向,C处在A处的南偏东22°方向,C处在B处的北偏东78°方向,则∠ACB的度数是()A.80°B.75°C.70°D.65°4.如图是两个全等三角形,图中的字母表示三角形的边长,则∠1等于()A.60°B.54°C.56°D.66°第4题图第5题图5.如图,把长短确定的两根木棍AB、AC的一端固定在A 处,和第三根木棍BM摆出△ABC,木棍AB固定,木棍AC绕A转动,得到△ABD,这个实验说明()A.△ABC与△ABD不全等B.有两边分别相等的两个三角形不一定全等C.两边和它们的夹角分别相等的两个三角形全等D.有两边和其中一边的对角分别相等的两个三角形不一定全等6.一个多边形内角和是1080°,则这个多边形是()A.六边形B.七边形C.八边形D.九边形7.如图,OP为∠AOB的角平分线,PC⊥OA于C,PD⊥OB于D,则下列结论中错误的是()A.∠COP=∠DOP B.PC=PD C.OC=ODD.∠CPD=2∠COD8.如图,AB⊥BF,ED⊥BF,CD=CB,判定△EDC≌△ABC的理由是()A.ASA B.SAS C.SSS D.HL第7题第8题第10题9.在△ABC中,AB=4,AC=6,则BC边上的中线AD的取值范围是()A.1<AD<5 B.4<AD<6 C.2<AD<10 D.3<AD<6 10.如图,已知线段AB=20米,MA⊥AB于点A,MA=6米,射线BD⊥AB于B,P点从B点向A运动,每秒走1米,Q 点从B点向D运动,每秒走3米,P、Q同时从B出发,则出发x秒后,在线段MA上有一点C,使△CAP与△PBQ全等,则x的值为()A.5 B.5或10 C.10 D.6或10二.填空题(每小题3分,共18分)11.等腰三角形的两边长分别为5cm、11cm,则这个等腰三角形的周长为cm.12.已知三角形的三边分别为2,a﹣1,4,那么a的取值范围是.13.若n边形的每个内角都等于150°,则n=.14.如图所示,∠A+∠B+∠C+∠D+∠E=.15.在△ABC中,∠A=50°,BD、CE为高,直线BD、CE 交于点H,则∠BHC=.16.如图,已知:四边形ABCD中,对角线BD平分∠ABC,∠DCB=117°,∠ABC=50°,∠BAD+∠CAD=180°,那么∠DAC的度数为度.第14题图第16题图三.解答题(共8小题)17.(8分)△ABC中,∠B=∠C+10°,∠A=∠B+10°,求△ABC的各内角的度数.18.(8分)已知AD是△ABC的高,∠BAD=70°,∠CAD=20°,求∠BAC的度数.19.(8分)如图,点B、E、C、F在同一条直线上,AB=DE,AC=DF,BE=CF,求证:AB∥DE.20.(8分)已知:如图,AC=BD,AD⊥AC,BC⊥BD.求证:AD=BC.21.(8分)如图,△ABC顶点的坐标分别为A(1,﹣1)、B(3,﹣1)、C(4,1).(1)将△ABC向上平移1个单位,再向左平移1个单位,请画出平移后得到的△A1B1C1并写出点A1、B1、C1的坐标;(2)若△A1B1C1与△A1B1D全等(D点与C1不重合),直接写出点D的坐标.22.(10分)如图,△ABC中,D是BC延长线上一点,满足CD=AB,过点C作CE∥AB且CE=BC,连接DE并延长,分别交AC、AB于点F、G.(1)求证:△ABC≌△DCE;(2)若∠B=50°,∠D=22°,求∠AFG的度数.23.(10分)已知在△ABC中,AB=AC,点D为△ABC左侧一动点,如图所示,点E在BD的延长线上,CD交AB于F,且∠BDC=∠BAC.(1)求证:∠ABD=∠ACD;(2)求证:AD平分∠CDE;(3)若在D点运动的过程中,始终有DC=DA+DB,在此过程中,∠BAC的度数是否变化?如果变化,请说明理由;如果不变,请求出∠BAC的度数.(说明:三边相等的三角形的每个内角均为60°)24.(12分)已知△ABC中,∠ABC=90゜,AB=BC,点A、B分别是x轴和y轴上的一动点.(1)如图1,若点C的横坐标为﹣4,求点B的坐标;(2)如图2,BC交x轴于D,若点C的纵坐标为3,A(5,0),求D点坐标;(3)如图3,在平面直角坐标系中,分别以OB、AB为直角边在第三、四象限作等腰Rt△OBF(OB=BF,∠OBF=90゜)和等腰Rt △ABE (AB =BE ,∠ABE =90゜),EF 交y 轴于点M ,求BEMABOSS ∆∆的值.参考答案一.选择题CCADD CDAAA二.填空题(共6小题)11.2712.故答案为:3<a<7.13.故答案为:十二.14.故答案为:180°.15.故答案为:130°或50°16.故答案为:52.三.解答题(共17小题)17.【解答】解:由题意:,解得∠A=70°,∠B=60°,∠C=50°.18.【解答】解:①如图1,当高AD在△ABC的内部时,∠BAC=∠BAD+∠CAD=70°+20°=90°;②如图2,当高AD在△ABC的外部时,∠BAC=∠BAD﹣∠CAD=70°﹣20°=50°,综上所述,∠BAC的度数为90°或50°.19.【解答】证明:∵BE=CF,∴BC=EF,在△ABC与△DEF中,,∴△ABC≌△DEF(SSS),∴∠ABC=∠DEF,∴AB∥DE.20.【解答】证明:连接DC,∵AD⊥AC,BC⊥BD,∴∠A=∠B=90°,在Rt△ADC和Rt△BCD中,∴Rt△ADC≌Rt△BCD(HL),∴AD=BC.21.【解答】解:(1)如图,则A1(0,0)、B1(2,0)、C1(3,2);(2)如图所示,D(﹣1,2)或(﹣1,﹣2)或(3,﹣2).22.【解答】(1)证明:∵CE∥AB,∴∠B=∠DCE,在△ABC与△DCE中,BC=CE,∠ABC=∠DCE,BA=CD,∴△ABC≌△DCE(SAS);(2)解:∵△ABC≌△DCE,∠B=50°,∠D=22°,∠ECD=∠B=50°,∠A=∠D=22°,∵CE∥AB,∴∠ACE=∠A=22°,∵∠CED=180°-∠D-∠ECD=108°,∴∠AFG=∠DFC=∠CED-∠ACE=108°-22°=86°.23.【解答】证明:(1)∵∠BDC=∠BAC,∠BFD=∠AFC,∴∠ABD=∠ACD;(2)如图1,过点A作AM⊥CD于点M,作AN⊥BE于点N.则∠AMC=∠ANB=90°.在△AMC和△ANB中∵∠AMC=∠ANB,∠ACM=∠ABN,AC=AB,∴△AMC≌△ANB(AAS),∴AM=AN.∴AD平分∠CDE(到角的两边距离相等的点在角的平分线上);(3)如图2,∠BAC的度数不变化;在CD上截取CP=DB,连接AP.∵CD=DA+DB=PD+CP,∴AD=PD.∵AB=AC,∠ABD=∠ACD,BD=CP,∴△ABD≌△ACP(SAS).∴AD=AP,∠BAD=∠CAP.∴AD=AP=PD,即△ADP是等边三角形,∴∠DAP=60°.∴∠BAC=∠BAP+∠CAP=∠BAP+∠BAD=60°.24.【解答】解:(1)如图1,作CM⊥y轴于M,则CM=4,∵∠ABC =∠AOB =90゜,∴∠CBM +∠ABO =90°,∠ABO +∠BAO =90°,∴∠CBM =∠BAO ,在△BCM 和△ABO 中∵∠BMC =∠AOB ,∠CBM =∠BAO ,BC =AB ,∴△BCM ≌△ABO (AAS ),∴OB =CM =4,∴B (0,﹣4).(2)如图2,作CM ⊥y 轴于M ,∵∠CBO +∠OBA =∠CBA =90°,∠OBA +∠BAO =90°,∴∠CBM =∠BAO ,在△CMB 和△BOA 中,∵∠CMO =∠BOA =90°,∠CBM =∠BAO ,BC =AB ,,∴△CMB ≌△BOA (AAS ),∴CM =BO ,AO =BM ,∵点C 的纵坐标为3,A (5,0),∴MO =3,OA =BM =5,∴CM =BO =BM ﹣MO =5﹣3=2,∴C (﹣2,3),B (0,﹣2), 易得BC 的解析式为:y =﹣52x ﹣2,当y =0时,﹣52x ﹣2=0,x =﹣45,故点D 的坐标为(﹣45,0).(3)如图3,作EN ⊥y 轴于N ,∵∠ENB =∠BOA =∠ABE =90°,∴∠OBA +∠NBE =90°,∠OBA +∠OAB =90°,∴∠NBE =∠BAO ,在△ABO 和△BEN 中∠AOB =∠BE ,∠BAO =∠NBE ,AB =BE ,∴△ABO ≌△BEN (AAS ),∴△ABO 的面积=△BEN 的面积,OB =NE =BF ,∵∠OBF =∠FBM =∠BNE =90°,∴在△BFM 和△NEM 中∠FMB =∠EMN ,∠FBM =∠ENM ,BF =NE ,∴△BFM ≌△NEM (AAS ),∴BM =NM ,∵△BME 边BM 上的高和△NME 的边MN 上的高相等,∴S △MEN =S △BEM =12S △BEN =12S △ABO , 即12BEM ABO S S ∆∆=.。

西南大学附属中学校2023-2024学年高二上学期阶段性检测(一)物理试卷(PDF版,含解析)

西南大学附属中学校2023-2024学年高二上学期阶段性检测(一)物理试卷(PDF版,含解析)

重庆市西南大学附中高2025届(二上)阶段性检测(一)物理试题全卷满分100分,75min 完卷一、单选题:本题共7个小题,每题4分,共28分 1.下列说法正确的是( ) A .大的带电球体不能视为点电荷 B .物体带负电荷是其失去电子的缘故 C .电场中电场强度为零的地方电势一定最低D .在点电荷О为球心、r 为半径的球面上各处的电场强度不同2.如图所示,a 、b 、c 是一条电场线上的三个点,电场线的方向由a 到c ,a 、b 间的距离等于b 、c 间的距离,a ϕ、b ϕ、c ϕ和E a 、E b 、E c 分别表示a 、b 、c 三点的电势和电场强度,可以断定( ) A .a b c E E E >> B .a b c E E E == C .a b c ϕϕϕ>> D .a b b c ϕϕϕϕ=--3.如图所示,水下光源S 向水面A 点发射一束光线,折射光线分为a 、b 两束。

则下列说法错误的是( ) A .在水中a 光的速度与b 光的一样大B .a 、b 两束光相比较,在真空中a 光的波长较长C .若保持入射点A 位置不变,将入射光线顺时针旋转,从水面上方观察,b 光先消失D .用同一双缝干涉实验装置分别用a 、b 光做实验,a 光干涉相邻条纹间距大于b 光干涉相邻条纹间距4.在如图所示的4种情况中,a 、b 两点的场强不同,电势相同的是( )A .带电平行板电容器两极板间的a 、b 两点A B C D6.均匀带电的球壳在球外空间产生的电场等效于电荷集中于球心处产生的点电荷电场.如图电场强度为E,一固定绝缘斜面的倾角为30,小物块自斜面底端以0v沿斜面向上做匀减速运动,(二、多选题:本题共3个小题,每小题5分,共15分,每小题有多个选项符合题意,全部选对得5分,部分选对得3分,有选错得0分。

8.如图所示,水平放置的平行板电容器上极板带正电,所带电荷量为Q,板间距离为d,上极板与静电计相连,静电计金属外壳和电容器下极板都接地。

安徽省六安第一中学2022-2023学年高一下学期第一次阶段检测试题政治

安徽省六安第一中学2022-2023学年高一下学期第一次阶段检测试题政治

六安一中2023年春学期高一年级第一次阶段检测政治试卷时间:75分钟分值:100分一、单选题(每小题3分,共48分)1.农民李某是W市农村集体资产股份合作制改革的受益者。

2022年上半年,李某从本村承包20亩土地搞种植经营,收入颇丰;下半年,李某将这20亩地租给种粮大户,从中获得租金。

在此过程中,李某2022年上下半年取得收入的分配方式分别是()①前者是按劳动要素分配,后者是按土地要素分配②前者是按劳分配,后者是按生产要素分配③前者是经营性收入,后者是财产性收入④前者是劳动性收入,后者是财产性收入A.①③B.①④C.②③D.②④2.中国式现代化是全体人民共同富裕的现代化,而分配制度是促进共同富裕的基础性制度。

下列举措中有利于增强财富分配公平性,缩小财富分配差距的是()①深化收入分配制度改革,完善初次、再次、三次分配协调配套基础性制度安排②发挥政府在初次分配中主要作用,健全技术、管理、数据等要素参与分配机制③完善以税收、社保、转移支付、基本公共服务均等化等手段为主的再分配机制④发挥第三次分配的作用,鼓励企业薪酬分配更多体现劳动要素,更多回报社会A.①②B.①③C.②④D.③④3.目前,我国已初步构建起以基本养老保险为基础、以企业(职业)年金为补充、与个人储蓄性养老保险和商业养老保险相衔接的养老保险体系。

规范发展个人储蓄性养老保险,推出个人养老金制度。

个人养老金是政府政策支持、个人自愿参加、市场化运营的补充养老保险制度。

个人养老金制度的实施()①有利于我国发展多层次、多支柱的养老保险体系②可以更好发挥其作为社会保障体系核心的作用③从根本上满足广大人民群众的养老保障需求④有利于个人合理规划养老资金,增加养老保障B.①④C.②③D.③④4.近代以来多种救国方案轮番上台,但都以失败告终。

中国迫切需要新的思想引领救亡运动,迫切需要新的组织凝聚革命力量。

1921年中国共产党应运而生,开始用马克思主义指导中国革命。

2023年春学期七年级语文阶段性检测试卷

2023年春学期七年级语文阶段性检测试卷

2023年春学期七年级语文阶段性检测试卷积累与运用:(37分)1.音形互写。

(5分)(1)我只是zhù()立凝望,觉得这一条紫藤萝瀑布不只在我眼前,也在我心上缓缓流过。

(2)紫色的大条幅上,泛着点点银光,就像迸.()溅的水花。

(3)我也不知道是什么缘故,常常自个儿忏.()悔,自个儿安慰。

(4)往日多么傲慢的我,多么jīn()持的我,原来也是个孱头。

(5)那个春天的早晨,奶奶突然发现院子角落的地方,拱出一点nèn()绿。

2.古诗文名句默写。

(10分)(1)念天地之悠悠, 。

(陈子昂《登幽州台歌》)(2)予独爱莲之出淤泥而不染,。

(作者:《爱莲说》)(3),衣冠简朴古风存。

(陆游《游山西村》)(4)《陋室铭》中表现陋室环境清幽的句子是:,。

(5)杜甫在《望岳》中表现自己不怕困难敢于攀登绝顶俯视一切的雄心和气概的句子是:,。

王安石的《登飞来峰》中与这两句有异曲同工之妙的句子是:,。

3. 下列各项中分析正确的一项是()(2分)①开怀大笑时,随着呼吸肌群的运动,胸腔和支气管先后扩张,增强了换气量和血氧饱和度。

②笑是一种最为简单而有效的健身运动。

③对胃、肠、肝、脾、胰等脏器也是一种极好的按摩。

④腹肌在大笑中强烈地收缩和震荡,不仅有助于把血液挤入胸腔静脉,改善心肌供血。

⑤因此,我们要注意搜集整理引人发笑的笑话、幽默等资料,尽可能去欣赏喜剧、相声之类让人发笑的艺术,使自己多笑几声。

A.第①句中的“随着”是介词,第④句中的“在”是动词。

B.“开怀大笑”“改善心肌供血”都是偏正短语。

C.“欣赏喜剧”是补充短语,“因此”是连词。

D.将选文各句组成语意连贯的一段话,最恰当的排列顺序是②①④③⑤。

4.下列各项表述不恰当的一项是()(2分)A. 《驿路梨花》一文,围绕哀牢山里的一所小茅屋展开故事,生动地展示了雷锋精神在祖国边疆军民中生根发芽,发扬光大的动人情景,再现了西南边疆少数民族乐于助人的淳朴民风,歌颂了互帮互助的良好的社会风貌。

2024年西师新版选择性必修3物理下册阶段测试试卷277

2024年西师新版选择性必修3物理下册阶段测试试卷277

2024年西师新版选择性必修3物理下册阶段测试试卷277考试试卷考试范围:全部知识点;考试时间:120分钟学校:______ 姓名:______ 班级:______ 考号:______总分栏题号一二三四五六总分得分评卷人得分一、选择题(共8题,共16分)1、用频率为v0的单色光照射某金属表面时,产生的光电子的最大初动能为E km,已知普朗克常量为h,光速为c,要使此金属发生光电效应,所用入射光的波长应不大于()A.B.C.D.2、下列说法中正确的是()A. 外界对气体做功,气体的内能一定增大B. 气体从外界吸收热量,气体的内能一定增大C. 液体的温度越高,布朗运动越明显D. 液体的温度越低,布朗运动越明显3、以下对固体、液体的描述,正确的是()A. 所有晶体都有确定的熔点以及各向异性的特点B. 同种物质可能以晶体和非晶体两种不同的形态出现C. 液体表面层分子密度比较密集,分子力表现为斥力D. 毛细现象只在液体浸润固体时发生4、下列说法正确的是()A. 动能相同的质子和电子,它们的德布罗意波的波长相同B. 一个氢原子处在n=4的能级,当它跃迁到较低能级时,最多能辐射出3种频率的光子C. 用相同频率的光在相同的条件下先后照射锌板和银板时均有光电子逸出,逸出的光电子动能一定相同D. 玻尔将量子观念引入原子领域,成功地解释了氢原子和其他原子光谱的实验规律5、1932年,英国物理学家查德威克利用放射性物质中的α粒子轰击铍原子核时,发现了一种看不见的、穿透性极强的粒子X。

核反应方程为:下列说法正确的是()A. 该核反应属于核裂变反应B. 粒子X表示的是中子C. 碳核与X核的质量之和等于α粒子和铍核的质量之和D. 碳核与X核的结合能之和等于α粒子和铍核的结合能之和6、太阳每秒释放的能量是92千万亿吨当量,折合能量约如果该能量为核反应产生的。

已知光在真空中速度则每秒钟太阳的质量亏损约为()A.B.C.D.7、关于近代物理知识,下列说法正确的是A. 光电子的最大初动能与入射光的频率成正比B. 在康普顿效应中,当入射的光子与晶体中的电子碰撞时,要把一部分动量转移给电子因而光子动量变小C. 原子核衰变时电荷数和质量都守恒D. 现在地球上消耗的能量,绝大部分来自太阳,即太阳内部裂变时释放的核能8、下列说法正确的是()A. 是核裂变反应B. 20个的原子核经过两个半衰期后剩下5个C. 在中子轰击下生成和的过程中,原子核中的平均核子质量变小D. 原子从一种定态跃迁到另一种定态时,一定辐射出一定频率的光子评卷人得分二、多选题(共6题,共12分)9、夏天;从湖底形成的一个气泡,在缓慢上升到湖面的过程中没有破裂。

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阶段检测卷
一、我会填(每空1分,11题每圈1分,共38分)
1、看图写数。

( ) ( ) ( )
2、按规律填数
3
、( )个十是80。

6个十加( )个十是100。

4、74里面有4个( )和( )个十。

5、一堆苹果,十个十个地数要数4次,五个五个地数要数( )次。

6、23-( )>20,括号里最大填( )。

7、把52、47、68、90、25、86这几个数从小到大排列后, 47是第( )个数,最后一个数是( )。

8、
用上面的三张卡片,每次拿两张组成一个两位数,然后按从大到小的顺序填在( )里。


) >

)>( )>( )
9.按百数表填数
10、一个两位数,个位和十位上的数字的和是3,差是1,这个两位数是( )或( )。

11、选择合适的数填在圈里。

48 74 45 64 49 83
个位上是4的数 双数 比50大的数
12、在百数表中,十位上是5的数一共有( )个。

32
班级____________________ 姓名___________________ ……………………………………密……………………………………封……………………………………线………………………………
90
70 8 0 3
48 52 54
百 十 个
13、用一个长方体最多可以描出( )个不同的长方形,用一个正方体最多可以描出( )个不同的正方形。

14、有15个鸡蛋,三个三个地数,要数( )次才能数完,五个五个地数,数( )次能数完。

15、一张正方形纸对折两次,可以折出如下的几种图形,其中图一的长方形最多有( )个,图二的正方形最多有( )个,图三的三角形最多有( )
个。

图一 图二
图三
16、三个三个地数,21的后面一个数是( )。

二、我会选。

(选择适合的答案,在□里打“√”。

每个1分,
共5分) 1.
用5根同样长的小棒可以摆成下面哪一种图形?
2. 下面哪个数最接近60?
5
个十和8个一
9个一和6个十 7个十
3. 哪一个算式的得数比
40小?
37+2
58-8
48-8
4. 果园里的桃树比梨树多一些,苹果树比梨树多得多。

哪种果树最多? 桃树 梨树 苹果树
5. 估一估,得数是六十多的算式是
45+20 45+2 75-30
三、判断(每个1分,共5分)
1、一张正方形纸对折两次可以折出正方形、长方形或三角形( )
2、一个一个地数,40的前面一个数是39;五个五个地数,65的后面一个数是66。

( )
3、“红花比黄花多8朵”也可以说黄花比红花少8朵。

( )
4、最大的两位数与最小的两位数相差89。

( )
5、79前面的第三个数是77。

( ) 四、我会算
1、直接写出得数(每个0.5分,共3分) 17–9 = 90–40 = 7 + 62 = 89–7 = 78–50 + 30 = 65–60+ 80 =
2、用竖式计算。

(每个2分,共8分)
32+6= 97-85= 23+54= 79-6=
五、数一数。

(每个1分,共7分)
( )最多,( )最少。

比 多( )个。

六、猜一猜(对的画“√”,每个2分,共4分) (1)小明有连环画34本,故事书比连环画少得多,故事书可能有多少本?
( )个 ( )个 ( )个 ( )个 13本 44本 78本
(2)一班有43人去春游,二班比一班多一些,
二班可能去了多少人?
七、我会写。

(每小题6分,共30分)
1.
2.10年前,王刚5岁,再过10年王刚多少岁?
3(1)小明和小华一共拍了多少下?
(2)小华比小红少拍了多少下?
(3)小华至少再拍多少下就比小明多了?
4.树上有一群小鸟,先飞走了
20只,又飞走了10只,现在树上比原来少了多少只?
5.小丁送给小亮10块糖后,两个人的糖块数同样多。

原来小丁比小亮多多少块糖?
6.小红和小明都有15根铅笔,过了半年后,小红用了8根,小明的剩下了6根,谁剩下的多?
45人40人31人
小明
55下
小红
40下
小华
30下
?个
=
=
?个
13个
阶段检测卷答案
一、每空1分共38分,第11题每个圈1分,错或少1个不得分。

1.30 53 21
2.100 80 60 50 56
3.8 4
4.一7
5.8
6. 2
7. 2 90
8.83 80 38 30
9.24 25 26 33
10.12或21
11.第一个圈:74 64 第二个圈:48 74 64 第三个圈:
74 64 83
12.10
13. 3 1
14. 5 3
15.9 5 8
16.24
二、每小题1分,共5分
1.
2. 5个十和8个一
3. 37+2
4. 苹果树
5. 45+20
三、每小题1分,共5分√×√√×
四1. 每个0.5分,共3分
横着看8 8 29 50 61 69 63 82 68 85
2. 得数1分竖式1分,共8分
38 12 77 73
五、每个1分,共7分
4 2
5 4 三角形正方形 2
六每个2分,共4分(1)13本(2)45人
七、共30分
1. 每小题2分13-7=6(个)40+30=70(个)
2. 5分10+5+10=25(岁)
3. 每小题2分(1)55+30=85(下)(2)40-30=10(下)(3)55-30+1=26(下)
4. 5分20+10=30(只)
5. 5分10+10=20(块)
6. 5分(算式3分,比大小1分,答1分)
15-8=7(根)7>6 小红剩下的多。

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