八下第一次月考试卷

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2024年济南八年级下学期语文第一次月考试卷(3月份)(含答案)

2024年济南八年级下学期语文第一次月考试卷(3月份)(含答案)

八年级下学期语文月考试题(2024.03)(满分150分时间:120分钟)一.语言运用(16分)阅读下面语段,完成下面小题。

汉字,是中华先民的肌肤,温润丰盈;是中华文化的血脉,温馨情浓;是中华文明的河流,磅.磷浑厚。

眺望千古江流,邀远的繁华也好,萧瑟的春秋也罢,它们早已随着滔滔的江水向东逝去,唯有汉字里始终珍藏着星火(liáo yuán ) 的奋进、坚韧不拔的意志,还有丰富深邃的(rén qínɡshìɡù).....令人叹为观止。

汉字,永远屹.立于中华儿女的灵魂深处。

汉字,是祖先留给我们的幸运礼物,也是民族文化经过重重劫难.后留下来的宝贵薪火。

即使人类已经步入电子时代,科学技术日新月异,新的发明不断(yǒnɡxiàn ) ,依然发挥着不可或缺的作用。

在世界四大文明古国中,为什么只有中国永不衰竭?就是因为中华民族有悠久深邃的汉字承载,有儒道思想和龙的精神:"白强不息""厚德载.物"国的新时代拉开(wéi mù)1.下面加点字的注音完全正确的一项()(3分)A.磅.礴(pánɡ)屹.立(yì)劫.难(nàn)厚德载.物(zài)B.磅.礴(bánɡ)屹.立(qì)劫.难(nán)厚德载.物(zài)C.磅.礴(pánɡ)屹.立(yì)劫.难(nàn)厚德载.物(zǎi)D.磅.礴(bánɡ)屹.立(qì)劫.难(nán)厚德载.物(zǎi)2.在上面语段中依次填入横线上的词语,书写完全正确的一项是()(3分)A.燎原人情事故踊现帷幕B.缭原人情世故涌现维幕C.燎原人情世故涌现帷幕D.燎原人情事故踊现维幕3.下列加点成语使用恰当的一项是()(3分)A.初夏的济南将会柳绿荷红、草长莺飞....。

2022—2023年八年级下学期第一次月考语文试卷及答案

2022—2023年八年级下学期第一次月考语文试卷及答案

2022—2023年第二学期八年级下册第一次月考语文试卷满分150分时间:120分钟注意事项:本试题共 12 页,满分为150分,考试时间为120分钟。

答题前,请考生务必将自己的姓名、座号和准考证号填写在答题卡规定位置,并同时将考点、姓名、准考证号和座号填写在试题规定的位置。

答选择题时,必须使用 2B 铅笔填涂答题卡上相应题目的答题标号,修改时,要用橡皮擦干净,再选涂其他答案标号;答非选择题时,用0.5m黑色签字笔在答题卡上题号所提示的答题区域作答。

直接在试题上作答无效。

一、(16分)阅读下面的文段,完成1-2题。

(6分)幅员辽阔的中华大地,孕育了丰富多彩的民俗文化。

从热情好客..(fú)..(hào)、能驾船、会凫水的鲁镇小伙伴,我们感受到了由社戏引发的人与人之间的美好情谊;读“东山的糜子..(mí)西山的谷,肩膀上的红旗手中的书”,我们了解到了信天游这种扣人心弦的民歌形式;看安塞腰鼓,我们体会到了安塞腰鼓“骤雨..(xuán)一样,是飞扬的流苏;乱蛙....(zòu)一样,是急促..(cù)的鼓点;旋风(wā)一样,是蹦跳的脚步;火花一样,是闪射的瞳仁..(tóng);斗虎一样,是强键的风姿”的奇伟磅礴。

1.上面文段中加点字的读音完全正确的一项是 ( ) (3分)A.好客(hào ) 凫水(fú)B.糜子(mí) 急促(cù)C.骤雨(zòu) 乱蛙(wā)D.旋风(xuán) 瞳仁(tóng)2.上面文段中画横线词语书写有误的一项是()(3分)A.肩膀B.蹦跳C.强键D.磅礴3.下列句子中的成语使用不恰当...的一项是() (3分)A.为保障游客权益,使游客在参.差不齐...的旅游信息中不受骗,国家大力整顿了旅游市场。

B.听完他的话,我振振有辞地说:“不相信你的话,你这是挑拔离间....。

河北省邢台市第十九中学2023-2024学年八年级下学期第一次月考数学试题

河北省邢台市第十九中学2023-2024学年八年级下学期第一次月考数学试题

河北省邢台市第十九中学2023-2024学年八年级下学期第一次月考数学试题学校:___________姓名:___________班级:___________考号:___________一、单选题1.下列调查适合普查的是( ) A .检测某城市的空气质量B .了解某市居民对废电池的处理情况C .日光灯厂要检测一批灯管的使用寿命D .学校在给学生订做校服前进行的尺寸大小的调查2.下列调查,样本具有代表性的是( )A .了解全校同学对课程的喜欢情况,对某班男同学进行调查B .了解某小区居民的防火意识,对你们班同学进行调查C .了解商场的平均日营业额,选在周末进行调查D .了解观众对所看电影的评价情况,对座号是奇数号的观众进行调查 3.下列图象中,表示y 是x 的函数的个数有( )A .1个B .2个C .3个D .4个4.若点()2,3P m m ++在平面直角坐标系的x 轴上,则点P 的坐标为( ) A .()1,0-B .()0,1C .()1,0D .()0,1-5.为了解某市80000名学生参加初中毕业考试英语成绩情况,从中抽取了2000名考生的英语成绩进行统计分析,在这次调查中,下列说法:①这80000名学生参加初中毕业考试英语成绩的全体是总体;②每个考生是个体;③2000名考生是总体的一个样本;④样本容量是2000.其中正确的是( ) A .①②③④B .②③④C .①④D .①③④6.如果A (1-a ,b +1)关于y 轴的对称点在第三象限,那么点B (1-a ,b )在( ) A .第一象限B .第二象限C .第三象限D .第四象限7.如图所示的折线图描述了某地某日的气温变化情况.根据图中信息,下列说法错误的是( ) A .4:00气温最低 B .6:00气温为24 ℃C .14:00气温最高D .气温是30 ℃的时刻为16:008.已知等腰三角形的周长为24cm ,若底边长为y ,一腰长为x ,则y 与x 之间的函数关系式为( )A .()242012y x x =-<<B .()242612y x x =-<<C .()24012y x x =-<<D .()24612y x x =-<<9.如图是反映两个变量关系的图,下列的四个情境比较合适该图的是( )A .一杯热水放在桌子上,它的水温与时间的关系B .一辆汽车从起动到匀速行驶,速度与时间的关系C .一架飞机从起飞到降落的速度与时晨的关系D .踢出的足球的速度与时间的关系10.下表列出了一次实验的统计数据,表示皮球从高处落下时,弹跳高度b 与下落高度d 的关系,试问下面哪个式子能表示这种关系( )A .2b d =B .2b d =C .2d b =D .25b d =+11.如图,在平面直角坐标系中,正三角形OAB 的顶点B 的坐标为()2,0,点A 在第一象限内,将OAB V沿直线OA 的方向平移至O A B '''△的位置,此时点A '的横坐标为3,则点B '的坐标为( )A .()3,3B .(C .(D .(12.下列说法正确的个数是( ) (1)若0ab =,则点(),P a b 表示原点(2)点()21,a -在第四象限(3)已知()1,3A -与()1,3B ,则直线AB 平行于y 轴(4)已知()1,3A -,AB y P 轴,且4AB =,则B 点的坐标为()1,1A .0个B .1个C .2个D .3个13.小明根据邻居家的故事写了一首小诗:“儿子学成今日返,老父早早到车站,儿子到后细端详,父子高兴把家还.”如果用纵轴y 表示父亲与儿子行进中离家的距离,用横轴x 表示父亲离家的时间,那么下面的图象与上述诗的含义大致吻合的是( )A .B .C .D .14.如图,在平面直角坐标系上有个点()1,0A -,点A 第1次向上跳动1个单位至点()11,1A -,紧接着第2次向右跳动2个单位至点()21,1A ,第3次向上跳动1个单位,第4次向左跳动3个单位,第5次又向上跳动1个单位,第6次向右跳动4个单位,…,依次规律跳动下去,点A 第2022次跳动至点2022A 的坐标是( )A .()506,1010-B .()506,1011C .()505,1010-D .()505,1011二、填空题15.某校八年级共有学生400人,为了解这些学生的视力情况,抽查20名学生的视力,对所得数据进行整理,在得到的频数分布表中,各小组频数之和等于.若某一小组的频数为4,则该小组的频率为;若数据在0.95 1.15~这一小组的频率为0.3,则估计该校八年级学生视力在0.95 1.15~这一范围内的人数约为人.16.函数y =x 的取值范围是. 17.小丽家在学校北偏西60︒方向上,距学校4km ,以学校所在位置为坐标原点建立直角坐标系,1km 为一个单位长度,则小丽家所在位置的坐标为.18.如图1,点P 从ABC V 的顶点A 出发,沿A →B →C 匀速运动到点C ,图2是点P 运动时线段CP 的长度y 随时间x 变化的关系图象,其中点Q 为曲线部分的最低点,则ABC V 的边AB 的长度为.三、解答题19.已知点()24,1P m m +-,试分别根据下列条件,求出点P 的坐标.(1)点P 在过点()2,3A -且与x 轴平行的直线上; (2)点P 到x 轴的距离是1; (3)点P 到x 轴,y 轴的距离相等.20.某校举行全体学生“汉字听写”比赛,每位学生听写汉字39个.随机抽取了部分学生的听写结果,绘制成如下的统计图表图1 图2根据以上信息完成下列问题:(1)统计表中的m =______,n =______; (2)补全条形统计图;(3)扇形统计图中“B ”类所对应的圆心角是______度;(4)若该校有4000名学生,且正确字数在“A ”类和“B ”类的定为不合格,需要补考,求该校需要参加补考的学生人数.21.如图,在平面直角坐标系xOy 中,ABC V 的三个顶点分别为()3,4A -,()5,1B -,()1,2C -.(1)画出ABC V 关于x 轴对称的111A B C △,并写出点1B 的坐标;(2)画出111A B C △向右平移6个单位长度,再向上平移2个单位长度后的222A B C △,并写出点2B 的坐标; (3)求出ABC V 的面积.22.某软件科技公司20人负责研发与维护游戏、网购、视频和送餐共4款软件.投入市场后,游戏软件的利润占这4款软件总利润的40%.如图是这4款软件研发与维护人数的扇形统计图和利润的条形统计图.根据以上信息,网答下列问题 (1)直接写出图中a ,m 的值;(2)分别求网购与视频软件的人均利润;(3)在总人数和各款软件人均利润都保持不变的情况下,能否只调整网购与视频软件的研发与维护人数,使总利润增加60万元?如果能,写出调整方案;如果不能,请说明理由.23.深圳市12号地铁线断安段正在施工,现甲乙两工程队共同承包,A B 两地之间的道路.两队分别从,A B 两地相向修建,已知甲队先施工3天,乙队才开始施工,乙队施工几天后因另有紧急任务暂停施工,因考虑工期,由甲队以原速的2倍修建,乙队完成紧急任务后又以原速恢复施工,直到道路修通,甲、乙两队各自修路长度与时间之间的关系如图所示,请结合图中信息解答下列问题.(1)在施工的过程中,甲队在提速后每天修道路米;乙队每天修路 米. (2)乙队共参与施工的天数是 天. (3)求,A B 两地之间的道路长度.24.已知平面直角坐标系内两点A 、B ,点(3,4)A -,点B 与点A 关于y 轴对称. (1)则点B 的坐标为________;(2)动点P 、Q 分别从A 点、B 点同时出发,沿直线AB 向右运动,同向而行,点P 的速度是每秒4个单位长度,点Q 的速度是每秒2个单位长度,设P 、Q 的运动时间为t 秒,用含t 的代数式表示OPQ ∆的面积S ,并写出t 的取值范围; (3)在平面直角坐标系中存在一点(,)M m m -,满足23MOB ABO S S ∆∆≤.求m 的取值范围.。

2023-2024学年吉林省延边州名校八年级下学期第一次月考语文试题

2023-2024学年吉林省延边州名校八年级下学期第一次月考语文试题

2023-2024学年吉林省延边州名校八年级下学期第一次月考语文试题1. 请在下面的横线上端正地书写正确答案。

(1)________,胡为乎泥中?(《诗经·式微》)(2)城阙辅三秦,风烟望五津。

_________,__________。

(王勃《送杜少府之任蜀州》)(3)《诗经·子衿》中,点明地点,写她在城楼上因久候恋人不至而心烦意乱,来来回回地走个不停的句子是:_________,__________。

(4)当你的朋友身处异乡倍感孤寂时,你可以借用唐朝诗人王勃《送杜少府之任蜀州》中的_________,__________两句诗来劝慰他。

2. 阅读语段,按要求完成下面题目。

凡是到达了的地方,都属于昨天。

哪怕那山再青,那水再秀,那风再温柔。

太深的流连便成了一种羁绊,绊住的()是双脚,()是未来。

人能走多远?这话不是要问向双脚而是要问向志向;人能攀多高?这事不是要问向双手而是要问向意志。

即使命运从不发芽,不要wǎn惜千百次播种□即使花朵结不成果实,不要遗憾千百次凋零。

信念告诉我们的人生:没有比脚再长的道路,没有比人更高的山峰。

(1)给下面加点字注音,根据拼音填写汉字。

①羁.( )绊②wǎn( )惜(2)语段“□”处填入标点符号,恰当的一项是()A.,B.:C.?D.;(3)结合语境,请为语段括号内选择恰当的一组关联词语。

()A.如果那么B.虽然但是C.无论都D.不仅还(4)结合语段内容,仿照画线语句,续写一句话。

(甲)阅读下文,回答问题。

桃花源记晋太元中,武陵人捕鱼为业。

缘溪行,忘路之远近。

忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。

渔人甚异之,复前行,欲穷其林。

林尽水源,便得一山,山有小口,仿佛若有光。

便舍船,从口入。

初极狭,才通人。

复行数十步,豁然开朗。

土地平旷,屋舍俨然,有良田、美池、桑竹之属。

阡陌交通,鸡犬相闻。

其中往来种作,男女衣着,悉如外人。

黄发垂髫,并怡然自乐。

人教版八年级下学期第一次月考数学试卷含答案解析

人教版八年级下学期第一次月考数学试卷含答案解析

八年级(下)第一次月考数学试卷一、选择题(每小题3分,共30分)1.若为二次根式,则m的取值为()A.m≤3 B.m<3 C.m≥3 D.m>32.下列式子中二次根式的个数有()(1);(2);(3);(4);(5);(6);(7).A.2个B.3个C.4个D.5个3.当有意义时,a的取值范围是()A.a≥2 B.a>2 C.a≠2 D.a≠﹣24.对于二次根式,以下说法不正确的是()A.它是一个正数B.是一个无理数C.是最简二次根式D.它的最小值是35.要登上某建筑物,靠墙有一架梯子,底端离建筑物5m,顶端离地面12m,则梯子的长度为()A.12m B.13m C.14m D.15m6.如图,AB=BC=CD=DE=1,且BC⊥AB,CD⊥AC,DE⊥AD,则线段AE的长为()A.1.5 B.2 C.2.5 D.37.下列几组数中,不能作为直角三角形三边长度的是()A.1.5,2,2.5 B.3,4,5 C.5,12,13 D.20,30,408.如果正方形ABCD的面积为,则对角线AC的长度为()A.B.C.D.9.如图,有一块直角三角形纸片,两直角边AC=6cm,BC=8cm,现将直角边AC沿直线AD折叠,使它落在斜边AB上且与AE重合,则CD等于()A.2cm B.3cm C.4cm D.5cm10.如图,在长方形ABCD中,AB=3cm,AD=9cm,将此长方形折叠,使点B与点D重合,折痕为EF,则△ABE的面积为()A.6cm2B.8cm2C.10cm2D.12cm2二、填空题(每空3分,共24分)11.当x时,式子有意义;当x时,式子有意义.12.已知:,则x2﹣xy=.13.当x时,.15.如图是北京第24届国际数学家大会会徽,由4个全等的直角三角形拼合而成,若图中大小正方形的面积分别为52和4,则直角三角形的两直角边分别为.16.一只蚂蚁从长、宽都是3,高是8的长方体纸箱的A点沿纸箱爬到B点,那么它所行的最短路线的长是.17.如图,所有的四边形都是正方形,所有的三角形都是直角三角形,其中最大的正方形的边长为7cm,则正方形A,B,C,D的面积之和为cm2.18.已知,则=.三、计算:(16分)19.计算下列各题:(1);(2)(4+)(4﹣);(3)(3﹣2+)÷2;(4).四、解答题(本大题共6小题,共50分.)20.已知:x=+1,y=﹣1,求下列代数式的值.(1)x2﹣xy+y2(2)x2﹣y2.21.已知:如图,Rt△ABC中,∠C=90°,AC=,BC=,求(1)Rt△ABC的面积;(2)斜边AB的长.22.如图,四边形ABCD中,AB=3,BC=4,CD=12,AD=13,且∠B=90°.求四边形ABCD 的面积.23.如图所示,有一条等宽的小路穿过长方形的草地ABCD,若AB=60m,BC=84m,AE=100m,则这条小路的面积是多少?24.如图,折叠长方形一边AD,点D落在BC边的点F处,BC=10cm,AB=8cm,求:(1)FC的长;(2)EF的长.25.观察下列等式:①=+1;②=+;③=+;…,(1)请用字母表示你所发现的律:即=.化简计算:(+++…+).-湖北省黄石市慧德学校八年级(下)第一次月考数学试卷参考答案与试题解析一、选择题(每小题3分,共30分)1.若为二次根式,则m的取值为()A.m≤3 B.m<3 C.m≥3 D.m>3【考点】二次根式有意义的条件.【分析】根据二次根式的意义,被开方数大于或等于0.【解答】解:根据二次根式的意义,得3﹣m≥0,解得m≤3.故选A.【点评】主要考查了二次根式的意义和性质.二次根式中的被开方数必须是非负数,否则二次根式无意义.2.下列式子中二次根式的个数有()(1);(2);(3);(4);(5);(6);(7).A.2个B.3个C.4个D.5个【考点】二次根式的定义.【分析】根据二次根式的概念“形如(a≥0)的式子,即为二次根式”,进行分析.【解答】解:根据二次根式的概念,知(2)(6)中的被开方数都不会恒大于等于0,故不是二次根式;(4)中的根指数是3,故不是二次根式;故二次根式是(1)(3)(5)(7),共4个.故选C.【点评】此题考查了二次根式的概念,特别要注意a≥0的条件.3.当有意义时,a的取值范围是()A.a≥2 B.a>2 C.a≠2 D.a≠﹣2【考点】二次根式有意义的条件;分式有意义的条件.【分析】本题主要考查代数式中字母的取值范围,代数式中主要有二次根式和分式两部分.【解答】解:根据二次根式的意义,被开方数a﹣2≥0,解得a≥2;根据分式有意义的条件,a﹣2≠0,解得a≠2.∴a>2.故选B.【点评】函数自变量的范围一般从三个方面考虑:(1)当函数表达式是整式时,自变量可取全体实数;(2)当函数表达式是分式时,考虑分式的分母不能为0;(3)当函数表达式是二次根式时,被开方数非负数.4.对于二次根式,以下说法不正确的是()A.它是一个正数B.是一个无理数C.是最简二次根式D.它的最小值是3【考点】最简二次根式.【分析】根据二次根式的性质,被开方数大于等于0,根据非负数的性质,逐一判断.【解答】解:∵x2+9总是正数,∴当x=0时,二次根式==3,是个有理数,∴B错.故选B.【点评】本题考查了两个非负数的性质:≥0(a≥0),a2≥0.5.要登上某建筑物,靠墙有一架梯子,底端离建筑物5m,顶端离地面12m,则梯子的长度为()A.12m B.13m C.14m D.15m【考点】勾股定理的应用.【分析】如(解答)图,AB为梯子长,AC为底端离建筑物的长5m,BC为顶端离地面的长12m;根据勾股定理即可求得.【解答】解:如图:∵AC=5m,BC=12m,∠C=90°∴AB==13m故选B.【点评】此题考查了勾股定理的应用.解题时要注意数形结合思想的应用.6.如图,AB=BC=CD=DE=1,且BC⊥AB,CD⊥AC,DE⊥AD,则线段AE的长为()A.1.5 B.2 C.2.5 D.3【考点】勾股定理.【分析】由AB垂直于BC,得到三角形ABC为直角三角形,进而由AB及BC的长,利用勾股定理求出AC的长,由AC垂直于CD,得到三角形ACD为直角三角形,由AC及CD 的长,利用勾股定理求出AD的长,由DE垂直于AD,得到三角形ADE为直角三角形,由AD及DE的长,利用勾股定理即可求出AE的长.【解答】解:∵BC⊥AB,CD⊥AC,AC⊥DE,∴∠B=∠ACD=∠ADE=90°,∵AB=BC=CD=DE=1,∴由勾股定理得:AC==;AD==;AE==2.故选B.【点评】此题考查了勾股定理的运用,熟练掌握勾股定理是解本题的关键.7.下列几组数中,不能作为直角三角形三边长度的是()A.1.5,2,2.5 B.3,4,5 C.5,12,13 D.20,30,40【考点】勾股定理的逆定理.【分析】根据勾股定理的逆定理:如果三角形有两边的平方和等于第三边的平方,那么这个三角形是直角三角形.如果没有这种关系,这个三角形就不是直角三角形.【解答】解:A、1.52+22=2.52,符合勾股定理的逆定理,故错误;B、32+42=52,符合勾股定理的逆定理,故错误;C、52+122=132,符合勾股定理的逆定理,故错误;D、202+302≠402,不符合勾股定理的逆定理,故正确.故选D.【点评】本题考查了勾股定理的逆定理,在应用勾股定理的逆定理时,应先认真分析所给边的大小关系,确定最大边后,再验证两条较小边的平方和与最大边的平方之间的关系,进而作出判断.8.如果正方形ABCD的面积为,则对角线AC的长度为()A.B.C.D.【考点】正方形的性质.【分析】根据正方形的面积等于对角线乘积的一半得出AC的长即可.【解答】解:∵正方形ABCD的面积为,AC=BD,∴AC×BD=,则AC2=,故AC=,故选:A.【点评】此题主要考查了正方形的性质,利用正方形的面积等于对角线乘积的一半得出是解题关键.9.如图,有一块直角三角形纸片,两直角边AC=6cm,BC=8cm,现将直角边AC沿直线AD折叠,使它落在斜边AB上且与AE重合,则CD等于()A.2cm B.3cm C.4cm D.5cm【考点】翻折变换(折叠问题).【分析】根据翻折的性质可知:AC=AE=6,CD=DE,设CD=DE=x,在RT△DEB中利用勾股定理解决.【解答】解:在RT△ABC中,∵AC=6,BC=8,∴AB===10,△ADE是由△ACD翻折,∴AC=AE=6,EB=AB﹣AE=10﹣6=4,设CD=DE=x,在RT△DEB中,∵DEDE2+EB2=DB2,∴x2+42=(8﹣x)2∴x=3,∴CD=3.故选B.【点评】本题考查翻折的性质、勾股定理,利用翻折不变性是解决问题的关键,学会转化的思想去思考问题.10.如图,在长方形ABCD中,AB=3cm,AD=9cm,将此长方形折叠,使点B与点D重合,折痕为EF,则△ABE的面积为()A.6cm2B.8cm2C.10cm2D.12cm2【考点】翻折变换(折叠问题).【分析】首先根据翻折的性质得到ED=BE,再设出未知数,分别表示出线段AE,ED,BE 的长度,然后在Rt△ABE中利用勾股定理求出AE的长度,进而求出AE的长度,就可以利用面积公式求得△ABE的面积了.【解答】解:∵长方形折叠,使点B与点D重合,∴ED=BE,设AE=,在Rt△ABE中,AB2+AE2=BE2,∴32+x2=(9﹣x)2,解得:x=4,∴△ABE的面积为:3×4×=6(cm2).故选:A.【点评】此题主要考查了图形的翻折变换和学生的空间想象能力,解题过程中应注意折叠后哪些线段是重合的,相等的,如果想象不出哪些线段相等,可以动手折叠一下即可.二、填空题(每空3分,共24分)11.当x≥﹣1时,式子有意义;当x>2时,式子有意义.【考点】二次根式有意义的条件;分式有意义的条件.【分析】根据二次根式有意义的条件可得x+1≥0,再解即可;根据二次根式有意义的条件和分式有意义的条件可得,再解不等式组即可.【解答】解:由题意得:x+1≥0,解得:x≥﹣1;由题意得:,解得:x>2,故答案为:≥﹣1;>2.【点评】此题主要考查了二次根式和分式有意义的条件,关键是掌握二次根式中的被开方数是非负数;分式有意义的条件是分母不等于零.12.已知:,则x2﹣xy=8.【考点】非负数的性质:算术平方根;非负数的性质:偶次方.【分析】首先根据非负数的性质列出方程求出x、y的值,然后代入所求代数式计算即可.【解答】解:∵,∴,解得,∴x2﹣xy=4+4=8.【点评】本题考查了非负数的性质:几个非负数的和为0时,这几个非负数都为0.13.当x≤时,.【考点】二次根式的性质与化简.【专题】计算题.【分析】因为=|2x﹣1|,结合二次根式以及绝对值的性质求解.【解答】解:∵=1﹣2x根据算术平方根的结果为非负数,可知1﹣2x≥0,解得x≤,故当x≤时,=1﹣2x.【点评】根据算术平方根的结果为非负数,列不等式是解题的关键.故答案为:“两直线平行,同位角相等”.15.如图是北京第24届国际数学家大会会徽,由4个全等的直角三角形拼合而成,若图中大小正方形的面积分别为52和4,则直角三角形的两直角边分别为6和4.【考点】勾股定理.【分析】设全等的直角三角形的两直角边长分别为a,b(a>b),则根据已知条件和勾股定理得到a2+b2=52,(a﹣b)2=4,根据这两个等式可以求出a,b的长.【解答】解:设全等的直角三角形的两直角边长分别为a,b(a>b>0),∵图中大小正方形的面积分别为52和4,∴a2+b2=52,(a﹣b)2=4,∴a﹣b=2,∴a=b+2,代入a2+b2=52中得:(b+2)2+b2=52,整理得(x﹣4)(x+6)=0∴b1=4,b2=﹣6(不合题意舍去),∴a=4+2=6,∴直角三角形的两条直角边的长分别为4,6,故答案为:6和4.【点评】此题主要考查了勾股定理和三角形,正方形的面积公式,解题关键在于找出各边关系列出方程.16.一只蚂蚁从长、宽都是3,高是8的长方体纸箱的A点沿纸箱爬到B点,那么它所行的最短路线的长是10.【考点】平面展开-最短路径问题.【专题】应用题.【分析】根据”两点之间线段最短”,将点A和点B所在的两个面进行展开,展开为矩形,则AB为矩形的对角线,即蚂蚁所行的最短路线为AB.【解答】解:将点A和点B所在的两个面展开,则矩形的长和宽分别为6和8,故矩形对角线长AB==10,即蚂蚁所行的最短路线长是10.故答案为:10.【点评】本题的关键是将点A和点B所在的面展开,运用勾股定理求出矩形的对角线.17.如图,所有的四边形都是正方形,所有的三角形都是直角三角形,其中最大的正方形的边长为7cm,则正方形A,B,C,D的面积之和为49cm2.【考点】勾股定理.【分析】根据正方形的面积公式,连续运用勾股定理,发现:四个小正方形的面积和等于最大正方形的面积.【解答】解:由图形可知四个小正方形的面积和等于最大正方形的面积,故正方形A,B,C,D的面积之和=49cm2.故答案为:49cm2.【点评】熟练运用勾股定理进行面积的转换.18.已知,则=.【考点】二次根式有意义的条件.【分析】根据二次根式的性质,被开方数大于等于0,求出满足两个被开方数条件的x的值.【解答】解:依题意有x﹣2≥0且2﹣x≥0,解得x=2,此时y=,则=.【点评】主要考查了二次根式的意义和性质.概念:式子(a≥0)叫二次根式,此时≥0;性质:二次根式中的被开方数必须是非负数,否则二次根式无意义.三、计算:(16分)19.计算下列各题:(1);(2)(4+)(4﹣);(3)(3﹣2+)÷2;(4).【考点】二次根式的混合运算.【专题】计算题.【分析】(1)根据二次根式的乘法法则运算;(2)利用平方差公式计算;(3)先把各二次根式化为最简二次根式,然后把括号内合并后进行二次根式的除法运算;(4)先把各二次根式化为最简二次根式,然后合并即可.【解答】解:(1)原式=﹣=﹣=﹣46=﹣24;(2)原式=16﹣5=11;(3)原式=(6﹣+4)÷2=÷2=;(4)原式=++=.【点评】本题考查了二次根式的计算:先把各二次根式化为最简二次根式,再进行二次根式的乘除运算,然后合并同类二次根式.在二次根式的混合运算中,如能结合题目特点,灵活运用二次根式的性质,选择恰当的解题途径,往往能事半功倍.四、解答题(本大题共6小题,共50分.)20.已知:x=+1,y=﹣1,求下列代数式的值.(1)x2﹣xy+y2(2)x2﹣y2.【考点】二次根式的化简求值.【分析】(1)把式子写成(x﹣y)2﹣xy的形式,然后代入求值即可;(2)把式子写成(x+y)(x﹣y)的形式,然后代入求解即可.【解答】解:(1)原式=(x﹣y)2+xy=22+(+1)(﹣1)=4+2=6;(2)原式=(x+y)(x﹣y)=2×2=4.【点评】本题考查了求代数式的值,正确对代数式进行变形可以简化运算过程.21.已知:如图,Rt△ABC中,∠C=90°,AC=,BC=,求(1)Rt△ABC的面积;(2)斜边AB的长.【考点】二次根式的应用.【分析】(1)利用二次根式的乘法运算公式直接求出即可;(2)利用勾股定理和完全平方公式求出AB即可.【解答】解:(1)Rt△ABC的面积=AC×BC=×(+)(﹣)=;(2)斜边AB的长==.答:斜边AB的长为.【点评】此题主要考查了二次根式的应用,正确利用乘法公式进行计算求出是解题关键.22.如图,四边形ABCD中,AB=3,BC=4,CD=12,AD=13,且∠B=90°.求四边形ABCD 的面积.【考点】勾股定理;勾股定理的逆定理.【专题】计算题.【分析】连接AC,先根据勾股定理求出AC的长度,再根据勾股定理的逆定理判断出△ACD 的形状,最后利用三角形的面积公式求解即可.【解答】解:连接AC,如下图所示:∵∠ABC=90°,AB=3,BC=4,∴AC==5,在△ACD中,AC2+CD2=25+144=169=AD2,∴△ACD是直角三角形,∴S=ABBC+ACCD=×3×4+×5×12=36.四边形ABCD【点评】本题考查的是勾股定理、勾股定理的逆定理及三角形的面积,根据勾股定理的逆定理判断出△ACD的形状是解答此题的关键,难度适中.23.如图所示,有一条等宽的小路穿过长方形的草地ABCD,若AB=60m,BC=84m,AE=100m,则这条小路的面积是多少?【考点】生活中的平移现象;勾股定理.【专题】几何图形问题.【分析】根据勾股定理,可得BE的长,再根据路等宽,可得FD,根据矩形的面积减去两个三角形的面积,可得路的面积.【解答】解;路等宽,得BE=DF,△ABE≌△CDF,由勾股定理,得BE==80(m)S△ABE=60×80÷2=2400(m2)路的面积=矩形的面积﹣两个三角形的面积=84×60﹣2400×2=240(m2).答:这条小路的面积是240m2.【点评】本题考查了生活中的平移现象,先求出直角三角形的直角边的边长,再求出直角三角形的面积,用矩形的面积减去三角形的面积.24.如图,折叠长方形一边AD,点D落在BC边的点F处,BC=10cm,AB=8cm,求:(1)FC的长;(2)EF的长.【考点】矩形的性质;翻折变换(折叠问题).【专题】应用题.【分析】(1)由于△ADE翻折得到△AEF,所以可得AF=AD,则在Rt△ABF中,第一问可求解;(2)由于EF=DE,可设EF的长为x,进而在Rt△EFC中,利用勾股定理求解直角三角形即可.【解答】解:(1)由题意可得,AF=AD=10cm,在Rt△ABF中,∵AB=8,∴BF=6cm,∴FC=BC﹣BF=10﹣6=4cm.(2)由题意可得EF=DE,可设DE的长为x,则在Rt△EFC中,(8﹣x)2+42=x2,解得.【点评】本题主要考查了矩形的性质以及翻折的问题,能够熟练运用矩形的性质求解一些简答的问题.25.观察下列等式:①=+1;②=+;③=+;…,(1)请用字母表示你所发现的律:即=﹣.化简计算:(+++…+).【考点】分母有理化.【专题】规律型.【分析】(1)根据观察,发现:连续两个正整数的算术平方根的和乘以这两个算术平方根的差积是1,根据二次根式的乘法,可得答案;(2)根据上述规律,可得答案.【解答】解:(1)请用字母表示你所发现的律:即=﹣(n为正整数),故答案为:﹣;(2)原式=﹣1+﹣+﹣+…+﹣+﹣=﹣1=2﹣1.【点评】本题考查了分母有理化,认真观察等式,发现规律是解题关键.。

2023-2024学年江苏省启东市八年级下册第一次月考地理试卷(附答案)

2023-2024学年江苏省启东市八年级下册第一次月考地理试卷(附答案)

2023-2024学年江苏省启东市八年级下学期第一次月考地理试卷第Ⅰ卷(选择题,共15分)一、单项选择题(下列各小题的选项中,只有一项是符合题意的,请将所选答案填涂在答题卡对应的题号后。

本大题包括15小题,每小题选对得1分,共15分。

)全国有66个火车站可直通香港西九龙站,极大促进了内地与香港的人员流动、经贸往来。

下图为“珠江三角洲地区示意图”,据此回答1~2题。

1.香港位于A.北温带B.广西南边C.珠江口东侧D.珠海特区南侧2.内地与香港有高铁直通,促进了A.澳门管理技术输出B.香港自然资源输出C.政治制度保持一致D.内地与香港的联系2023年10月26日,神舟十七号载人飞船发射取得圆满成功。

左图为“我国四大卫星发射中心分布示意图”,右图为“神舟十七号发射升空场景图”。

据此回答3~4题。

3.小霞同学发现场景图中的发射场周边植被稀疏、荒漠广布。

该航天发射中心位于A.酒泉B.太原C.西昌D.文昌4.影响该航天发射中心周边植被稀疏的主要因素是A.纬度位置B.海陆位置C.地形地势D.人类活动圭表是古代度量日影长度的天文仪器。

左图为“圭表模型”,其中“表”是直立于平地上测日影的标杆或石柱,“圭”是正南正北方向平放的测定表影长度的刻板。

右图为“我国四大地理区域示意图”。

据此回答5~6题。

5.在不同的节气,圭上表影长度不等的根本原因是A.天气变化B.季节变化C.地球自转D.地球公转6.由图中圭上表影方向及长度变化可知,该模型所示的圭表不一定位于我国的A.北方地区B.南方地区C.西北地区D.青藏地区十四届全国人大二次会议于2024年3月5日在北京开幕,3月11日胜利闭幕。

下图为“地球公转和二十四节气(相邻两节气间的时间约为15 天)示意图”。

据此回答7~8题。

7.人大会议开幕这天,恰逢二十四节气中的A.谷雨B.清明C.惊蛰D.雨水8.人大会议闭幕这天A.南通昼短夜长B.武汉蝉鸣蛙叫C.北京树叶茂盛D.长春日出最晚下图为“某日从极地上空观察到的光照示意图”,箭头表示地球自转方向,阴影部分表示黑夜。

八年级(下)第一次月考数学试卷

八年级(下)第一次月考数学试卷

八年级(下)第一次月考数学试卷一、选择题(每小题3分,共24分)1.(3分)下列各式中最简二次根式为()A.B.C.D.2.(3分)以下列各组线段长为边能构成直角三角形的是()A.3,4,7B.6,8,10C.4,6,8D.1,1,23.(3分)下列根式中,不能与合并的是()A.B.C.D.4.(3分)如图字母B所代表的正方形的面积是()A.12B.13C.144D.1945.(3分)下列计算正确的是()A.B.C.D.6.(3分)下列条件中,不能判定四边形ABCD是平行四边形的是()A.AB∥CD,AD=BC B.AB=CD,AD=BCC.AB∥CD,AD∥BC D.∠A=∠C,∠B=∠D7.(3分)若实数x、y满足,则x+y的值是()A.1B.C.2D.8.(3分)如图,一只蚂蚁从棱长为1的正方体纸箱的A点沿纸箱表面爬到B点,那么它所爬行的最短路线的长是()A.B.C.D.2二、填空题(每小题3分,共24分)9.(3分)=.10.(3分)比较大小:.(填“>”、“=”、“<”).11.(3分)若二次根式有意义,则x的取值范围是.12.(3分)在平行四边形ABCD中,已知对角线AC和BD相交于点O,△ABO的周长为17,AB=6,那么对角线AC+BD=.13.(3分)如图,在△ABC中,AB=AC,BC=6,高AD=4,则AB=.14.(3分)某市在“旧城改造”中计划在市内一块如图所示的三角形空地上种植某种草皮以美化环境,已知这种草皮每平方米售价a元,则购买这种草皮至少需要元.15.(3分)如果两个最简二次根式与能合并,那么a=.16.(3分)观察并分析下列数据,寻找规律:,,3,,,,…,那么第10个数据是.三、解答题(共72分)17.(12分)计算(1);(2);(3).18.(6分)一旗杆离地面6m处折断,旗杆顶部落在离旗杆底部8m处,旗杆折断之前有多高?19.(6分)如图,在▱ABCD中,对角线AC,BD相交于点O,若DO=1.5cm,AB=5cm,BC=4cm,求▱ABCD的面积.20.(6分)如图,在▱ABCD中,E、F为对角线BD上的两点,且∠DAE=∠BCF.求证:AE=CF.21.(6分)先简化,再求值:,其中x=.22.(6分)在平行四边形ABCD中,E,F分别是AB,CD的中点,求证:四边形EBFD是平行四边形.23.(6分)已知:如图,平行四边形ABCD的对角线AC、BD相交于点O,E、F是直线AC上的两点,并且AE=CF.求证:四边形BFDE是平行四边形.24.(8分)如图,正方形网格中有△ABC.若每个小方格边长均为1,请你根据所学的知识解答下列问题:(1)判断△ABC的形状,并说明理由;(2)求△ABC中BC边上的高.25.(8分)如图,四边形ABCD中,∠B=90°,AB=BC=,CD=8,AD=10.(1)求∠BCD的度数;(2)求四边形ABCD的面积.26.(8分)如图,点B,E,C,F在一条直线上,AB=DE,AC=DF,BE=CF.(1)求证:△ABC≌△DEF;(2)连接AD,求证:四边形ABED是平行四边形.。

八年级下学期第一次月考数学试卷(含参考答案)

八年级下学期第一次月考数学试卷(含参考答案)

八年级下学期第一次月考数学试卷(含参考答案)(满分150分;时间:120分钟)学校:___________班级:___________姓名:___________考号:___________第I卷(选择题共40分)一.单选题.(共10小题,每小题4分,共40分.在每小题给出的四个选项中,只有一个最符合题目要求。

1.下列各曲线是根据不同的函数绘制而成的,其中是中心对称图形的是( )2.若a<b<0,则下列条件一定成立的是( )A.ab<0B.a+b>0C.ac<bcD.a+c<b+c3.下列各式由左边到右边的变形中,是因式分解的为( )A.a2-16+3a=(a-4)(a+4)+3aB.10x2-5x=5x(2x-1)C.x2-4x+4=x(x-4)+4D.a(m+n)=am+an4.不等式x>4的解集在数轴上表示正确的是( )A. B. C. D.5.在平面直角坐标系中,已知点A的坐标为(1,4),如果将点A向右平移2个单位长度得到点A’,则点A’的坐标为( )A.(1,2)B.(1,6)C.(-1,4)D.(3,4)6.多项式12a3b-8ab2c的公因式是( )A.4a2B.4abC.2a2D.4abc7.下列多项式能用平方差公式进行因式分解的是( )A.x2-1B.x2+4C.x+9D.x2-6x8.下列多项式能直接用完全平方公式进行因式分解的是( )A.9x2-16y2B.4x2-4x+1C.x2+xy+y2D.9-3x+x29.如图,将△ABC绕点A逆时针旋转角a(0°<a<180°)得到△MDE,点B的对应点D恰好落在BC边上,若DE⊥AC,∠CAD=25,则旋转角a的度数是( )A.70°B.60°C.50°D.40°(第9题图) (第10题图)10.如图,将点A 1(1,1)向上平移1个单位,再向右平移2个单位,得到点A 2;将点A 2向上平移2个单位,再向右平移4个单位,得到点A 3;将点A 3向上平移4个单位,再向右平移8个单位,得到点A 4……按这个规律平移得到点A n ,则点A 2024的横坐标为( )A.22024B.22004-1C.22023-1D.2203+1第II 卷(非选择题 共110分)二.填空题:(每题4分,共24分)11.用适当的符号表示下列关系:a 是正数 .12.因式分解:a 2+4a= .13.若m>n ,则m -n 0(填">"或"="或"<").14.若一次函数y=kx+b 的图象如图所示,则关于x 的不等式kx+b<0的解集是 .(第14题图) (第15题图) (第16题图)15.如图,将周长为10cm 的△ABC 沿 BC 方向平移得到△DEF ,连接AD ,四边形ABFD 的周长为15cm ,则平移的距离为 cm.16.如图,长方形ABCD 中,AB=5,BC=12,点E 是BC 边上一点,连接AE ,把∠B 沿AE 折叠,使点B 落在点B’处,当△CEB'为直角三角形时,BE 的长为 .三.解答题(共10小题,86分)17.(4分)解下列不等式,并把不等式的解集在数轴上表示出来:-x -1≤3x -518.(6分)解不等式组{x -3(x -1)>11+3x 2>x -1,并写出它的所有非负整数解.19.(每题3分,共18分)因式分解:(1)8m 2n+2mn (2)-15a ³b 2+9a 2b 2-3ab 3 (3)4a 2-1(4)a 2-4ab+4b 2 (5)3x 3-12x (6)mx 2+2m 2x+m 320.(6分)先分解因式,再求值:2x(a-2)-y(2-a),其中a=2,x=1.5,y=-2.21.(6分)在如图所示的平面直角坐标系中,已知点4(1,2),B(3,1).(1)C点的坐标为.(2)将三角形ABC先向下平移4个单位,在向左平移3个单位,得到三角形A1B1C1,画出三角A1B1C1:(3)三角形A1B1C1的面积为。

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敬业学校2019—2020 学年度第二学期第一次月考八年级英语试卷时间:120分钟分值:120分第一卷 (选择题,共计85分)I. 单选题(满分15分,每小题1分)1. -_____Smiths are used to living in Shanghai now.-We hope more and more foreign friends live_____better life in China.A./ ; aB. The; anC. The; aD. /; the2. This kind of food smells _____ and sells______.A. good ; goodB. well; goodC. good ; wellD. well; good3. -Do you find yourself a rude person? -not. I always have good manners.A.ProbablyB. UsuallyC. GenerallyD. Certainly4. -_________you _______ the film Lost in Thailand before?-Yes, I ________ it with my family last year. We all think it’s interesting.A. Did, see; sawB. Have, seen; sawC. Have, seen; have seenD. Do, see; saw5. While my little daughter was learning to walk, I often saw her _____.A. fall downB. fell downC. was falling downD. falls down6. -I think Cindy is _____ student in our class. -I don’t think so. Linda is _____ than her.A. smarter; smarterB. the smartest; smarterC. the smartest; the smartestD. smarter; the smartest7. Kate is _____ girl. She’s very happy at school.A. a eighteen-year-oldB. an eighteen-year-oldC. a eighteen-years-oldD. an eighteen-years-old8. -Which sport do you like better, skiing or skating?-Both. I think _____ of them is interesting.A. eitherB. noneC. neitherD. all9. _____ everyone with politeness even those who are very rude to you, not because they are nice, but because you are.A. TreatB. TreatingC. TreatedD. To treat10.-I’d like to spend our holiday in the village, because the environment here is a lot better than______ in a big city.-I agree with you.A. itB. thisC. oneD. that11. Yesterday, Lily offered _____ my brother with his English, But I didn’t _____ her.A. to help; agree toB. helping; agree toC. to help; agree withD. helping; agree with12. – Is Jim at home? – No, he _____ a poor area to be a volunteer.A. has been toB. has been inC. has gone toD. has gone in13. I’m ____ tired, can you give me _____ time to have a rest?A. a bit ; a bitB. a little ; a bitC. a bit; a littleD. a bit; a little of14. – I called you yesterday evening. But nobody answered.– Oh, sorry. Maybe I in the bathroom at that time.A.take a showerB. took a showerC. was taking a showerD. have taken a shower15. —Rose isn’t here today. Is she ill?—_____. I saw her at the doctor’s this morning.A. I hope soB. I don’t mindC. I am afraid soD. I don’t think soII. 完形填空(满分20 分,每小题1分)AHow much do you learn about the solar system?The following passage(短文)will tell you.The earth is a planet.It as well as seven 16 planets goes around the sun. We 17 the eight planets and the sun the solar system. The first planet, 18 the sun, is Mercury(水星). It is 58 million 19 from the sun. Venus(金星) is the second planet next to the sun, and 20 planet, the earth, is the third. It is 150 million kilometers from the sun.Jupiter(木星), Saturn(土星), Neptune(海王星) and Uranus(天王星) are all 21 than the earth, 22 Venus, Mars and Mercury are smaller than the earth.Animals, trees and humans can only 23 on the earth-the other planets in our solar system do not 24 air or water. Do any planets in other galaxies have 25 ? We don’t know about it.16. A.else B.others C.other D.another17. A.know B.call C.take D.pick18. A.next to B.before C.out of D.in front of19. A.years B.hours C.metres D.kilometres20. A.our B.their C.her D.his21. A.lighter B.bigger C.shorter D.safer22. A.but B.or C.till D.so23. A.knock B.try C.live nd24. A.have B.bring C.fill D.join25. A.planet B.system C.galaxy D.lifeBFor Pineda, it was a long way to succeed.His story began in EL Salvador, where he was born with something wrong with his mouth. He had great 26 in speaking. At the age of 2, his family’s house burned down. Pineda was hurt 27 , and his legs needed to be cut. His mother died when he was 8, and he 28 years on thestreets before he was taken in by an orphanage (孤儿院).Finally, at the orphanage, Pineda began to receive support and encouragement. He taught himself to play the guitar. He began his 29 with other musicians. Then the group went to Chicago, where Pineda, then 18, caught the attention 30 many people, who wondered what they could do to help him.A hospital offered him free medical care. A rich man agreed to 31 for Pineda’s tickets to and from EL Salvador.When he was in the hospital, Pineda began writing music, and wondered if he might be able to record 32 own album (音乐专辑). Soon with the help of a musician, “The Sound of Gratitude (感激)” was born. On October 15th, Pineda went to a Chicago club to 33 his new songs to strangers, and to the friends who had helped him come so far.It was amazing that Pineda had come into such a good 34 , after having so many years of hardship. “We have a 35 in EI Salvador, ‘Suffer (受难) first, then enjoy.’ I guess that’s what’s happening,” he said.26.A. progress B. difficulty C. development D. interest27.A. politely B. wisely C. simply D. seriously28.A. spent B. used C. cost D. took29.A. speech B. education C. performance D. suggestion30.A. about B. with C. of D. in31.A. ask B. look C. pay D. wait32.A. his B. my C. her D. your33.A. sing B. practice C. learn D. play34.A. lucky B. luck C. luckily D. luckly35.A. meeting B. training C. saying D. meaningIII. 阅读理解(满分50分,每小题2分)AThe novel coronavirus pneumonia(NCP) has already made tens of thousands of people sick. Where did the virus come from? Scientists say it probably came from bats.Bats can carry and transmit(传播) more than 60 viruses that can infect(传染) humans, Live Science noted. They include the world’s deadliest viruses, such as Ebola(埃博拉病毒) and HIV. Due to their strong immune systems (免疫系统) , bats are able to host these viruses and not get sick. At the same time, the viruses keep developing inside the bats to create new variants(变体). These variants can then infect new hosts, such as other wild animals.Pangolins (穿山甲), for example, might be an intermediate host (中间宿主) for NCP, according to a recent study by Chinese scientists. This means that bats might have given the virus to pangolins, with pangolins then spreading(传播) it to humans.Wild animals like snakes, hedgehogs(刺猬) and bamboo rats also carry different kinds of viruses. But since they live in the wild, there should be little chance for humans to come into contact with them and get infected- unless the animals are eaten or used to make animal products. When people hunt, buy and eat wild animals, they can introduce viruses to the rest of the population.But this doesn’t mean that we should kill wild animals. Each species has a role in the ecosystem(生态系统) and all of them are important in keeping a natural ecological balance. Thelesson we can learn from disease outbreaks is to respect and protect animals and to live in harmony with them instead of hunting, killing, or eating them.36. Scientists say NCP probably came from.A. pangolinsB. batsC. snakesD. bamboo rats37. Why can bats host many viruses without getting sick?A. Because these viruses are not deadly.B. Because they have strong immune system.C. Because the viruses are kept in balance.D. Because they can spread the viruses to other animals.38. The underlined word “harmony” probably means.A. 隔离B. 和谐C. 伤害D. 集中39. According to the story, what lesson should humans learn?A. Research more about wild animals.B. Exercise regularly to stay healthy.C. Stop keeping animals as pets.D. Don’t buy or eat wild animals.40. The passage is probably from.A. A newspaperB. A storybookC. An advertisementD. An introduction (说明书)BWhat do you call a school with no tests, no grades, no classes, and no teachers? Students of the Met School and their parents think it to be the best school in the world.The school is in Rhode Island, USA. Dennis Littky opened it in 1996. He was fired(解雇)from two other schools, because many parents of the school students were happy with his unusual ideas. The school takes poor kids who are failing at schools. Nearly everybody has already given up these students and their parents want to try anything. The Met School gives Littky a great place to try out his new ideas.“The word that most kids use when they talk about high school is ‘boring’,” says Littky. “But no one would say the Met was boring.” Advisors(指导老师) (not teachers) work with small groups of students for four years. Students spend almost half of their school time learning real-life skills , such as working for business, spending time with government people, and helping teach younger children. Instead of tests, the students give shows about their work outside school.In fact, students work harder here than in other schools. All the students from the Met graduate and can choose to go to a good university . Now, Bill Gates is starting schools like this one around the USA.41. ______ think(s) that the Met School is the best.A. The headmaster of the Met School.B. The student outside the Met School.C. All the students and their parents from the Met School.D. The teachers at the Met School.42. What do most high school students think of normal school?A.interesting.B.relaxing.C.uninteresting.D. exciting43.What does the underlined word “graduate” in the last paragraph mean in Chinese?A. 毕业B. 离开C. 结束D. 搬离44. What do the students do at the Met School?A. They spend all their school time playing.B. They keep giving shows about their school.C. They only learn from working for business.D. Almost half of the time, they learn real-life skills.45. According to the passage, which of the following is TRUE?A. Life at the Met School is very easy because there are no tests.B. Teachers at the Met School give students much more homework than at normal school.C. Students can choose to go to a good university.D. Students at the Met School s spend all their time working outside school.CSusan is my sister. She is afraid of heights (恐高). She always feels sick when she stands at high places. So she hardly goes to mountains or tall buildings.While we were staying in New York last year, she had a terrible toothache. She could not eat ad sleep well and became very annoyed. One of our friends there recommended (推荐) us a dentist, and we went to see him at once.It was about nine o’clock in the morning when we arrived at the dentist’s. It was on the 14th floor of a tall building. Susan stopped and wouldn’t like to go into the dentist’s office at first, but she had no choice.Entering the office, Susan was more terrified, because she found that two of the office walls were made of glass completely. And the sun shone into the office brightly. I saw that her face became so pale (苍白的) that she couldn’t say a word. Then I held her arms and helped her go to the chair.Susan sat rigidly (僵硬地) in the examination chair, catching its sides tightly. When the dentist came in, he asked Susan, “Are you always so nervous like this?”“It’s just because I’m not used to being up this high,” Susan replied, with her eyes closed.“Oh, I’m sorry,” the dentist said. Then he lowered Susan’s chair six inches.46. According to the passage, we can infer that .A. Susan can’t be a mountain climberB. Susan likes swimmingC. Susan’s company is on the 20th floor of a tall buildingD. Susan sometimes goes out for hiking47. Why did Susan go to the dentist’s?A. Her friends took her there.B. She had a toothache and couldn’t eat.C. She was in New York.D. She didn’t want to eat and couldn’t sleep well.48. When Susan_______at the dentist’s, he face became so pale.A. found the sun shine brightlyB. saw there were two glass wallsC. sat down in a chairD. couldn’t say a word49. The dentist’s action in lowering Susan’s chair six inches showed that .A. he was not a caring personB. he was humorousC. he kn ew how to solve Susan’s problemD. he didn’t understand what Susan said50. Which of the following is the best title of the passage?A. A Kind DentistB. Susan’s LifeC. A Funny ExperienceD. My SisterDA principal(校长) decided to honor (给…荣誉) the teachers in his school to show his appreciation (感激) for their hard work. He told them how they made a differences in their jobs. Then he gave each of them a blue ribbon (缎带) that read , “ Who I am Makes a Difference.” One of the teachers wanted to take this into her students. One day the teacher noticed that a boy in her class was unhappy. She went to him and asked him the reason. The boy told her that his father had been worried about the job and often punished him for some small things. Hearing what he said, the teacher decided to give him the ribbon to cheer him up. She said, “ Dear boy, what your father has done doesn’t mean the lack of love for you. He needs you understanding. You’ve been a kind boy. Here’s a ribbon for you. Would you like to take this ribbon and pass it on? Let’s keep this ceremony going and find out how it affects people.”That night the boy sat beside his father and said, “Dad, today my teacher gave me a blue ribbon for being kind and asked me to find somebody else to hon or. I’d like to give the ribbon to you. I want to let you know how deeply I admire you and how much you mean to me. I love you!” Holding the ribbon, the father’s eyes were filled with tears.根据短文内容,判断正误(T or F)51. All the teachers took the principal’s ide a into their students.52. The teacher gave the ribbon to the boy because she wanted to cheer him up.53. With the teacher’s help, the boy showed his admiration and love for his father.54. The father wasn’t surprised or moved at all when he received the ribbon from his son.55. From the passage, we know the boy’s father doesn’t like the boy at all.E根据对话内容,从方框中选择恰当的句子。

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