8+4×2x÷504吨50千克等于多少吨少

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八年级各科期末试卷及答案
八年级各科期末试卷及答案
导读: 八年级各科期末试卷及答案(共5篇)八年级上册期末数学试卷及答案(2015)八年级数学试卷一、选择题(本大题共10题,每小题3分,共30分)311x2?13xy1 在、、、、、?3x中,分式的个数有(
)2x?yx2?A、2个
D、5个 2 下列“...
八年级各科期末试卷及答案(一)八年级上册期末数学试卷及答案(2015)
八年级数学试卷
一、选择题(本大题共10题,每小题3分,共30分)
311x2?13xy
1.在、、、、、?3x中,分式的个数有(
D、5个 2.下列“表情”中属于轴对称图形的是 (
3.等腰三角形的顶角为80°,则它的底角的度数是(
D.80° 4.如图,△ABC中,AB=AC,EB=EC,则由“SSS”可以判定(
A.△ABD≌△ACD
B.△ABE≌△ACE
D.以上答案都不对
C.△BDE≌△CDE
5.下列运算不正确的是 (
A、 x·x= x
B、 (x)= x
C、 x+x=2x
D、 (-2x)=-8x 6.下列每组数分别是三根小棒的长度,用它们能摆成三角形的是(
A、3cm,4cm,8cm
B、8cm,7cm,15cm
C、13cm,12cm,20cm
C、5cm,5cm,11cm 7.下列各式由左边到右边的变形中,是分解因式的为(
A.a(x?y)?ax?ay
10x?5x?5x(2x?1)
x?4x?4?x(x?4)?4 B.
2x?16?3x?(x?4)(x?4)?3x D.
8.计算3a.2b的值为(
D.5ab 9.若分式
有意义,则x的取值范围是(
10.小张和小李同时从学校出发,步行15千米去县城购买书籍,小张比小李每小时多走1千米,结果比小李早到半小时,两位同学每小时各走多少千米?设小李每小时走x千米,依题意,得到的方程:
(B)xx?12 (A)x?1
二、填空题(本大题共8题,每小题3分, 共24分)
11.已知点A(m,3)与点B(2,n+1)关于y轴对称,则m=______,n=________。
012.计算:?3?(??1)?4?___________________。
13.如果一个正多边形的内角和是900°,则这个正多边形是正______边形。
14.如图,已知AC=DB,要使△ABC≌△DCB,则需要补充的条件为_____________填一个即可)。 15.若x+kx+81是一个完全平方式,则k的值是_______。
16.如图,在△ABC中,∠C=90°,∠A的平分线交BC于D ,DC=4cm ,则点D到斜边AB的距离为_____________cm。 17.从镜子中看到对面电子钟示数如
图所示,这时的实际时间应该是______。
18.已知等腰三角形的两边长分别为2cm,4cm则其周长为______________。 三、解答题(本大题共7题
共46分) 19.计算:(本题6分,每小题3分)
(1)(-a)b?2ab
(2)(x?3)?(x?2)(x?2)?2x
20.因式分解:(本题6分,每小题3分)
3x?12xa?4ab?4b
21.(本题5分)如图,在Rt△ABC中,∠B=90°,ED是AC的垂直平分线,交AC于点D,交BC于点E.已知∠BAE=16°,求∠C的度数?
22.(本题5分)画出△ABC关于x轴对称的图形△A1B1C1,并指出△A1B1C1的顶点坐标。 .
a?1其中a=3。 23.(本题8分)先化简,再求值:a?2a?1
24.(本题8分)某校为了丰富学生的校园生活,准备购进一批篮球和足球,其中篮球的单价比足球的单价多40元,用1500元购进的篮球个数与900元购进的足球个数相同,篮球与足球的单价各是多少元?
25.(本题8分)已知,如图,点B、F、C、E在同一直线上,AC、DF相交于点G,AB⊥BE,垂足为B,DE⊥BE,垂足为E,且AB=DE,BF=CE。
求证:(1)△ABC≌△DEF;
(2)GF=GC。
一、选择题
10.B 二、填空题
11.m=-2,n=2
14,AB=DC或∠ACB=∠DBC
15.±18 16.4
18.10cm 三、解答题
19.计算:(本题6分,每小题3分)
(2)(x?3)2?(x?2)(x?2)?2x2
20.因式分解:(本题6分,每小题3分)(1)3x?12x3
=3x(1+2x)(1-2x)
2 21.解:∵ED是AC的垂直平分线
∴∠EAC=∠C
在Rt△ABC中,∠B=90°
∴∠EAC+∠C=90°
即∠EAC+∠BAE+∠C=90°
∠C=37° 22.图略
5八年级各科期末试卷及答案(二)2014新人教版八年级下册数学期末试卷及答案
2014年八年级数学(下)
期末调研检测试卷(含答案)
一、选择题(本题共10小题,满分共30分)
1.二次根式2、12 、30 x+2 、40x2、x2?y2中,最简二次根
x的取值范围为(
). A、x≥2
C、x≥2或x≠3
D、x≥2且x≠3
3.如果下列各组数是三角形的三边,那么不能组成直角三角形的一组数是(
A.7,24,25 ,54,7,822
C.3,4, 5
4、在四边形ABCD中,O是对角线的交点,能判定这个四边形是正方形的是(
(A)AC=BD,AB∥CD,AB=CD
(B)AD∥BC,∠A=∠C
(C)AO=BO=CO=DO,AC⊥BD
(D)AO=CO,BO=DO,AB=BC
5、如图,在平行四边形ABCD中,∠B=80°,AE平分∠BAD交BC于点E,CF∥AE交AE于点F,则∠1=(
6、表示一次函数y=mx+n与正比例函数y=mnx(m、n是常数且mn≠0)图象是(
7.如图所示,函数y1?x和y2?
时,x的取值范围是(
) 14x?的图象相交于(-1,1),(2,2)两点.当y1?y233
B.—1<x<2
D. x<-1或x>2
28、 在方差公式S?221x1?x?x2?x???xn?xn????????中,下列说法不正确的是2
A. n是样本的容量
B. xn是样本个体 C. x是样本平均数
D. S是样本方差
9、多多班长统计去年1~8月“书香校园”活动中全班同学的课外阅读数量(单位:本),绘制了如图折线统计图,下列说法正确的是(
(A)极差是47
(B)众数是42
(C)中位数是58
(D)每月阅读数量超过40的有4个月【八年级各科期末试卷及答案】
10、如图,在△ABC中,AB=3,AC=4,BC=5,P为边BC上一动点,PE⊥AB于E,PF⊥AC于F,M为EF中点,则AM的最小值为【
EBP二、填空题(本题共10小题,满分共30分)
12.边长为6的大正方形中有两个小正方形,若两个小正方形的面积分别为S1,S2,则S1+S2的值为(
13. 平行四边形ABCD的周长为20cm,对角线AC、BD相交于点O,若△BOC的周长比△AOB的周长大2cm,则CD=
14.在直角三角形ABC中,∠C=90°,CD是AB边上的中线,∠A=30°,AC=5 ,则△ADC的周长为
15、如图,平行四边形ABCD的两条对角线AC、BD相交于点O,AB= 5
,AC=6,DB=8 则四边形ABCD是的周长为
16.在矩形ABCD中,对角线AC、BD相交于点O,若∠AOB=60°,AC=10,则AB=
17. 某一次函数的图象经过点(?1,3),且函数y随x的增大而减小,请你写出一个符合条件的函数解析式______________________.
18.)某市2007年5月份某一周的日最高气温(单位:℃)分别为:25,28,30,29,31,32,28,这周的日最高气温的平均值是_______
19.为备战日在绍兴举行的第三届全国皮划艇马拉松赛,甲、乙运动员进行了艰苦的训练,他们在相同条件下各10次划艇成绩的平均数相同,方差分别为0.23,0.20,则成绩较为稳定的是
(选填“甲”或“乙)
20.如图,边长为1的菱形ABCD中,∠DAB=60°.连结对角线AC,以AC为边作第二个菱形ACEF,使∠FAC=60°.连结AE,再以AE为边作第三个菱形AEGH使∠HAE=60°,,按此规律所作的第n个菱形的边长是
三.解答题:
x2?2x?19?x9?x21. (7分)已知,且x为偶数,求(1?x)的值 ?2x?6x?1x?6
22. (7分)在△ABC中,∠C=30°,AC=4cm,AB=3cm,求BC的长.
23. (9分) 如图,在直角梯形ABCD中,AD∥BC,∠B=90°,AG∥CD交BC于点G,点E、F分别为AG、CD的中点,连接DE、FG.
(1)求证:四边形DEGF是平行四边形;
(2)当点G是BC的中点时,求证:四边形DEGF是菱形.
24. (9分) 小颖和小亮上山游玩,小颖乘会缆车,小亮步行,两人相约在山顶的缆车终
点会合.已知小亮行走到缆车终点的路程是缆车到山顶的线路长的2倍,小颖在小亮出发后50 min才乘上缆车,缆车的平均速度为180 m/min.设小亮出发x min后行走的路程为y m.图中的折线表示小亮在整个行走过程中y与x的函数关系.
⑴小亮行走的总路程是____________㎝,他途中休息了________min.
⑵①当50≤x≤80时,求y与x的函数关系式;
②当小颖到达缆车终点为时,小亮离缆车终点的路程是多少?
八年级各科期末试卷及答案(三)人教版八年级下语文期末试卷附答案
八年级下学期语文期末试卷
一、知识的积累与运用。(30分)
1.选出下面加粗字音、形完全正确的一项是(
A.烂漫(màn)
诘责(jié)
文绉绉(zōu)
广袤无垠(mào)
B.禁锢(gù)
匿名(nì)
眷念(juàn)
冥思暇想(xiá)
C.稽首(qǐ)
荷戟(jǐ)
旸谷(yáng)
鞺鞺鞳鞳(tāng)
D.叱咄(duō)
骈死(pián)
缊袍(wēn)
负箧曳屣(xiá)
2.下列词语中,没有错别字的一项是(
3.选出下面的解释完全正确的一项是(
A.油光可鉴(鉴别)
不逊:无礼
匿名(隐藏)
B.不可名状(说出)
睥睨:眼睛斜着看
旸谷(日出)
C.脂粉奁(盒子)
器宇:气概、风度
诘责(谈论)
D.无可置疑(怀疑)
禁锢:束缚,限制
下午霁(阴天)
4.下列各句中,加粗的成语使用恰当的一项是(
A.中国足球队首次征战世界杯,各种新闻媒体连篇累牍,竞相报道,佳作纷呈。
B.西部大开发将改变“孔雀东南飞”的状况,使西部地区的潜在优势有了出人头地的一天。
C.那教练是个减肥专家,他的理论让小李茅塞顿开。
D.有的学生无视学校金科玉律,迷恋网上游戏聊天,实在令人担忧。
5.根据课文填空或理解性默写。(10分)
(1)在乌云和大海之间,海燕_____________,_____________。
(2)《酬乐天扬州初逢席上见赠》的颈联是
(3)山河破碎风飘絮,_____________。
(4)《水调歌头》中写出普天下离人心愿的句子是:“_____________,_____________。”
(5)《山坡羊·潼关怀古》曲中作者对以往历史所作的概括与评判的句子是_____________。
(6)王安石的《登飞来峰》里与杜甫的“会当凌绝顶,一览众山小”有异曲同工之妙的诗句是____________________,
6.分别仿照画波浪线的句子各写一句话,要求语意相关,句式整齐。(4分)
拥有是美丽的,。 这样灿烂的篇章?
7.阅读下列古诗句,探究“子规(杜鹃)”在古诗文中的文化内涵。(3分)
材料一:可堪孤馆闭春寒,杜鹃声里斜阳暮。(秦观《踏莎行》)
材料二:子规夜半犹啼血,不信东风唤不回。(王令《送春》)
材料三:杨花落尽子规啼,闻道龙标过五溪。(李白《闻王昌龄左迁龙标遥有此寄》)
8..阅读一定数量的文学名著是语文学习的基本要求,下面请你做一个简要的读书札记。(5分)
印象深刻的人物:
阅读启示:
二、阅读理解。(40分)
(一)阅读下文,完成9—13题(12分)
世有伯乐,然后有千里马。千里马常有,而伯乐不常有。故虽有名马,祗辱于奴隶人
之手,骈死于槽枥之间,不以千里称也。
马之千里者,一食或尽粟一石,食马者不知其能千里而食也。是马也,虽有千里之能,食不饱,力不足,才美不外见,且欲与常马等不可得,安求其能千里也?
策之不以其道,食之不能尽其材,鸣之而不能通其意,执策而临之,曰:“天下无马!”呜呼!其真无马邪?其真不知马也。
9.下面句子中加点的词意思相同的一项是(
A.马之千里者。
执策而临之。 ..
B.策之不以其道。
道狭草木长。 ..
C.一食或尽粟一石。
或异二者之为。 ..【八年级各科期末试卷及答案】
D.食之不能尽其材。
不知其能千里而食也。 ..
10.从文中选句填空,选句中要包含例句中加点的词,且两词用法不能相同(2分) 例:不知其能千里而食也。 .
11.翻译下面的句子。(4分)
(1)祗辱于奴隶人之手,骈死于槽枥之间。
(2)且欲与常马等不可得。
12.请用一个成语概括千里马的处境或遭遇。(2分)
成语:______________________________________
13.请选择一个角度,简要谈谈本文给你的启发。(2分)
(二)阅读下文,完成14—17问题。(14分)
(1)突然,客人惊奇地屏住了呼吸,只见面前的小个子那对浓似灌木丛的眉毛下面,
一对灰色的眼睛射出一道黑豹似的日光,虽然每个见过托尔斯泰的人都谈过这种犀利目光,但再好的图片都没法加以反映。这道目光就像一把成锃亮的钢刀刺了过来,又稳又准,击中要害。令你无法动弹,无法躲避。仿佛被催眠术控制住了,你只好乖乖地忍受这种目光的探寻,任何俺饰都抵挡不住。它像枪弹穿透了伪装的甲胄,它像金刚刀切开了玻璃。在这种入木三分的审视之下,谁都没法遮遮掩掩。——对此,屠格涅夫和高尔基等上百个人都作过无可置疑的描述。
(2)这种穿透心灵的审视仅仅持续了一秒钟,接着便刀剑入鞘,代之以柔和的目光与和蔼的笑容。虽然嘴角紧闭,没有变化,但那对眼睛却能满含粲然笑意,犹如神奇的星光。而在优美动人的音乐影响下,它们可以像村妇那样热泪涟涟。精神上感到满足自在时,它们可以闪闪发光,转眼又因忧郁而黯然失色,罩上阴云,顿生凄凉,显得麻木不仁,神秘莫测。它们可以变得冷酷锐利,可以像手术刀、像 x射线那样揭开隐藏的秘密,不一会儿意趣盎然地涌出好奇的神色。这是出现人类面部最富感情的一对眼睛。可以抒发各种各样的感情。高尔基对它们恰如其分的描述,说出了我们的心里话:“托尔斯泰这对眼睛里有一百只眼珠。”
14、用简洁的语言概括出这两段文字的主要内容。(4分)
15、第(1)段中画横线的句子运用了------、------等修辞手法,它有什么表达作用?(4分)
16、第(2)段中引用高尔基的话,其作用是什么?(3分)
17、作者为什么写自己心中伟人平庸粗鄙的一面?(3分)
(三)阅读下文,完成18—22题。(14分)
母亲患了老年痴呆症,失去了记忆。我赶回老家去看她时,她[甲]地坐在藤椅里,依然那么[乙],但却不知我从哪里来,不知我来干什么,甚至不知我是谁。不再谈她的往事,不再谈我的童年,只是对着我笑,笑得我泪流满面。
微风吹乱了母亲的满头白发,如同故乡的天空飘满愁絮,,,,
坐在面前的母亲忘却了她给我的那份爱,但故乡的天空不会忘记:是母亲那一双勤劳的手为我打开民间文学宝库,给我送来月夜浓郁的诗情。
童年苦涩,夏夜却是美妙的。暑热散去了,星星出齐了,月亮升起来,柔和的月色洒满了我们的篱笆小院,这是孩子眼里最美的时辰。母亲忙完了一天的活计,洗完澡,换了一件白布褂子,在院中的干草堆旁,搂着我,唱起了歌谣:
“月亮出来亮堂堂,打开楼门洗衣裳,洗得白白的,晒得脆脆的。”
“月姥娘,八丈高,骑白马,挎腰刀,,,,”
“月儿弯弯像小船,带俺娘俩去云南,飞了千里万里路,凤凰落在梧桐树。凤凰凤凰一摆头,先盖瓦屋后盖楼。东楼西楼都盖上,再盖南楼遮太阳。” 她用甜甜的嗓音深情地为我吟唱,轻轻的,像三月的和风、小溪的流水。小院立即飘满她那芳香的音韵。
那时,我们过着清贫的日子,但
。黄河留给家乡的故道不长五谷,却疯长歌谣。母亲天资聪颖,一听就会。再加上我的外婆是唱民歌的能手,我的父亲是唱
莲花落的民间艺人。母亲把故乡给予的爱,亲人给予的爱,融为伟大的母爱,伴着月光给了我,让一颗混沌的童心豁然开朗。
母亲唱累了就给我讲嫦娥奔月的故事,讲牛郎织女天河相会的故事,,,,高深莫测的夜空竟是个神话的世界。明月已至中天,母亲沉浸在如水的月色里,像一尊玉石雕像。沉静片刻,她又吟唱起了幽默风趣的童谣,把我的思绪从天上引到人间:
“小红孩,上南山,割荆草,编箔篮,筛大米,做干饭。小狗吃,小猫看,急得老鼠啃锅沿。”
“小老鼠,上灯台,偷油喝,下不来——老鼠老鼠你别急,抱个狸猫来哄你。” “毛娃哭,住瓦屋。毛娃笑,坐花轿。毛娃醒,吃油饼。毛娃睡,盖花被。毛娃走,唤花狗,花狗伸着花舌头。”
民歌童谣唱过了,我还不想睡,就缠着她给我说谜语,让我猜。母亲说:“仔细听着:麻屋子,红帐子,里边睡个白胖子——是什么呀?”
我问:“朝哪里猜?”
母亲说:“朝吃的猜。”
我歪着头想了一会硬是解不开。母亲笑着说:“你真笨,这是咱种的花生呀。” 母亲不识字,却是我的启蒙老师。她在月光下唱的那些明快、流畅、含蓄、深刻的民歌童谣,使我展开了想象的翅膀,飞向诗歌的王国。
母亲失去了记忆,而我心中却永远珍藏着那一轮明月,,,,
18.用恰当的词语填空(2分)
(1)将“安详”、“慈祥”填入文中的甲、乙处:
] 地坐在藤椅里,依然那么[乙
19.根据文章内容,在下面空格中填入恰当的文字(每空填一字)(2分)
月光下,母亲为我
唱 民 歌 → □□□ → □□□ →说 谜 语
20.根据文意,将文中的句子填写完整。(2分)
那时,我们过着清贫的日子,但
21.文中画线句运用了
的修辞方法,表达效果是
。文中运用同样修辞方法的另一个句子是
22.对标题“月光启蒙”理解最贴切的一项是(
A.月光下,母亲用甜甜的嗓音深情吟唱,让我初步了解了许多民歌童谣。
B.在故乡明亮的月光下,母亲教会我要坚强地面对生活中的磨难。
C.在故乡的天空下,月光启迪我领悟了浓郁的诗情和生活的真谛。
D.明月星光下,母亲用智慧和才华陪伴我的童年,启迪我的想象和诗情。
三、作文。(50分)
题目:生活中充满_____________
要求:1.先把题目补充完整; 2.文体自定,诗歌除外,不少于600字;3.有真情实感,力求有创意。
八年级下学期语文期末考试卷答案
一(30分)1--4(每小题2分,共8分) C
5(每空1分,共10分)(1)像黑色的闪电,在高傲地飞翔
(2)沉舟侧畔千帆过,病树前头万木春
(3)身世浮沉雨打萍
(4)但愿人长久,千里共婵娟
(5)兴,百姓苦;亡,百姓苦!
(6)不畏浮云遮望眼,自缘身在最高层
6、(每句2分,共4分)示例:失去了甘霖,你还会有露珠的滋润
司马迁不失去个人的名誉和利益,哪里会孕育出《史记》这样辉煌的巨著
7、(3分)古诗中子规象征哀怨、凄凉或思归的情思。
8、(5分)略
(共40分)
9、(2分)D
10、(2分)其真无马邪?
11、(4分)(1)只能在仆役的手下受屈辱,和普通的马一起死在马厩里。
(2)想要跟普通的马得到同等的待遇尚且办不到。
12、(2分) 怀才不遇(或“英雄无用武之地”等)。
13、(2分)略。(可谈埋没、摧残人才的现象及危害;可谈发现、选拔、任用人才的方法;可谈重用人才,使其才美外现的重要意义等,也可选择其他角度,符合题意即可)
14、(4分)(1)描写了托尔斯泰目光的锐利
(2)描写了托尔斯泰的眼睛蕴含着丰富的感情。
15、 (4分)比喻、夸张,(2分)作用:突出地表现了托尔斯泰目光的敏锐。(2分)
16、(3分) 从修辞方法上看是夸张,但它恰恰很好地道出了托尔斯泰那种把万事万物尽收眼底的全方位洞察力。
17、(3分)写托尔斯泰外貌平庸、普通的一面,不仅是对托尔斯泰肖像真实的刻画,同时也揭示了他是俄国人民大众的一员;写他面容粗鄙、丑陋的一面,实际上是反衬了他眼睛的无比精美。托尔斯泰就是这么一个矛盾的人生追求、人生态度与自己的阶级和身份的矛盾统一,以及他本身的思想也是矛盾统一的。
18、(2分)甲:安详
19、(2分)讲故事
20、(2分)精神生活是丰富的
21.比喻(1分)形象生动地写出了母亲嗓音的轻柔、甜美(2分)
微风吹乱了母亲的满头白发,如同故乡的天空飘满愁絮,,,,(或:“月儿弯弯像小船”、“此时明月已至中天,母亲沉浸在如水的月色里,像一尊玉石雕像”)(2分)
22.(3分)D(3分)
A(1分)八年级各科期末试卷及答案(四)初二数学下册期末试题及答案
第二学期期末考试 八 年 级 数 学 试 题
(考试时间:120分钟,满分150分)
一、选择题(本大题共有8小题,每小题5分,共40分) 1. 若a>b,则下列式子正确的是(
) A.a-4>b-3
C.3+2a>3+2b
D.—3a>—3b 2.不等式组??2x?1?0
3.若将a?bab
a,b均为正数)中的字母a,b的值分别扩大原来的3倍,则分式的值( A.扩大为原来的3倍
B.缩小为原来的1
D.缩小为原来的1
4.若两个相似多边形的面积之比为1∶3,则对应边的比为(
) A.1∶3
D.3:1 5. 以下说法正确的是(
A.在同一年出生的400人中至少有两人的生日相同 B.一个游戏的中奖率是1%,买100张奖券,一定会中奖
C.一副扑克牌中,随意抽取一张是红桃K,这是必然事件
D.一个袋中装有3个红球、5个白球,任意摸出一个球是红球的概率是35
6.若关于x的方程
?0有增根,则m的值是(
D.-1 7.函数y?kx?1与函数y?k
在同一坐标系中的大致图象是下图中的
8.下列命题①同旁内角互补,两直线平行;②全等三角形的周长相等; ③直角都相等;④等边对等角。它们的逆命题是真命题的个数是(
) ...A.1个
D.4个 二、填空题(本大题共有10小题,每小题3分,共30分)
9.在比例尺1∶8000000的地图上,量得太原到北京的距离为6.4厘米,则太原到北京的实际距离为
10.“同位角相等”的逆命题是______________________。
x2?111.当x=的值为零。
12.若反比例函数y?13.不等式
kk的图象经过点(-2,3),则y?的图象在象限。 xx
?8?1?x的负整数解有
14.已知线段AB=100m,C是线段AB的黄金分割点,则线段AC的长约为(结果保留一位小数)
15.如图,在△ABC中,点D在 AB上,请再添加一个适当的条件,使△ADC与△ACB相似,那么要添加的条件是
.(只填一个即可)
???0,则的值为
17.两个相似三角形最长边分别为10cm和25cm,它们的周长之差为60cm,则这两个三角形的周长分别是
。 18.将x?
代入反比例函数y??中,所得函数值记为y1,又将x?y1?1代入函数中,3x
所得函数值记为y2,再将x?y2?1代入函数中,所得函数值记为y3,,,,,如此继续下去,
三、解答题(本大题共有8小题,共80分,解答时应写出必要的文字说明、证明过程或演算步骤)
1a?1x2?4x?2(a?)??219.(本题10分)计算:(1)
aax?4x?4x?4x?4
?5x?2?3?x?1?
20.解不等式组?1(本题8分) 3,并求出其整数解。
x?1?7?x?2?2
21.(本题10分)请把下列证明过程补充完整: 已知:如图,DE∥BC,BE平分∠ABC. 求证:∠1=∠3.
证明:因为BE平分∠ABC(已知),
所以∠1=______
又因为DE∥BC(已知),
所以∠2=_____(
所以∠1=∠3(
22.(本题8分) 四张扑克牌的牌面如图①所示,将扑克牌洗均匀后,如图②背面朝上放置在桌面上。
(1)若随机抽取一张扑克牌,则牌面数字恰好为5的概率是_____________;
(2)规定游戏规则如下:若同时随机抽取两张扑克牌,抽到两张牌的牌面数字之和是
偶数为胜;反之,则为负。你认为这个游戏是否公平?请说明理由。
23.(本题10分).A、B两地的距离是80千米,一辆巴士从A地驶出3小时后,一辆轿车也从A地出发,它的速度是巴士的3倍,已知轿车比巴士早20分钟到达B地,试求两车的速度。 24.(本题10分)小强想利用树影测树高,他在某一时刻测得直立的标杆长0.8m,其影长为1m,同时测树影时因树靠近某建筑物,影子不全落在地上,有一部分落在墙上如图,若此时树在地面上的影长为5.5m,在墙上的影长为1.5m,求树高
25.(本题12分)一块直角三角形木块的面积为1.5m2,直角边AB长1.5m,想要把它加工成一个面积尽可能大的正方形桌面,甲、乙两人的加工方法分别如图①、图②所示。你能用所学知识说明谁的加工方法更符合要求吗?
26.(本题12分)9月28日,我国神舟七号载人飞船顺利返回地面,下面是“神舟”七号飞船返回舱返回过程中的相关记录:从返回舱制动点火至减速伞打开期间,返回舱距离地面的高度与时间呈二次函数关系,减速伞打开后,返回舱距离地面的高度与时间呈一次函数关系,高度和时间的对应关系如下表:
(2) 在返回舱在距离地面5km时,要求宇航员打开电磁信号灯以便地面人员搜寻,判断
宇航员应在何时开启信号灯?八年级各科期末试卷及答案(五)八年级期末试题及答案
八年级下学期期期末考试
考生注意:1、考试时间90分钟。【八年级各科期末试卷及答案】
一、听,选择适当的答案。听一遍。(每小题1分, 共5分)
) 1. A. No, not at all.
B. Do you?
C. No, thanks.
) 2. A. Don’t worry.
B. You are right.
C. It doesn’t matter.
) 3. A. Yes, you are right.
B. Yes, it isn’t a lovely day.
C. Good morning, Tina. But I don’t think so.
) 4. A. You’re clever.
B. That’s a good idea.
C. I’d love to.
) 5. A. Yes, please.
B. I’m glad to hear that.
C. Sorry, he is out. 二、听, 选择意义最接近的项。听一遍。(每小题1分, 共5分)
) 6. A. Holly likes swimming.
B. Holly can swim in the river.
C. Holly does well in swimming.
) 7. A. My friends enjoyed themselves in the park last Sunday.
B. My parents had a wonderful time in the park last Sunday.
C. My friends had enough time in the park last Sunday.
) 8. A. Will you please buy a dictionary for me?
B. Do you have a dictionary for me?
C. Could I borrow your dictionary?
) 9. A. We shall go out to do some shopping.
B. How about going out to do some shopping?
八年级英语试卷 第1页(共14页)
C. We are going to the shop and buy something.
) 10. A. Do you have a ruler?
B. Is your ruler here?
C. Is this ruler yours?
三、 听对话, 选择适当的答案。 听一遍。(每小题1分, 共5分)
) 11. A. Hot.
B. Cloudy.
) 12. A. The red one.
B. The brown one.
C. The green one. (
) 13. A. On foot.
B. By bus.
C. By bike.
) 14. A. At a cinema.
B. At a bus-stop.
C. In a hospital. (
) 15. A. Pedro is nine and Toby is fourteen.
B. Pedro is fourteen and Toby is nine.
C. Pedro is fourteen and Toby is fifteen.
四、 听长对话, 选择适当的答案。听两遍。(每小题1分, 共5分) (
)16. A. Tuesday.
B. Thursday.
C. Wednesday.
) 17. A. A week ago.
B. The day before yesterday.
C. On October 23rd.
) 18. A. Had classes.
B. Did exercise.
C. Had the meetings.
) 19. A. In the morning.
B. After school.
C. In the afternoon.
) 20. A. On October 23rd.
B. On October 22nd.
C. On October21st.
五、 听短文,选择正确的选项。 听两遍。(每小题1分, 共5分)
) 21. A. At seven.
B. At twelve.
C. At five thirty.
) 22. A. In Tianjin.
B. In Beijing.
C. In Wuhan.
) 23. A. Drawing and reading story-books.
B. English and Chinese.
C. Drawing and English.
) 24. A. He is drawing now.
B. He’s having his breakfast now.
C. He is reading English now.
) 25. A. He is a lazy boy.
B. He is a good student and studies hard.
C. He is friendly and polite to his friends.
第二部分:语言综合运用(50分)
八年级英语试卷
第2页(共14页)
一、单项选择。(每小题1分,共20分) (
)1. Can you tell me ________?
) 12. It is good to have ________every day.
A.two glass of milk
B.two glass of milks
C.two glasses of milk
A. where he is
B. where is he
C. he is where
D. what is he
2. Would you please driver faster? My flight is ________.
A. taking off
B. getting off
C. turning off
D. putting off
3. There is something wrong with my computer. _______ should I do?
) 4 .How do you get to school ?
A. take the subway
B.by subway
C. in a subway
D.take bike
5. –Tina, I _____ supper but you _____ the dishes, OK? –Sure.
A. make, do
B. do, make
C. make, make
6. This pair of shoes ______ nice.
D. is looking
7. The man got really mad ______ me.
8. –What were you doing when I asked for your help just now?
--Oh, Mum, I am sorry. I ______. I didn’t hear you.
A. listened to the music
B. was listening to the music
C. listened the music
D. was listening the music
9. The clothes are so ugly that you shouldn’t ________.
A. put on them
B. wear them
C. put it on
D. wear it
10. There will be _____ cars and _____ pollution.
A. fewer, less
B. less, fewer
C. more, much
D. much, less
11. –What do you think of the party, Maria?
--Oh, great! Thank you for _____ me _____ the story.
A. invite, for
B. inviting, to
C. invite, to
D. inviting, for
八年级英语试卷
第3页(共14页) (
) 13._______ yogurt do we need ?
A. How many
B.How about
C.How much
D.How long
) 14. When did you ______ Dalian?
B. reached
C. arrive in
D. arrived at (
) 15. The boy is ______ to go to school.
A. enough old
B. enough young
C. old enough
D. young enough
) 16. What _____ our life _____ in ten years?
A. does, like
B. is, like
C. will, like
D. will, be like (
) 17. –Shall we go to the movies?
-- _______
A. A good idea.
B. No, I don’t.
C. What about you?
D. I’d like
) 18. He’s quite ______ math, but he never drops it.
A. good at
B. weak in
C. interested in
D. tired of (
) 19. I saw him _____ basketball an hour ago.
B. to play
) 20.They are watching _______.
A. at the doctor
.in doctor’s
C. at the doctor’s
D. in the doctor 二、完形填空。(每小题1分, 共10分)
about the Internet, but what is it?
The Internet is made up of many different networks around the world. A network is a group of computers put together. These networks joined together are
that doesn’we have joined the Internet, there are things we can do. We can have much
on the World Wide Web. We can use the Internet, instead of a library to
all kinds of our favorite sports or film stars and do shopping on the Internet. We can send messages to other people.
八年级英语试卷 第4页(共14页)
e-mail, it’our friends or sending a letter.
Thanks to the Internet, the world is becoming smaller and smaller. People can need. They can buy or sell whatever they want by the Internet. But do you know 98% proved is that everyone dreams
) 1. The best title for the passage is ______.
A. How to Sleep
B. What is REM Sleep
C. Five Stages of Sleep
D. The Importance of Sleep (
) 2. During stages one and two, ________.
now work at home with a computer in front, getting and sending the information they
English? So what will English be like tomorrow?
) 1. A. a bit of
) 2. A. May
D. Though (
) 3. A. where
C. however
) 4. A. lots of
) 5. A. interest
B. friends
C. interesting
D. interested (
) 6. A. find
B. look for
C. find out
) 7. A. with
) 8. A. With
) 9. A. call
B. calling
C. to call
D. called (
) 10. A. with
D. to 二、阅读理解。(每题1分,共20分) A. 选择最佳选项回答问题。
Doctors have studied sleep for many years. It is said that a lot happens when people sleep. It is reported that people have five stages of sleep and that people may go through each stage about every 90 minutes.
During the first two stages, you sleep lightly. That is, if someone calls you or puts his hands on you, you wake up quickly. Your body rests quietly. Your heart beat slowly. You breathe more slowly than when you are awake.
During stages three and four, you sleep deeply. You don’t hear sounds. Light don’t wake you up. Your heart beats more slowly than in stages one and two. The last stage of sleep is called Rapid Eye Movement. During REM sleep, you breathe faster, and your heart beats faster than in stage one through four. Your eyes move rapidly under your eyelips. All of this happens because you are dreaming. What doctors have
八年级英语试卷 第5页(共14页)
A. we wake up easily
B. we don’t want to wake up
C. we breathe quickly
D. we don’t wake up easily (
) 3. When we sleep deeply, _______.
A. we can hardly breathe
B. we can hear sounds
C. our hearts beat faster and faster
D. neither sounds nor lights can wake us up easily
) 4. The Rapid Eye Movement shows that______.
A. we want to wake up
B. we can hear some calling
C. our eyes are under the eyelids
D. we are dreaming (
) 5. Which of the following is true?
A. Five stages of sleep usually takes 90 minutes. B. Your eyelids sometimes open during REM sleep/.
C. Sometimes we may go from the last stage of sleep to the first one. D. It is proved that we all dream during sleep.
B. 阅读短文,判断正(T)误(F)。
What is the sky? Where is it ? How High is it? What lies above the sky? I am sure that you have asked these questions. They are very difficult to answer, aren’t they?
If someone asked you, “What color is the sky?” I think that you would answer: “Blue.” I am afraid that you would be wrong. The sky has no color. When we see blue, we are looking at blue sunlight. The sunlight is shining on little bits of dust in the air.
Is the sky full of air? I am sure that you have asked this question, too. We know that there is air all around the world. We could not breathe without air. Planes could not fly without air. They need air to lift their wings. Planes cannot fly very high
八年级英语试卷
第6页(共14页)
because as they go higher, the air gets thinner. If we go far enough away from the “ Sorry, I never wear shoes.”
earth, we find there is no air.
Perhaps we can answer some of our questions now. What is the sky? Nothing. Where is it? It is all around the world. The sky is space. In this space there is nothing except the sun, the moon, and all the stars. (
) 1. Everybody knows how high the sky is. (
) 2. The color of the sky is blue. (
) 3. We can find air all around the world. (
) 4. We will be alive even though there is no air. (
) 5. The sky is nothing.
C. 阅读短文,回答问题。
Long, long ago, there lived a very rich and strong king. All the people in his country were afraid of him. Was he happy? No, he thought he had a serious illness and it made him sad all the time. The doctors in his country could not cure him. He was so angry with them that he cut off their heads.
One day two famous doctors from another country came to see him. The king said to them, “ If you can cure me and make me happy, I will give you a bag of gold.” The first doctor examined the king. He found nothing was wrong with the king. “ Oh, King, you are very well,” said the doctor. “ You only think you are ill and that makes you unhappy.” The king was very angry when he heard this. He told his men to cut off the doctor’s head.
The second doctor knew he had to be careful. “ Oh, King, you will be all right if you find a happy man and wear his shoes,” he said. The king was satisfied with his words and thought that the doctor was clever. Then he gave the doctor a bag of gold. At once, the doctor began to look for the happy man and hid shoes.
The king asked hundreds of people whether they were always happy. They all said they were sometimes happy and sometimes unhappy. At last, the king met a beggar. The beggar said that he was always happy. “ Give me your shoes quickly,” said the king, “ and I will make you a very rich man.” The beggar smiled and said,
八年级英语试卷
第7页(共14页)
1. Why did the king cut off all the doctors’ heads in his country?
__________________________________________________________ 2. What did the king say to the two doctors from another country?
___________________________________________________________ 3. Did the first doctor tell the truth?
____________________________________________________________ 4. Who got a bag of gold?
_____________________________________________________________ 5. What did the beggar tell the king?
_____________________________________________________________
D. 任务型阅读。
A visit to a doctor’s office costs from fifteen to fifty dollars. It is almost impossible for people to pay for the medical care they need. Many people in the USA think that doctors are Most doctors, however, They say that they were required to study medicine for a long time. say that it is necessary for most medical students to borrow money from bank to pay their tuition. Because this money
Therefore, it is impossible that the high cost of medical care in America is
八年级英语试卷 第8页(共14页)
decreased. Because high tuition is one cause of high cost. One way to lower costs
二、 用所给词的适当形式填空。(每小题1分, 共10分) would be to lower medical schools’ tuition. 1. 将画线句子(A)译成汉语。
________________________________________________________________ 2. 将画线句子(D)改为同义句。
_______________________________________________________________ 3. 将画线部分(E)连词成句。
________________________________________________________________ 4. 用英文解释画线部分(C)。
________________________________________________________________ 5. 将画线部分(B)译成汉语。
_______________________________________________________________
第三部分:基础部分(35分)
一、 根据句意和首字母提示填单词。(每小题1分, 共10分)
1. I t_________ the train to school yesterday.
2. Everyone in my class went to the party e________ me, because I was ill in bed. 3. I will have my hair cut in the b_________ shop.
4. I have finished my end-of-year exams. I will get my r________ card next week. 5. Qingdao is in the east of Shandong P_________. 6. There are many beautiful s__________ on the beach. 7.
I went to Shanghai last year and f________ in love with it.
8. He a_________ with Ben about the best plan just now. He didn’t think it is perfect. 9. While I was walking down the street, the UFO l_________. 10. They went to give their best friend Rose a s___________ party.
八年级英语试卷 第9页(共14页) 1. I’m sure there ____________(be) robots in our homes in the future. 2. I usually have a ____________(quickly) breakfast every morning. 3. He told me he _____________(call) me the next day.
4. _________ you already ___________(decide) what you want to be after your graduation?
5. Jeans Corner is a _________ store. It sells clothes __________. (good) 6. –How long did your brother swim? –He ________(swim) for two hours. 7. ________ they ________(go) hiking next Sunday?
8. You are always ___________(kid). If you do the same thing again, I’ll be angry. 9. I am __________(suppose) to meet you at the airport.
10. __________(one) of all, we should try our best to find out the reason. 三、 句型转换。(每空1分, 共10分)
1. My sister is ill. I must take care of her at home. (改为同义句) My sister is ill. I must ________
________ her at home.
2. 就画线部分提问) ________ was the woman __________ when the alien got out? 3. She washed clothes last night. (改为过去进行时态) She ________
___________ clothes last night. 4. Could you please clean your living room? (改为否定句) Could you please __________
___________ your living room? 5. 就画线部分提问) _________
___________ have they been collecting stamps? 四、 从方框中选出五个选项补全对话。(每小题1分, 共5分) A: What do you think your life will be like in ten years, Jenny? B: I think I’ll be a pilot. A: B: Of course I do. I like to visit different places, make different friends and learn different things.
八年级英语试卷 第10页(共14页)
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