八年级上学期周周清

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八年级语文第一周周周清(含答案)

八年级语文第一周周周清(含答案)

八年级语文第一周周周清班级__________ 姓名____________一、语言运用1、“永远的丰碑”是中央电视台《新闻联播》中的一个专题栏目,该栏目每期介绍一位英雄人物的感人事迹,在社会上引起了强烈反响。

请你回答以下问题。

①“永远的丰碑”的含义是什么?(4分)___________________________________________________________②请你根据下面的材料,为战斗英雄陈师长写几句赞语。

(6分)当年红三十四师师长陈树湘率部为红军殿后。

掩护主力队伍撤退以后,他们只剩下四五百人。

等到他们撤退的时候,湘江已经被国民党封锁了。

他们又饿着肚子翻山越岭退回到湘西打游击。

撤退途中,陈师长腹部中了敌人的子弹,他命令其他的战士撤退,自己来掩护,不幸被敌人抓住。

敌人非常得意,在抬着他去邀功的时候,陈师长把自己的肠子掏出来扯断,最后壮烈牺牲,年仅29岁。

——————————————————————————————————————————————————————————————————————③请你谈谈观看这个专题栏目后的感受。

(6分)————————————————————————————————————————————————————————————————————————2、给下面的新闻加一个标题(4分)“伟大壮举光辉历程————纪念中国工农红军长征胜利70周年展览”19日上午在陕西历史博物馆开幕,展览主要采用图片、文物照片和投影、电视音像作品等多种表现形式向公众展出。

这次展览由中组部、中宣部、中央文献研究室、中央党史研究室、解放军总政治部联合主办,中国人民革命军事博物馆和陕西省委宣传部承办。

展览以长征历程为主线,以弘扬长征精神为主题,在全面展示长征起因和过程的基础上,通过长征中的重要战役战斗、重要事件、重要会议和重要人物,深刻揭示和突出反映伟大的长征精神。

据悉,此前在中国人民革命军事博物馆举行的展览,参观人数已突破百万。

八年级英语上册周周清试题试题

八年级英语上册周周清试题试题

八年级英语周周清时间是60分钟分值100分一、单项选择〔15分〕〔〕1 Many people are to live in the countryside.A. WillB. WouldC. WillingD. willed〔〕2Jenny is so kind that she often _______her snacks with her friends .A. showsB. givesC. bringsD. shares〔〕3 A: What are you going to do when you ________ ?B: I want to be an artist .A. grow upB. in needC. grow intoD. grow down( ) 4 He always tells funny things to me and always ___________.A. makes me to laughB. makes me laughingC. makes me laughD. makes me laughs 〔〕5. The film is ______ than that one.A. funB. funnyC. funnierD. the funniest 〔〕6 Shanghai is larger than ______ in Japan.A. any other cityB. any cityC. any citiesD. any other cities创作;朱本晓〔〕7_______ he is, ________he feels.A. The busier, the happyB. the busy, the happyC. The busier, the happierD. the busier, The happiest ( ) 8. Hainan is ________ in China.A. second largest islandB. the second largest islandC. the large second islandD. the second large island( )9 Beijing is one of ________ in the world.A.the most beautiful countriesB. the most beautiful citiesC. the very beautiful citiesD. the very beautiful countries 〔〕10. Of the two boys ,Jim is ____________A tallB tallestC the tallestD the taller 〔〕11 Your ideas sounds __________than mine .A much betterB more betterC very betterD very well ( )12. Mr Zhou is good at __________ jokes.A. to tellB. TellC. tellingD. speaking( )13. Sandy’s hair is longer than____________.A. she.B. her.C. hers.D. her’s.创作;朱本晓( )14.The Golden Gate Bridge is very_______. Linda is very ______in it.A. interesting; interestingB. interested; interested.C. interesting; interested.D. interested; interesting.〔〕15 Tom is ________ honest boy, and we all like him .A aB anC theD /二、完形填空先通读以下短文,掌握其大意,然后从A, B, C, D四个选项里面选出最正确答案。

bfb科学八年级上册周周清测试卷

bfb科学八年级上册周周清测试卷

bfb科学八年级上册周周清测试卷第一部分:选择题(每小题1.5分,共45分)1.下列选项中,属于化学变化的是()A. 溶解盐巴水中B. 冰块变成水C. 纸张切成碎片D. 铁生锈2.下列描述中,属于纯物质的是()A. 纯净水B. 矿泉水C. 河水D. 井水3.液体甲、乙混合后变为橙色,消失,这可能是()A. 热膨胀B. 化学变化C. 物理变化D. 稀释4.下列实验操作能加速溶解吗?()A. 提高温度B. 加大压力C. 加入氧气D. 除去溶液表面的浮物5.铁、水、氧气,属于下列哪一类物质?()A. 纯物质B. 混合物C. 硬物质D. 感官描述不足6.下列物品都是混合物,但____同样是混合物。

()A. 矿泉水B. 雪糕C. 巧克力D. 奶茶7.在pH=7.6的溶液中,属于弱酸的物质是()A. 纯净水B. 白醋C. 柠檬汁D. 鲜橙汁8.下列哪项不属于变化物质的特征?()A. 密度B. 活化能C. 沸点D. 溶解度9.下列哪个实验操作不能判断这种溶液是酸性的?()A. 测定pH值B. 加入金属钠C. 用石蕊试纸试验D. 固定卷片用来测试10.下列哪个物质在室温下能溶解在水中?()A. 石蜡B. 石墨C. 血红蛋白D. 乙醇11.下列实验操作能分离沙子和石膏的是()A. 用大石头压碎混合物B. 在混合物上添热C. 用足量水反复冲洗混合物D. 对混合物用磁铁12.下列说法正确的是()A. 酒精是硬物质B. 冰块可以使温度发生变化C. 氢氧化钠是弱酸D. 电解水是单质13.下列物质是纯物质的是()A. 苹果酒B. 苏打水C. 琥珀酸D. 菠萝饮料14.下列实验心得不正确的是()A. A银离子在水中导电B. B氧化铜加热后化学变化C. C硫酸铜加热后热分解D. D水溶液是氢离子导体15.下列实验步骤不正确的是()A. 先称量盐酸、氢氧化钠,再将其中一种加入水中稀释B. 将0.5g酸性土加入大杯中,对一部分加少量水,对另一部分加石油醚C. 将100mL 纯净水倒入容器中,液面高处光线下观察,并测定pH值D. 将石灰水倒入试管中,再用石蕊试纸试验测定酸碱特性16.下列说法错误的是()A. 九九乳是纯物质B. 将薄荷叶放入水中属于物理变化C. 二元键是化学键,比单键强D. pH=3的溶液强酸17.下列物质中,属于纯物质的是()A. 辣椒面B. 矿泉水C. 木炭D. 美年达18.下列哪个能眼睛可见?()A. 浸泡后的土耳其棉手帕B. 氢氧化钠溶液C. 一瓶汽油D. 纯净水19.两份物质混合后,几乎不能再分开,可以近似看作一种物质,这种物质就是()A. 纯净水B. 苏打枝C. 红酒D. 矿泉水20.以下哪种物质不是元素?()A. 碳B. 暗紫色的气体C. 金属汞D. 黄浑浊液体21.彩色液体中颜色的变化常常可能是因为()A. 改变物质的体积B. 分解物质,得到反应产物C. 物质发生了化学反应D. 溶液被浓缩了22.白色、坚硬,有光泽,在空气中放置,逐渐失去光泽变得暗淡,最终逐渐变为黑色。

部编版八年级上册语文,第五单元周周清(一)

部编版八年级上册语文,第五单元周周清(一)

部编版八年级上册语文,第五单元周周清(一)第五单元周周清(一) [测试范围:第18、19课时间:45分钟满分:45分] 1. 给下列加点的字注音或根据拼音写出相应的字词。

(5分) (1)永定河上的卢沟桥,是联拱石桥,结构坚固,桥面用石板铺砌(),两旁的石柱上雕刻的狮子形态逼真,惟妙惟肖()。

(2)苏州园林里假山的堆叠,全在乎设计者和匠师们生平多阅历,胸中有丘hè()。

墙壁上砖砌的各式lòu()空图案,增加了景致的深度。

有几个园里有古老的藤萝,盘曲lín xún()的枝干就是一幅好画。

2. 下列句中加点的词语运用正确的一项是()(3分) A. 苏州园林是设计者和匠师们因地制宜、别有用心的杰作。

B. 学校艺术节上,同学们表演了生动有趣的节目,相声表演惟妙惟肖,令人捧腹。

C. 卢沟桥桥栏柱头上刻的狮子独具慧眼,赏心悦目。

D. 早在13世纪,卢沟桥就闻名遐迩,“卢沟晓月”很早就成为北京的胜景之一。

3. 下列句子中的加点词语删去后,不影响句子意思的一项是()(3分) A. 《水经注》里提到的“旅人桥”,大约建成于公元282年,可能是有记载的最早的石拱桥了。

B. 这些桥大小不一,形式多样,有许多是惊人的杰作。

其中最著名的当推河北省赵县的赵州桥。

C. 桥宽约8米,桥面平坦,几乎与河面平行。

D. 石拱桥在世界桥梁史上出现得比较早。

4. 下列句子中没有语病的一项是()(3分) A. 在成都市教育局的热情邀请下,诗人郑愁予远道而来,与成都教师共享文学之乐。

B. 随着我市“阳光体育活动”的广泛开展,同学们的身体素质得到了极大的改善。

C. 近年来,黄河流域干旱严重,专家预测小麦将减产大约30%左右。

D. 为了避免受打扰的事情不再发生,他闭门谢客,低调地度过了92岁生日。

5. 默写填空。

(4分) (1)无可奈何花落去,__________________。

(晏殊《浣溪沙》) (2)常记溪亭日暮,__________________。

人教版八上数学八年级数学上册周周清 检测内容

人教版八上数学八年级数学上册周周清 检测内容

检测内容:14.1得分________ 卷后分________ 评价________一、选择题(每小题3分,共24分)1.(温州中考)计算a 6·a 2的结果是(C )A .a 3B .a 4C .a 8D .a 122.(南通中考)下列计算,正确的是(D )A .a 2·a 3=a 6B .2a 2-a =aC .a 6÷a 2=a 3D .(a 2)3=a 63.下列多项式相乘的结果为x 2+3x -18的是(D )A .(x -2)(x +9)B .(x +2)(x -9)C .(x +3)(x -6)D .(x -3)(x +6)4.通过计算比较图①,图②中阴影部分的面积,可以验证的计算式子是(D )A .a (b -x )=ab -axB .b (a -x )=ab -bxC .(a -x )(b -x )=ab -ax -bxD .(a -x )(b -x )=ab -ax -bx +x 25.下列运算中,错误的是(B )A .(6a 3+3a 2)÷12a =12a 2+6a B .(6a 3-4a 2+2a )÷2a =3a 2-2aC .(9a 7-3a 3)÷(-13a 3)=-27a 4+9 D .(14 a 2+a )÷(-12 a )=-12a -2 6.(河北中考)小明总结了以下结论:①a (b +c )=ab +ac ;②a (b -c )=ab -ac ;③(b -c )÷a =b ÷a -c ÷a (a ≠0);④a ÷(b +c )=a ÷b +a ÷c (a ≠0).其中一定成立的个数是(C )A .1个B .2个C .3个D .4个7.当m 为偶数时,(a -b )m ·(b -a )n 与(b -a )m +n 的结果(A )A .相等B .互为相反数C .不相等D .以上说法都不对8.(乐山中考)已知3m =4,32m -4n =2.若9n =x ,则x 的值为(C )A .8B .4C .2 2D . 2二、填空题(每小题3分,共18分)9.计算:-a 3·(-a )2=__-a 5__.10.计算:(1)23 ×(π-1)0=__23 __; (2)[(-a -b )2]5·(a +b )3=__(a +b )13__.11.一个多项式与-8x 2的积是多项式-16x 3+40x 2y ,则这个多项式是__2x -5y __.12.小明在进行两个多项式的乘法运算时,不小心把乘以x +y 2 错抄成乘以12,结果得到(3x 2-xy ),则正确的计算结果是__3x 3+2x 2y -xy 2__.13.已知a x +y =6,a y =3,则a 2x =__4__.14.已知(x -12)(x -n )=x 2+mx -12,则m -n =__-10__.三、解答题(共58分)15.(12分)计算:(1)(-2)3+(2 )2-(3 -5)0;解:原式=-8+2-1=-7(2)(23)2 020×1.52 018×(-1)2 020; 解:原式=(23 ×32 )2 018×49 ×1=49(3)(2a 2b )3·(-ab 2)÷(-8a 7b 5);解:原式=1(4)(m -n )2·(n -m )3·(n -m )4.解:原式=(n -m )2·(n -m )3·(n -m )4=(n -m )916.(8分)解方程或不等式:(1)(x -3)(x +8)=(x +4)(x -7)+2(x +5);解:x 2+5x -24=x 2-3x -28+2x +10,∴5x +x =6,解得x =1(2)2x (x -4)>(x +4)(x +2)+(x -3)(x +6).解:2x 2-8x >x 2+6x +8+x 2+3x -18,∴-8x -9x >-10,解得x <101717.(6分)先化简,再求值:[2y (x -1)8-3y 2(x -1)7+4y 3(x -1)6]÷[-3y (x -1)2],其中x =2,y =-1.解:原式=-23 (x -1)6+y (x -1)5-43y 2(x -1)4,当x =2,y =-1时,原式=-318.(8分)小明想把一个长为60 cm ,宽为40 cm 的长方形硬纸片做成一个无盖的长方体盒子,于是在长方形纸片的四个角各剪去一个相同的小正方形.(1)若设小正方形的边长为x cm ,求图中阴影部分的面积;(2)当x =5时,求这个盒子的体积.解:(1)(60-2x )(40-2x )=4x 2-200x +2 400.答:图中阴影部分的面积为(4x 2-200x +2 400)cm 2(2)当x =5时,4x 2-200x +2 400=1 500(cm 2).这个盒子的体积为1 500×5=7 500(cm 3)19.(10分)(1)3x =4,3y =6,求92x -y +27x -y 的值;解:92x -y +27x -y =34x-2y +33x -3y =(3x )4÷(3y )2+(3x )3÷(3y )3=44÷62+43÷63=649 +827 =20027(2)已知10a =20,10b =15,求3a ÷3b 的值. 解:∵10a =20,10b =15 ,∴10a ÷10b =10a -b =20÷15=102.∴a -b =2,∴3a ÷3b =3a -b =32=920.(14分)阅读材料:一般地,若a x =N (a >0且a ≠1),那么x 叫做以a 为底N 的对数,记作x =log a N ,比如指数式23=8可以转化为对数式3=log 28,对数式2=log 636可以转化为指数式62=36.根据以上材料,解决下列问题:(1)计算:log 24=__2__,log 216=__4__,log 264=__6__;(2)观察(1)中的三个数,猜测:log a M +log a N =__log a MN __(a >0且a ≠1,M >0,N >0),并加以证明这个结论;(3)已知:log a 3=5,求log a 9和log a 27的值(a >0且a ≠1).解:(2)log a M+log a N=log a MN;证明:设log a M=x,log a N=y,则a x=M,a y=N,∴M·N=a x·a y=a x+y,根据对数的定义,x+y=log a MN,即log a M+log a N=log a MN(3)由log a3=5,得a5=3.∵9=3×3=a5·a5=a10,27=3×3×3=a5·a5·a5=a15,∴根据对数的定义,log a9=10,log a27=15。

2024八年级数学上册第一章勾股定理周周清检测内容1

2024八年级数学上册第一章勾股定理周周清检测内容1

检测内容:1.1-1.3得分________卷后分________评价________一、选择题(每小题5分,共30分)1.(开封期末)下列各组数据是三角形的三边长,能构成直角三角形的是( D )A.2,3,4 B.4,5,6C.32,42,52D.6,8,102.如图,在Rt△ABC中,∠ACB=90°.若AB=15 cm,则正方形ADEC和正方形BCFG 的面积和为( C )A.150 cm2B.200 cm2C.225 cm2D.无法计算第2题图第4题图第5题图3.始终角三角形的周长为24,斜边长与始终角边长之比为5∶4,则这个直角三角形的面积是( B )A.20 B.24 C.28 D.304.如图,在某次海上编队演习中,两艘航母护卫舰从同一港口O同时动身,一号舰沿南偏西30°方向以12海里/小时的速度航行,二号舰以16海里/小时的速度航行,离开港口1.5小时后它们分别到达相距30海里的A,B两点,则二号舰航行的方向是( C )A.南偏东30°B.北偏东30°C.南偏东60°D.南偏西60°5.如图,一个工人拿了一个2.5 m长的梯子,底端A放在距离墙根C点0.7 m处,另一头B点靠墙.假如梯子的顶部下滑0.4 m,则梯子的底部向外滑了( D ) A.0.4 m B.0.6 m C.0.7 m D.0.8 m6.(辉县市期末)如图①是我国古代闻名的“赵爽弦图”的示意图,它是由四个全等的直角三角形围成的.若AC=6,BC=5,将四个直角三角形中边长为6的直角边分别向外延长一倍,得到图②所示的“数学风车”,则这个风车的外围周长是( D )图①图②A.72 B.52 C.80 D.76二、填空题(每小题5分,共25分)7.如图,起重机吊运物体,∠ABC =90°.若BC =12 m ,AC =13 m ,则AB =__5__m. 8.已知一组勾股数中有一个数是2mn (m ,n 都是正整数,且m >n ≥2),尝试写出其他两个数(均用含m ,n 的代数式表示,只要写出一组):__m 2-n 2,m 2+n 2(答案不唯一)__.9.小东拿着一根长竹竿进一个宽为4 m 的长方形城门,他先横着拿进不去,又竖起来拿,结果竿比城门高0.5 m ,当他把竿斜着时,两端刚好顶着城门的对角,则竿长__16.25__m.10.如图,在△ABC 中,AB =AC =5,BC =6.M 为BC 的中点,过点M 作MN ⊥AC 于点N ,则MN =__125__.11.如图,长方体的底面边长分别为2 cm 和4 cm ,高为5 cm.若一只蚂蚁从P 点起先经过4个侧面爬行一圈到达Q 点,则蚂蚁爬行的最短路径长为__13__cm.三、解答题(共45分)12.(10分)如图,在△ABC 中,CD ⊥AB 于点D ,AC =4,BC =3,DB =95. (1)求CD ,AD 的长;(2)试推断△ABC 的形态,并说明理由.解:(1)因为CD ⊥AB ,所以CD 2+DB 2=BC 2,即CD 2+(95 )2=32,所以CD =125.因为AD 2+CD 2=AC 2,即AD 2+(125 )2=42,所以AD =165 (2)因为AB =AD +DB =165 +95=5,所以AB 2=AC 2+BC 2,所以△ABC 为直角三角形13.(10分)如图,在△ABC 中,AB =AC, BC =20 cm ,D 是腰AB 上一点,且CD =16 cm ,BD =12 cm.求:(1)∠BDC 的度数;(2)△ABC 的周长.解:(1)因为BD 2+CD 2=122+162=202=BC 2,所以∠BDC =90°(2)设AD =x cm ,则AB =AC =(x +12) cm.因为∠BDC =90°,所以∠ADC =90°,所以AD 2+CD 2=AC 2,即x 2+162=(x +12)2,解得x =143 ,∴AB =AC =1623cm ,所以△ABC 的周长为1623 +1623 +20=5313(cm) 14.(12分)强大的台风使得山坡上的一棵树甲从A 点处拦腰折断,如图所示,其树顶端恰好落在另一棵树乙的根部C 处,已知AB =4 m ,BC =13 m ,两棵树的水平距离为12 m ,求这棵树原来的高度.解:过点C 作CD ⊥AB 的延长线于点D ,则CD =12 m .由勾股定理得BD 2+CD 2=BC 2,即BD 2+122=132,所以BD =5,所以AD =AB +BD =4+5=9 m.在Rt △ACD 中,AC 2=CD 2+AD 2=122+92,所以AC =15,所以AC +AB =15+4=19(m),所以这棵树原来的高度是19 m15.(13分)台风是一种自然灾难,它以台风中心为圆心在四周上百千米的范围内形成极端气候,有极强的破坏力.如图,有一台风中心沿东西方向AB 由A 行驶向B ,已知点C 为一海港,且点C 与直线AB 上的两点A ,B 的距离分别为AC =300 km ,BC =400 km ,AB =500 km ,以台风中心为圆心四周250 km 以内为受影响区域.(1)求∠ACB 的度数;(2)海港C 受台风影响吗?为什么?(3)若台风的速度为20千米/小时,当台风运动到点E 处时,海港C 刚好受到影响,当台风运动到点F 时,海港C 刚好不受影响,即CE =CF =250 km ,则台风影响该海港持续的时间有多长?解:(1)因为AC 2+BC 2=3002+4002=5002=AB 2,所以△ABC 是直角三角形,∠ACB =90° (2)海港C 受台风影响,理由:过点C 作CD ⊥AB 于点D .因为S △ABC =12 AC ×BC =12CD ×AB .所以CD =240(km)<250 km ,所以海港C 受台风影响(3)在Rt △CDE 中,由勾股定理得ED 2+CD 2=CE 2,即ED 2+2402=2502,所以ED =70,所以EF =140 km ,则140÷20=7(小时).答:台风影响该海港持续的时间有7小时。

bfb数学八年级上册周周清检测卷

bfb数学八年级上册周周清检测卷示例文章篇一:哎呀呀!一提到这八年级上册的BFB 数学周周清检测卷,我这心里可真是像装了个小兔子,七上八下的!你们能想象吗?每周都要来这么一场“数学大战”!那一张张卷子发到手里的时候,感觉就像是接到了一个艰巨的任务,而且还必须得完成得漂漂亮亮的!每次考试前,我都会紧张得不行。

我就问自己:“我真的都复习好了吗?那些公式和定理我真的记住了吗?”心里那叫一个没底儿啊!考试的时候,我眼睛紧紧盯着题目,脑子飞速运转。

这题,哎呀,不就像是上次老师讲过的那种类型吗?赶紧回忆回忆解题步骤。

那题,怎么感觉像个“拦路虎”,横在我面前,不让我前进呢?我咬着笔头,心里着急得要命:“这可怎么办呀?时间可不等人!”看看我旁边的同桌,他倒是一脸淡定,刷刷刷地写着答案。

我忍不住想:“他怎么这么厉害?难道他有什么秘密武器?”再看看前面的学霸,那神情,仿佛这卷子对他来说就是小菜一碟。

我心里那个羡慕哟:“啥时候我也能像他这样轻松应对呢?”好不容易做完了,检查的时候又是一阵紧张。

“这道题我是不是算错了?那道题的步骤有没有写全?”等到交卷的那一刻,我长长地舒了一口气,可心里还是忐忑不安,不知道自己能考个啥样。

等卷子发下来的时候,那心情,就像坐过山车一样。

考得好,那简直要高兴得飞起来,心里想着:“哈哈,我这努力没白费!”要是考得不好,那可就像霜打的茄子——蔫了,垂头丧气地想:“怎么又没考好呢?我得加把劲啦!”其实啊,这BFB 数学八年级上册周周清检测卷就像是一次次的小挑战,虽然有时候让人头疼,让人紧张,但也让我们能发现自己的不足,能让我们不断进步。

只要我们认真对待,努力去克服困难,就一定能在数学的海洋里畅游,你们说对不对?所以呀,不管成绩好坏,每次的周周清都是一次成长的机会。

我们可不能被它打倒,要勇敢地迎接它,战胜它!示例文章篇二:哎呀呀,说起这八年级上册的BFB 数学周周清检测卷,可真是让我又爱又恨呐!每周一到做这个卷子的时候,我就感觉自己像是要上战场的战士,紧张得不行。

八年级上册语文(部编版)第三单元 周周清作业一(含答案)

第三单元周周清(一)[测试范围:第10、11课时间:45分钟满分:45分]一、基础清(21分)1. 下列加点字的注音完全正确的一项是()(2分)A. 阙.(quē)处经纶.(lún) 千转.(zhuǎn) 与.(yù)其奇者B. 徙.倚(xǐ) 东皋.(gāo) 素湍.(tuān) 夕日欲颓.(tuí)C. 襄.(xiāng)陵沿溯.(shù) 未寝.(qǐn) 重.(chóng)岩叠嶂D. 飞漱.(shù) 藻荇.(xìng) 塞.(sài)上缥.碧(piāo)2. 解释下列加点的词。

(3分)(1)沿溯阻绝.()(2)属.引凄异()(3)素湍.绿潭()(4)晓雾将歇.()(5)五色交辉..()(6)林寒涧肃.()3. 下列句中加点词的古今意思相同的一项是()(2分)A. 自.非亭午夜分,不见曦月或.王命急宣B. 四时.俱备盖.竹柏影也C. 有时朝.发白帝怀民亦未寝.D. 属.引凄异良.多趣味4. 下面句中加点词与“五色交辉”中的“辉”用法相同的一项是()(2分)A. 回清.倒影B. 虽乘奔.御风,不以疾也C. 每至晴初霜.旦D. 空谷..传响5. 下列句中有通假字的一项是()(2分)A. 两岸连山,略无阙处B. 空谷传响,哀转久绝C. 晓雾将歇,猿鸟乱鸣D. 高峰入云,清流见底6. 将下列句子翻译成现代汉语。

(4分)(1)清荣峻茂,良多趣味。

(2)自康乐以来,未复有能与其奇者。

(3)念无与为乐者。

(4)但少闲人如吾两人者耳。

7. 下列修辞手法的判断及其作用的分析不正确的一项是()(2分)A. “浩荡离愁白日斜”运用了夸张的修辞手法,生动地写出了愁绪的繁多、深广、延绵不绝。

B. “沉鳞竞跃”以鳞代指鱼,运用借代的修辞手法,生动具体,形象鲜明,使事物的特点更加突出。

C. “感时花溅泪,恨别鸟惊心”运用拟人、对偶的修辞手法,深刻地表达出诗人面对国家危亡、亲人离散的痛苦之情。

八年级上册数学周周清试卷带答案

一、单选题(共32分)1.下列各等式中成立的有()个.①()a b a bc c---=--;①a b a bc c---=;①a b a bc c-++=-;①a b a bc c-+-=-.A.1B.2C.3D.42.分式434y xa+,2411xx--,22x xy yx y-++,2222a abab b+-中,最简分式有()A.1个B.2个C.3个D.4个3.下列图形,是中心对称图形的是()A.B.C.D.4.如图,Rt ABC△中,∠B=90°,12AB=,5BC=,射线AP AB⊥于点A,点E,D分别在线段AB和射线AP上运动,并始终保持DE AC=.要使DAE和ABC全等,则AD的长为()A.5B.12C.5或12D.5或13第4题第7题第13题第14题5.在实数5-,π2,4,227,3.14159,38,0.232332332……(每相邻两个2之间依次多一个3)中,无理数有()A.4个B.3个C.2个D.1个6.设2221M a a=++,2327N a a=-+,其中a为实数,则M与N的大小关系是()A.M N≥B.M N>C.N M≥D.N M>7.如图,已知BAC DAC∠=∠,则下列条件中不一定能使ABC ADC∆∆≌的是()A.B D∠=∠B.ACB ACD∠=∠C.BC DC=D.AB AD=8.下列说法,错误的是().A.0.698精确到0.01的近似值是0.7B.近似数1.205是精确到千分位C.2与2--互为相反数D.3与5-是同类项.9.估算12÷2的运算结果应在()A.1与2之间B.2与3之间C.3与4之间D.4与5之间10.若111x y z-=,则z等于()A.x y-B.-y xxyC.xyx y-D.xyy x11.下面等式:3242122⨯=①,43271-=②,()222x y x y-=-③,()3412m m=④,()()22222x y x y x y-+=-⑤,1823÷=⑥,其中正确的个数是()A.1B.2C.3D.412.化简28xy y⋅=()A.4y x B.16y x C.4x y D.16x y13.如图,在ABC中,90A∠=︒,25AB BC==,,BD是ABC∠的平分线,设ABD△和BDC的面积分别是1S,2S,则12:S S的值为()A.5:2B.2:5C.1:2D.1:514.如图,ABC中,3AC=,4BC=,5AB=,BD平分ABC∠,如果M、N分别为BD、BC上的动点,那么CM MN+的最小值是()A.2.4B.3C.4D.4.815.如图,在ABC中,120BAC∠=︒,点D是BC上一点,BD的垂直平分线交AB于点E,将ACD沿AD 折叠,点C 恰好与点E 重合,则B ∠等于( ) A .19°B .20°C .24°D .25°第15题 第16题 第18题16.如图,AP 是ABC ∆的角平分线,PM ,PN 分别是APB △,APC ∆的高,则下列结论错误的是( )A .AM AN =B .AB PC AC BP ⋅=⋅ C .1()2ABCS AB AC MP =+⋅ D .ABPACPAB S AC S⋅=⋅二、填空题(共12分)17.已知324122a b c a b c +++=+-+-,则a b c ++的值是_____________.18.如图,在Rt ABC △中,90ACB ∠=︒,BD 平分ABC ∠,E 是AB 上一点,且AE AD =,连接DE ,过E 作EF BD ⊥,垂足为F ,延长EF 交BC 于点G .现给出以下结论:①EF FG =;①CD DE =;①BEG BDC ∠=∠;①45DEF ∠=︒.其中正确的是______.(写出所有正确结论的序号)19.将1、2、3、4……按如图方式排列.若规定(x ,y )表示第x 排从左向右第y 个数,则:①(6,6)表示的数是______;①若2021在(x ,y ),则(2x ﹣y )3的值为_______.三、解答题(共0分) 20(12分).计算(1) ()113482112-+--+-; (2)312227-+;(2) ()()()23331222++--; (4)()24251228-⨯+---+⨯21.(8分)计算下列各题,(1)已知21b +的平方根为3±,321a b +-的算术平方根为4,求6a b +的立方根; (2)已知5a =,24b =,求2a b +.22.(6分)化简求值:221241442x x x x x x x -+⎛⎫⎛⎫-÷- ⎪ ⎪-+-⎝⎭⎝⎭,然后从55x -<<选一个合适的整数作为x 的值代入求值23.(8分)如图,点C 、F 在BE 上,BF CE =,AC DF ∥,A D ∠=∠,判断线段AB ,DE 的数量关系和位置关系,并说明理由.24.(10分)为落实“数字中国”的建设工作,市政府计划对全市中小学多媒体教室进行安装改造,现安排两个安装公司共同完成.已知甲公司安装工效是乙公司安装工效的1.5倍,乙公司安装36间教室比甲公司安装同样数量的教室多用3天. (1)求甲、乙两个公司每天各安装多少间教室?(2)已知甲公司安装费每天800元,乙公司安装费每天400元,现需安装教室120间,若想尽快完成安装工作且安装总费用不超过15000元,则最多安排甲公司工作多少天?25.(12分)已知:60AOB ∠=︒,小新在学习了角平分钱的知识后,做了一个夹角为120°(即120DPE ∠=︒)的角尺来作AOB ∠的角平分线.(1)如图1,他先在边OA 和OB 上分别取OD OE =,再移动角尺使PD PE =,然后他就说射线OP 是AOB ∠的角平分线.试根据小新的做法证明射线OP 是AOB ∠的角平分线;(2)如图2,将角尺绕点P 旋转了一定的角度后,OD OE ≠,但仍然出现了PD PE =,此时OP 是AOB ∠的角平分线吗?如果是,请说明理由.(3)如图3,在(2)的基础上,若角尺旋转后恰好使得DP OB ∥,请判断线段OD 与OE 的数量关系,并说明理由.1.A 2.C 3.B . 4.C 5.B 6.D 7.C 8.A 9.B 10.D 11.B 12.A 13.B 14.A【详解】过点C 作CE AB ⊥于E ,交BD 于点M ,过点M 作MN BC ⊥于点N , ①BD 平分ABC ∠, ①ME MN =,①CM MN CM ME CE +=+=,①Rt ABC △中,90ACB ∠=,3AC =,4BC =,5AB =,CE AB ⊥, ①1122ABC S AB CE AC BC =⋅=⋅△, ①534CE =⨯,① 2.4CE =,即CM MN +的最小值是2.4 15.B 16.D 17.9解:①3a b c +++=①114210a b c -+--+--=,①2221)2)1)0++=,10=20=10=,1=2=1,①1a =,5b =,3c =, ①1539a b c ++=++=, 18.①①① 【详解】①BD 平分ABC ∠, ①12∠=∠, ①EF BD ⊥,①349090EFD DFG ∠=∠=︒∠=∠=︒,, 又①BF BF =, ①BEF BEG ≅, ①EF FG =,故①正确; 过D 作DM ①AB , ①90ACB ∠=︒, ①DC BC ⊥, 又①BD 平分ABC ∠, ①DC DM =,在Rt EMD △中:ED>MD , ①CD DE ≠,故①说法错误; ①BEF BEG ≅, ①56∠=∠,在四边形CDFG 中87180C DFG ∠+∠+∠+∠=︒,90C DFG ∠=∠=︒,①78180∠+∠=︒, ①76180∠+∠=︒, ①68∠=∠, ①38∠=∠,即BEG BDC ∠=∠,故①正确;设12x ∠=∠=,则902A x ∠=︒-, ①AE AD =,①45AED ADE x ∠=∠=︒+,在BED 中,145AED EDB x EDB x ∠=∠+∠=+∠=+︒, ①45EDB ∠=︒, ①90EFD ∠=︒,①45DEF ∠=︒,故①正确. 故答案为:①①①. 19.31 125【详解】解:观察式子可得,第1排的个数为2111⨯-=,前1排的总数为211=,第2排的个数为2213⨯-=,前2排的总数为242=,从右到左依次增大排列, 第3排的个数为2315⨯-=,前3排的总数为293=,从左到右依次增大排列, 第4排的个数为2417⨯-=,前4排的总数为2164=,从右到左依次增大排列, ……第n 排的个数为(21)n -个,前n 排的总数为2n 个,奇数排是从左到右依次增大排列,偶数排是从右到左依次增大排列,(6,6)表示第6排从左向右第6个数前5排的总数为25,第6排的个数为11个,为偶数排,从右向左依次增大, 第6排中,从左向右第6个数,也就是从右向左第6个数, 所以(6,6)表示的数为25631+=;因为24419362021=<,24520252021=> 所以2021是在第45排,即45x = 第45排,为奇数排,从左向右依次增大, 因为2021193685-=,所以85y =将45x =,85y =代入3(2)x y -得33(90852)5(2)1x y =-=- 20.(1)1 (2)53 (3)1243- (4)4 21.(1)3 (2)3或1 22.2144x x -+,当取1x =时,原式的值为1.23.解:AB DE =,AB DE ∥, 理由:BF CE =,BF CF CE CF ∴+=+, BC EF ∴=, AC DF ∥,ACB DFE ∴∠=∠,在ABC 和DEC 中,A D ACB DFE BC EF ∠=∠⎧⎪∠=∠⎨⎪=⎩, ()AAS ABC DEF ∴≌,AB DE ∴=,B E ∠=∠,AB DE ∴∥.24.(1)设乙公司每天安装x 间教室,则甲公司每天安装1.5x 间教室, 根据题意得,363631.5x x-=, 解得,4x =,经检验,4x =是所列方程的解, 则1.5 1.546x =⨯=,答:甲公司每天安装6间教室,乙公司每天安装4间教室;(2)设安排甲公司工作y 天,则乙公司工作12064y-天, 根据题意得:1206800400150004yy -+⨯≤, 解这个不等式,得:15y ≤, 答:最多安排甲公司工作15天. 25.(1)解:证明:如图1中, 在OPD ∆和OPE ∆中, OD OE PD PE OP OP =⎧⎪=⎨⎪=⎩, ()OPD OPE SSS ∴∆≅∆,POD POE ∴∠=∠.(2)解:结论正确.理由:如图2中,过点P 作PH OA ⊥于H ,PK OB ⊥于K .90PHO PKB ∠=∠=︒,60AOB ∠=︒, 120HPK ∴∠=︒,120DPE HPK ∠=∠=︒,DPH EPK ∴∠=∠,在OPH ∆和OPK ∆中, 90PHO PKB DPH EPKPD PE ∠=∠=︒⎧⎪∠=∠⎨⎪=⎩, ()DPH EPK AAS ∴∆≅∆,PH PK ∴=,则OP 是AOB ∠的角平分线; (3)解:结论:2OE OD =.理由:如图3中,在OB 上取一点T ,使得OT OD =,连接PT .OP 平分AOB ∠,POD POT ∴∠=∠,在POD ∆和POT ∆中, OD OT POD POT OP OP =⎧⎪∠=∠⎨⎪=⎩, ()POD POT SAS ∴∆≅∆,ODP OTP ∴∠=∠, PD OB ∥,180PDO AOB ∴∠+∠=︒,180DPE PEO ∠+∠=︒,60AOB ∠=︒,120DPE ∠=︒,120ODP ∴∠=︒,60PEO ∠=︒,120OTP ODP ∴∠=∠=︒,60PTE ∴∠=︒, 60TPE PET ∴∠=∠=︒, TP TE ∴=,PTE TOP TPO ∠=∠+∠,30POT ∠=︒,30TOP TPO ∴∠=∠=︒,OT TP ∴=,OT TE ∴=,2OE OD ∴=.。

人教版八年级上Unit 1周周清

八年级Unit 1校本训练班级__________ 姓名__________ 学号__________一、问答句配对。

(3*6=18)二、根据句意及首字母提示拼写单词。

(2*5=10)1. After working for a week ,I got ___________(厌倦的).2. Mr.Black ___________ (好像) to know the bad news. He looked so sad.3. When they ___________(hear) the good news ,they laughed and jumped happily.4. Lucy looked at the beautiful scarf and ___________(想知道) how much it cost.5. There are some d___________ between American English and British English. 用括号中所给单词的适当形式填空。

(2*7=14)6. She decided to walk up to the top of Mount Meng _________(exercise).7. There ________(be) many trees along the river five years ago, but now there are only a few.8.Lucy ________(get) to school at 7 a.m. every day, but this morning she was late. 9. I ________(real) enjoyed myself when I climbed Penang Hill.10. Tom didn't buy anything for ________(he) when he was in Beijing.11. There are some beautiful pictures on the wall.The artist ________(draw) them two years ago.12. I ________(forget) to tell him the news last week ,so he knew nothing about it.三、选词填空。

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赣州市厚德外国语学校初中部2017-2018学年度第一学期周考 5八年级英语试题欢迎参加考试,相信你能成功!Ⅰ、听力测试 根据独白内容完成下列句子,每个空格不超过3个单词。

(共5小题;每小题2分,满分10分)1. We had a talent show at the activity center on _____________________.2. There were _____________________ at the show.3. Liu Ying _____________________ and she got the first for the best performer.4. Wang Hong was _____________________ performer.5. Zhang Lei and his bird won first prize for ______________________. Ⅱ、单项选择(共5小题;每小题2分,满分10分) ( ) 1. Eating more vegetables_______ good _______ your health.A. are; toB. is; toC. is; forD. are; for ( ) 2. Bob is__________ than any other __________ in the badminton team.A. taller; boysB. tallest; boysC. taller; boyD. tallest; boy( ) 3. ---Did Nancy sing the best in the last singing competition? --- Yes, no one did __________. A. the best B. better C. the worst D. worse( ) 4. There are so many fashionable clothes in this new clothing shop. I can’t decide _________. A. where to go B. which one to choose C. how to do D. what to do( ) 5. If you like reading newspapers, you can _________ what ’s happening in the world in time. A. find out B. give out C. hang out D. put out III 、完形填空(共25小题;每小题1分,满分25分)AOur English teacher was like a friend to us, and we all liked her. One day she came into the classroom and shouted, “Who did this?” She held up a piece of br oken glass and asked, “Who ___1___ the window?” She hardly ever became angry, ___2___ this time she was.I broke the window. I did ___3___ by throwing a baseball. I didn’t want to admit (承认) it ___4___ I didn’t have enough money to pay for a big window like that.“My father will be ___5___,” I thought. At first I did n’t ___6___ my hand, but later something strong in my heart suddenly made me stand up. “I did it,” I said ___7___. How difficult it was for me to say that!My teacher ___8___ a book from one of our book shelves and then began walking to my___9___. I was afraid that she was going to punish (惩罚) me.“I know you like collecting ___10___very much,” she said, looking down at my ___11___ face. “Here is the book about collecting stamps that you are looking for. Now, the book is ___12___and I will not punish you. Remember, it’s because you ___13___ the truth.”I couldn’t believe it! My teacher wasn’t punishing me. I didn’t ___14___ to pay for the broken window. And I got my favorite book!As time goes, the book is gone, so is my wonderful teacher. But I will never forget the ___15___ the teacher gave me that day.班级:___________ 姓名:_____________ 考号:___________密 封 线 内 请 勿 答 题( ) 1. A. cleaned B. climbed C. broke D. mended( ) 2. A. and B. but C. so D. or( ) 3. A. them B. one C. that D. those( ) 4. A. because B. if C. when D. though( ) 5. A. pleased B. excited C. frightened D. angry( ) 6. A. put on B. put up C. put out D. put away( ) 7. A. terribly B. honestly C. easily D. hardly( ) 8. A. read B. wrote C. took D. bought( ) 9. A. bed B. desk C. room D. school( ) 10. A. books B. desks C. stamps D. windows( ) 11. A. nervous B. pretty C. happy D. square( ) 12. A. you B. your C. yours D. yourself( ) 13. A. talked B. spoke C. said D. told( ) 14. A. like B. want C. use D. need( ) 15. A. lesson B. glass C. window D. stampThe 2016 Talent Show in our school was a night to remember! It was a great success. Students, parents and teachers danced, sang, played instruments and 16 performances. There were more than thirty 17 . Pam Cook, the school principal, sang a country song. Jason Cruise won the first 18 for the best performance. When a 19 from our school magazine interviewed (采访) him, he said that singing was the most 20 thing to him. He sang all the time in his room alone or for his family 21 never for so many people. The prize for the funniest act went to Paul Black. He danced as a drunken (喝醉的) man without 22 . His classmates said he was the funniest boy in the class. Who played the piano the 23 ? Oh, Lucy! She 24 some popular songs. We all like to listen to her.Many thanks to the parents and student volunteers. They made this 25 show possible. Many thanks to all the people who helped. We look forward to next year’s show16. ___________ 17. ___________18. ____________19.___________20.___________21. ___________ 22. ___________23. ____________24.___________25.___________IV、阅读理解(共10小题,每小题2分,满分20分)AOne day a lonely girl found two weak birds when she was walking in the woods (树林).She took them home and put them in a small cage. She fed them with love and the birds grew strong. Every morning they greeted (打招呼) her with a beautiful song. The girl loved them very much and wanted their singing to last forever.One day the girl left the cage’s door open. The larger and stronger of the two birds flew out of the cage. The girl watched worriedly when it circled (盘旋) high above her. She was afraid that it would fly away and she would never see it again. So when it flew close, she grasped (抓) at it wildly. She was very happy that she held it tightly within her hand! Suddenly, she felt something had happened to the bird. She opened her hand and was surprised to find the bird was dead. Her love for the bird killed it.She noticed the other bird jumping in the cage. She could feel that it wanted to be free. It hoped to fly into the clear, blue sky. She lifted (举起) it from the cage and flew it into the air. The bird circled once, twice, three times…When the bird was flying happily in the sky, she was so glad. Just then the bird flew closer and sat softly on her shoulder. It sang the sweetest song she had ever heard.The fastest way to lose love is to hold it tightly, the best way to keep love is to let it fly!( ) 1. The girl loved the two birds very much because ________.A. they greeted her every morningB. they were hungry but very strongC. they liked staying in the cage quietlyD. they didn’t eat much food( ) 2. The underlined word tightly in the second and last paragraphs means ________ in Chinese.A. 开心地B. 慢慢地C. 紧紧地D. 轻松地( ) 3. The girl held the bird tightly in her hand because she was afraid that ________.A. it would be killedB. it was feeling coldC. the other bird felt lonelyD. it would fly away( ) 4. The girl felt that the other bird ________ when it was jumping in the cage.A. wanted to see what happenedB. wanted to be freeC. wanted to sing a beautiful song againD. wanted to eat something( ) 5. What does the story want to tell us?A. We should protect the endangered birds.B. The cage is used to keep birds.C. The birds are easily killed.D. To keep love is to let it fly.BThere is a Chinese saying: Time and tide wait for no man. Have too many things to do in too little time? Well, take it easy. 6 Here is some good advice. It will certainly help. If you can do all this, every your single day will be productive (高效率的).●Make a list --- 7 If you don’t have a list, create one.●Wor k first ---We often have one thing on the list, which is hanging over our heads and makes us worried. 8 .●Just do it---Those small things are easier to deal with. Complete them and cross them off the list.●9 ---Have small breaks, enjoy music, or even a snack when you are tired. Life is short. Enjoy your work.●Pack times---Which part of your time is most productive? When this time comes around, close your door so that it is just you and your work.●Re-list---1. 10 This is OK. Add them to tomorrow’s list with a star so that you will know they should be done first the next day. 2. By the day’s end you will have a rough (粗略的) idea of things you need to do tomorrow. Go ahead and list them. Tomorrow when you start fresh, you will not forget to do them.6. ________7. ________8. ________9. ________ 10. ________V、补全对话(共5小题;每小题2分,满分10分)W: Hi, Bob. 1. ______________________________________________________M: Yesterday? Oh, I watched a science show in the museum.W: 2. ______________________________________________________M: It was amazing. During the show, people could ask the scientists questions.W: 3. ______________________________________________________ What should I do if I want to watch the show?M: Well, you should buy a ticket first. And you’d better bring your notebook.W: 4. ______________________________________________________M: It’s only one dollar. I want to watch it again. I’ll go with you.W: OK. 5. ______________________________________________________M: At 8:30 at our school gate.VI、用所给单词的正确形式填空(共5小题;每小题2分,满分10分)1. Do you expect_____________ (learn) a lot from the talk show, Jessie?2. ---Do you mind my ____________ (sit) here? --- Sorry, it’s for Mr. Wu.3. Look, the ______________ (win) names are written on the notice board.4. I didn’t do very well in this exam. Unluckily, he did it ______________ (bad).5. The boy felt really glad because he got a chance ______________ (study) abroad (在国外).VII、翻译(共5小题;每小题3分,满分15分)1.所有这些表演都有一个共同点。

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