沪教版2019-2020学年七年级下学期期末教学质量测查试卷(I)卷

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(2)2019-2020下学期七年级英语期末测试卷(上海牛津版)(原卷版)

(2)2019-2020下学期七年级英语期末测试卷(上海牛津版)(原卷版)

七下期末测试卷II. Choose the best answer. (选择正确的答案, 填入答题纸内) (17分)22. Put the sentences into the correct order. Which of the following is correct for the underlined word in thesentence?A. /'ɔ:dəB. /'ɔdəC. /'a:dəD. /'i:də23.Which of the following underlined parts is different in pronunciation from others?A. Farmers grow plants in Spring.B. The wind is blowing gently.C. The water in the river flows quickly.D. The street will be less crowded.24. ______/raɪt/ down your hopes. The word of the sound ‘/raɪt/’ should be ______.A. RightB. WriteC. WhiteD. Light25. My mother has ____ orange hat. ____ hat fits her very well.A. an; AB. an; TheC. a; TheD. the; The26. ______ model ship is colorful. What about ______?A. Mine, yourB. My, yourC. My, yoursD. Mine, yours27. It would be very fun _______ us ________ art lessons at school.A. for; to haveB. for; havingC. to; havingD. to; to have28. As a saying goes, __________ is difficult if you put your heart into it.A. everythingB. somethingC. anythingD. nothing29. My cousin will ____ pass the examination with his teacher’s help.A. canB. couldC. is able toD. be able to30. I wear more clothes today, ______ I still catch a cold.A. becauseB. butC. soD. although31. Tony ________ his homework as __________ as Jenny.A. don’t do; carefullyB. does; carefulC. doesn’t; carefulD. doesn’t do; carefully32. Let’s start _______ stamps, shall we?A. collectB. collectingC. collectsD. collected33. Tom looked _________ and said nothing for a long time because he didn’t pass the test.A. happyB. comfortableC. disappointedD. proud34. The heavy smoke from the factory made us _______ sick.A. feltB. feelC. feelingD. to feel35. What will happen if you ______ a bowl of water outside in freezing weather?A. leaveB. will leaveC. are leavingD. left36. Bob often _________ his wealth (财富) in front of others.A. puts offB. sets offC. shows offD. turns off37. --- _______ is it from your home to your company?--- About half an hour’s drive.A. How longB. How muchC. How soonD. How far38. --- The price of the flats will be lower and lower.--- ____.A. I hope so.B. That’s a good idea.C. What a pity!D. You’re welcome. III.Complete the following passage with the words in the box. Each can only be used once(将下列单词填入空格。

专题02 相交线 平行线(选填、解答题)(上海精编)-七年级数学下学期期末冲刺卷(沪教版)(原卷版)

专题02 相交线 平行线(选填、解答题)(上海精编)-七年级数学下学期期末冲刺卷(沪教版)(原卷版)

专题02相交线 平行线(共56题)(选填、解答,含压轴题)上海各区期末试题为核心,上海名校试题为拓展一、单选题1.(2018·上海浦东新区·七年级期中)下列图形中,1∠和2∠不是同位角的是( )A .B .C .D .2.(2019·上海普陀区·七年级期中)如图,能与1∠构成同位角的有( )A .4个B .3个C .2个D .1个3.(2021·上海七年级期中)如图,下列说法中错误的是( )A .,GBD HCE ∠∠是同位角B .,ABD ACH ∠∠是同位角C .,FBC ACE ∠∠是内错角D .,GBC BCE ∠∠是同旁内角4.(2019·上海市培佳双语学校七年级月考)如图,在ABC 中,EB BC ⊥,BH AC ⊥,垂足分别为点B 和点H ,能表示点B 到直线AC 距离的是( )A .线段BE 的长度B .线段BH 的长度C .线段BA 的长度D .线段BC 的长度5.(2020·上海市静安区实验中学七年级课时练习)下列说法中不正确的是( )A .在同一平面内,经过一点能而且只能画一条直线与已知直线垂直B .一条线段有无数条垂线C .在同一平面内过射线的端点只能画一条直线与这条射线垂直D .如果直线AB 垂直平分线段CD ,那么CD 也垂直平分AB6.(2019·上海市培佳双语学校七年级月考)下列说法正确的是( )A .如果两个角相等,那么这两个角是对顶角;B .经过一点有且只有一条直线与已知直线平行;C .如果两条直线被第三条直线所截,那么同位角相等;D .联结直线外一点与直线上各点的所有线段中,垂线段最短.7.(2018·上海七年级期中)下列说法中,正确的是( )A .如果两个角相等,那么这两个角是对顶角B .连接直线外一点与直线上各点的所有线段中,垂线段最短C .如果两条直线被第三条直线所截,那么内错角相等D .经过一点有且只有一条直线与已知直线平行8.(2019·上海市市八初级中学七年级期中)下列语句中正确的有( )①经过一点,有且只有一条直线与已知直线平行;①有公共顶点且和为的两个角是邻补角;①两条直线被第三条直线所截,同旁内角互补;①不相交的两条直线叫做平行线;①直线外的一点到已知直线的垂线段叫做点到直线的距离;A .0个;B .1个;C .2个;D .3个;9.(2019·上海浦东新区·七年级月考)点A 在直线m 外,点B 在直线m 上,AB 、两点的距离记作a ,点A 到直线m 的距离记作b ,则a 与b 的大小关系是 ( ) A .a b > B .a b ≤C .a b ≥D .a b < 10.(2018·上海普陀区·)如图,已知1∠与2∠是内错角,则下列表达正确..的是( )A .由直线AD 、BC 被AC 所截而得到的; B .由直线AB 、CD 被BC 所截而得到的; C .由直线AB 、CD 被AC 所截而得到的; D .由直线AD 、BC 被CD 所截而得到的.11.(2019·上海浦东新区·)下列说法正确的是( )A .平面内两个相等的角是对顶角B .连接直线外的点和直线上的点的线段叫做点到直线的距离C .平面内相加之和等于180°的两个角是互为邻补角D .平面内经过直线上一点只有一条直线与已知直线垂直12.(2020·上海闵行区·七年级期末)点到直线的距离是指( )A .从直线外一点到这条直线的垂线段B .从直线外一点到这条直线的垂线,C .从直线外一点到这条直线的垂线段的长D .从直线外一点到这条直线的垂线的长13.(2020·上海松江区·七年级期末)如图,在下列条件中,能说明AC ①DE 的是( )A .①A =①CFDB .①BED =①EDFC .①BED =①A D .①A +①AFD =180°14.(2020·上海浦东新区·七年级期末)如图,BA//DE ,①B =30°,①D =40°,则①C 的度数是( )A .10°B .35°C .70°D .80°15.(2019·上海嘉定区·七年级期末)如图,将三角板的直角顶点放在直尺的一边上,如果170∠=︒,那么2∠的度数为( )A .10°B .15°C .20°D .25°16.(2019·上海杨浦区·七年级期末)下列说法中,正确的有( )①如果两条直线被第三条直线所载,那么内错角相等;①经过直线外的一点,有且只有一条直线与已知直线平行;①联结直线外一点与直线上各点的所有线段中,垂线段最短;①如果两个角相等,那么这两个角是对顶角. A .0个 B .1个 C .2个 D .3个17.(2020·上海外国语大学闵行外国语中学七年级期末)小明、小亮、小刚、小颖一起研究一道数学题.如图,已知EF AB ⊥,CD AB ⊥,G 是AC 边上一点(不与A 、C 重合), 小明说:“如果还知道CDG BFE ∠=∠,则能得到AGD ACB ∠=∠”;小亮说:“把小明的已知和结论倒过来,即由AGD ACB ∠=∠,可得到CDG BFE ∠=∠”;小刚说:“①AGD 一定大于①ACD”小颖说:“如果联结GF ,则GF 一定平行于AB”;他们四人中,有几个人的说法是正确的?( )A .1个B .2个C .3个D .4个18.(2019·上海市培佳双语学校七年级月考)如图,FCAD ⊥于C ,GB AD ⊥于B ,DCE A ∠=∠,那么与AGB ∠相等的角有( )A .2个B .1个C .4个D .3个19.(2020·上海市民办立达中学七年级月考)在同一平面内,设a 、b 、c 是三条互相平行的直线,已知a 与b 的距离为4cm ,b 与c 的距离为1cm ,则a 与c 的距离为( )A .1cmB .3cmC .5cm 或3cmD .1cm 或3cm20.(2019·江苏无锡市·七年级期中)如图,ABC 的角平分线CD 、BE 相交于F ,90A ∠=︒,//EG BC ,且CG EG ⊥于G ,下列结论:①2CEG DCB ∠=∠;①CA 平分BCG ∠;①ADC GCD ∠=∠;①12DFB CGE ∠=∠.其中正确的结论是( )A .①①①B .①①①C .①①D .①①二、填空题 21.(2020·上海同济大学实验学校七年级期中)如图,共有_____对同位角,有_____对内错角,有_____对同旁内角.22.(2018·上海七年级零模)已知,①B 与①A 互为邻补角,且①B=2①A ,那么①A 为________度.23.(2019·上海市松江区九亭中学七年级期中)平面内经过一点且垂直于已知直线的直线共有_______条 24.(2018·上海松江区·七年级期中)如图,已知BO DE ⊥,垂足为O .若42BOC ∠=︒,则AOD ∠=_______︒.25.(2017·上海长宁区·七年级期末)如图,直线AC 与直线BD 交于点O ,2AOB BOC ∠=∠,那么AOD ∠=______度.26.(2020·上海市静安区实验中学七年级课时练习)如图,已知AC①BC 于C ,CD①AB 于D ,BC=8,AC=6,CD=4.8,BD=6.4,AD=3.6.则:(1)点A 到直线CD 的距离为_________;(2)点A 到直线BC 的距离为_________;(3)点B 到直线CD 的距离为_________;(4)点B 到直线AC 的距离为_________;(5)点C 到直线AB 的距离为_________.27.(2019·上海长宁区·七年级期末)如图,已知直线,AB CD 相交于点O ,如果40BOD ∠=︒,OA 平分COE ∠,那么DOE ∠=________度.28.(2020·上海浦东新区·七年级期末)如图,直线a 、b 被直线c 所截(即直线c 与直线a 、b 都相交),且a//b ,若①1=118°,则①2的度数=_____度.29.(2018·上海浦东新区·七年级期末)如图,现将一块含有60°角的三角板的顶点放在直尺的一边上,若①1=①2,那么①1的度数为__________.30.(2018·上海虹口区·七年级期末)如图,如果AB①CD ,①1 = 30º,①2 = 130º,那么①BEC =_______ 度.31.(2018·上海松江区·)如图,//AD BC ,ABD ∆的面积等于2,1AD =,3BC =,则DBC ∆的面积是_______.32.(2017·上海长宁区·七年级期末)如图,已知AB CD ∥,那么A E F C ∠+∠+∠+∠=_______度.33.(2020·上海市建平中学七年级期末)直线//a b ,点A 、B 位于直线a 上,点C 、D 位于直线b 上,如果ABC ∆和CBD ∆的 面积之比是9:16,那么:AB CD ____.34.(2020·上海闵行区·七年级期末)如图,已知直线a ①b ①c ,①ABC 的顶点B 、C 分别在直线b 、c 上,如果①ABC =60°,边BC 与直线b 的夹角①1=25°,那么边AB 与直线a 的夹角①2=_____度.35.(2020·上海松江区·七年级期末)如图,直线a ①b ,点A ,B 位于直线a 上,点C ,D 位于直线b 上,且AB :CD =1:2,如果①ABC 的面积为10,那么①BCD 的面积为_____.36.(2019·上海奉贤区·七年级期末)如图,在BDE 中,90E ∠=︒,AB CD ∥,20ABE ∠=︒,则EDC ∠=__________.37.(2020·上海市民办立达中学七年级期末)如图,直线a①直线b ,且被直线c 所截,若①1=(3x+70)度,①2=(2x+10)度,则x 的值为________.38.(2018·上海杨浦区·七年级期末)如图,利用直尺和三角尺过直线外一点画已知直线的平行线,第1步:画直线AB ,将三角尺的一边紧靠直线AB ,将直尺紧靠三角尺的另一边:第2步:将三角尺沿直尺下移:第3步:沿三角尺原先紧靠直线AB 的那一边画直线CD .这样就得到//AB CD .这种画平行线的依据是________.三、解答题39.(2019·上海普陀区·七年级期末)如图 ,已知 AB ① CD , ∠CDE = ∠ABF ,试说明 DE ①BF 的理由.解:因为 AB ① CD (已知),所以∠CDE = ( ).因为∠CDE = ∠ABF (已知),得 = (等量代换),所以 DE ① BF ( ).40.(2020·上海浦东新区·七年级期末)如图,已知①COF+①C =180°,①C =①B .说明AB//EF 的理由.41.(2020·上海松江区·七年级期末)如图,已知在①ABC 中,点D 为AC 边上一点,DE ①AB 交边BC 于点E ,点F 在DE 的延长线上,且①FBE =①ABD ,若①DEC =①BDA .(1)试说明①BDA =①ABC 的理由;(2)试说明BF ①AC 的理由.42.(2018·上海杨浦区·七年级期末)如图,已知在ABC ∆中,FG EB ,23∠∠=,说明180EDB DBC ∠+∠=︒的理由.解:①FG EB (已知),①_________=_____________(____________________).①23∠∠=(已知),①_________=_____________(____________________).①DE BC ∥(___________________).①180EDB DBC ∠+∠=︒(_________________________).43.(2019·上海崇明区·七年级期末)如图,已知A C ∠=∠,AB DC ,试说明E F ∠=∠的理由.44.(2019·上海嘉定区·七年级期末)如图,已知A ∠的两边与D ∠的两边分别平行,且D ∠比A ∠的2倍多30°,求D ∠的度数.45.(2019·上海嘉定区·七年级期末)阅读并填空.已知:如图,线BCF 、线AEF 是直线,,12,34AB CD ∠=∠∠=∠∥.试说明AD BC ∥.解:AB CD ∥(已知)4∴∠=∠______(_______)34∠∠=(已知)3∴∠=∠______(_______)12∠=∠(已知)12CAE CAE ∴∠+∠=∠+∠(_______)即BAE ∠=∠________3∴∠=∠______(_______)//AD BC ∴(_____)46.(2020·上海市民办立达中学七年级期末)如图,已知AB①CD ,点E 在BC 延长线上,联结AE 交CD 于点F ,若①1=①2,①3=①4,试说明AD①BE 的理由.47.(2017·上海虹口区·七年级期末)说理填空:如图,点E 是DC 的中点,EC =EB ,①CDA =120°,DF //BE ,且DF 平分①CDA ,若①BCE 的周长为18cm ,求DC 的长.解: 因为DF 平分①CDA,(已知)所以①FDC =12①_________.(____________________) 因为①CDA =120°,(已知)所以①FDC =______°.因为DF //BE ,(已知)所以①FDC =①_________=60°.(____________________________________)又因为EC =EB,(已知)所以①BCE 为等边三角形.(________________________________________)因为①BCE 的周长为18cm,(已知) 所以BE =EC =BC =6 cm.因为点E 是DC 的中点,(已知) 所以DC =2EC =12 cm .48.(2019·上海长宁区·七年级期末)如图,已知AB CD ∕∕,,130110A C ∠=∠=︒︒,求APC ∠的度数.(1)填空,在空白处填上结果或者理由.解:过点P 作PQ AB ∕∕,(如图)得1A ∠+∠=___________°, ( )又因为130A ∠=︒,(已知)所以1∠=___________°.因为,PQ AB AB CD ∕∕∕∕,所以PQ CD ∕∕, ( )又因为110C ∠=︒,(已知)所以2∠=___________°,所以12APC ∠=∠+∠=___________°.(2)请用另一种解法求APC ∠的度数.49.(2018·上海金山区·七年级期末)已知:如图,//CD EF ,BFE DHG ∠=∠,那么EG 与AB 平行吗?为什么?50.(2019·上海市培佳双语学校七年级月考)已知,如图1,四边形ABCD ,90D C ∠=∠=︒,点E 在BC 边上,P 为边AD 上一动点,过点P 作PQ PE ⊥,交直线DC 于点Q .(1)当70PEC ∠=︒时,求DPQ ∠;(2)当4PEC DPQ ∠=∠时,求APE ∠;(3)如图3,将PDQ 沿PQ 翻折使点D 的对应点D 落在BC 边上,当40QD C '∠=︒时,请直接写出PEC ∠的度数,答:______.51.(2020·上海静安区·)(1)如图a 所示,//AB CD ,且点E 在射线AB 与CD 之间,请说明AEC A C ∠=∠+∠的理由.(2)现在如图b 所示,仍有//AB CD ,但点E 在AB 与CD 的上方,①请尝试探索1∠,2∠,E ∠三者的数量关系.①请说明理由.52.(2018·上海普陀区·)如图1,AB CD ∥ ,130PAB ∠=︒ ,120PCD ∠=︒ ,求APC ∠的度数.小明的思路是:过P 作//PE AB ,通过平行线性质来求APC ∠.(1)按小明的思路,求APC ∠的度数;(问题迁移)(2)如图2,//AB CD ,点P 在射线OM 上运动,记PAB α∠=,PCD β∠=,当点P 在B 、D 两点之间运动时,问APC ∠与α、β之间有何数量关系?请说明理由;(问题应用):(3)在(2)的条件下,如果点P 在B 、D 两点外侧运动时(点P 与点O 、B 、D 三点不重合),请直接写出APC ∠与α、β之间的数量关系.53.(2018·上海金山区·七年级期中)问题情境:如图1,AB CD ∥,130PAB ∠=︒,120PCD ∠=︒,求APC ∠的度数.小明的思路是:如图2,过P 作PE AB ,通过平行线性质,可得APC ∠=______.问题迁移:如图3,AD BC ∥,点P 在射线OM 上运动,ADP α∠=∠,BCP β∠=∠.(1)当点P 在A 、B 两点之间运动时,CPD ∠、α∠、β∠之间有何数量关系?请说明理由.(2)如果点P 在A 、B 两点外侧运动时(点P 与点A 、B 、O 三点不重合),请你直接写出CPD ∠、α∠、β∠之间有何数量关系.54.(2019·上海黄浦区·七年级期中)(1)如图1,已知直线//m n ,在直线n 上取A B 、两点,C P 、为直线m 上的两点,无论点C P 、移动到任何位置都有:ABC S ____________ABP S △(填“>”、“<”或“=”)(2)如图2,在一块梯形田地上分别要种植大豆(空白部分)和芝麻(阴影部分),若想把种植大豆的两块地改为一块地,且使分别种植两种植物的面积不变,请问应该怎么改进呢?写出设计方案,并在图中画出相应图形并简述理由.(3)如图3,王爷爷和李爷爷两家田地形成了四边形DEFG,中间有条分界小路(图中折线ABC),左边区域为王爷爷的,右边区域为李爷爷的。

:2020-2021学年七年级数学下学期期末测试卷(沪教版)02 (解析版)

:2020-2021学年七年级数学下学期期末测试卷(沪教版)02 (解析版)

2020-2021学年七年级数学下学期期末测试卷02【沪教版】数学一.选择题(每小题3分,共18分)1.(2020春•浦东新区期末)下列语句错误的是()A.无理数都是无限小数B.=±2C.有理数和无理数统称实数D.任何一个正数都有两个平方根【考点】实数.【分析】根据无理数的定义,平方根的定义,实数的分类,即可解答.【解答】解:A、无理数是无限不循环小数,原说法正确,故此选项不符合题意;B、=2,原说法错误,故此选项符合题意;C、有理数和无理数统称实数,原说法正确,故此选项不符合题意;D、任何一个正数都有两个平方根,原说法正确,故此选项不符合题意;故选:B.【点评】本题考查了无理数的定义,平方根的定义,实数的分类,解题的关键是掌握无理数的定义,平方根的定义,实数的分类等知识.2.(2020秋•浦东新区期末)如图,不能推断AD∥BC的是()A.∠1=∠5 B.∠2=∠4C.∠3=∠4+∠5 D.∠B+∠1+∠2=180°【考点】平行线的判定.【分析】根据平行线的判定方法分别进行分析即可.【解答】解:A、∠1=∠5可根据内错角相等两直线平行可得AD∥BC,故此选项不合题意;B、∠2=∠4可根据内错角相等两直线平行可得AB∥DC,故此选项符合题意;C、∠3=∠4+∠5可根据同位角相等两直线平行可得AD∥BC,故此选项不合题意;D、∠B+∠1+∠2=180°可根据同旁内角互补,两直线平行可得AD∥BC,故此选项不合题意;故选:B.【点评】此题主要考查了平行线的判定,关键是掌握平行线的判定定理.3.(2018春•长宁区期末)已知两条直线被第三条直线所截,下列四个说法中正确的个数是()(1)同位角的角平分线互相平行;(2)内错角的角平分线互相平行(3)同旁内角的角平分线互相垂直;(4)邻补角的角平分线互相垂直A.4个B.3个C.2个D.1个【考点】余角和补角;垂线;同位角、内错角、同旁内角;平行线的判定.【分析】根据平行线的判定定理解答.【解答】解:(1)两条平行直线被第三条直线所截,同位角的角平分线互相平行,故错误.(2)两条平行直线被第三条直线所截,内错角的角平分线互相平行,故错误.(3)两条平行直线被第三条直线所截,同旁内角的角平分线互相垂直,故错误.(4)邻补角的角平分线互相垂直,故本选项正确.综上所述,正确的说法只有1个.故选:D.【点评】考查了平行线的判定,余角和补角,同位角、内错角、同旁内角.关键是熟练掌握平行线的判定定理.4.(2020春•浦东新区期末)下列说法中错误的是()A.有两个角及它们的夹边对应相等的两个三角形全等B.有两个角及其中一个角的对边对应相等的两个三角形全等C.有两条边及它们的夹角对应相等的两个三角形全等D.有两条边及其中一条边的对角对应相等的两个三角形全等【考点】全等三角形的判定.【分析】根据全等三角形的判定对各选项分析判断后利用排除法求解.【解答】解:A、有两个角及它们的夹边对应相等的两个三角形全等,是“ASA”,说法正确;B、两个角及其中一个角的对边对应相等的两个三角形全等,是“AAS”,说法正确;C、有两条边及它们的夹角对应相等的两个三角形全等,是“SAS”,说法正确;D、有两条边及其中一条边的对角对应相等的两个三角形不一定全等,说法错误;故选:D.【点评】本题考查了全等三角形的判定,是基础题,熟记全等三角形判定方法是解题的关键,要注意“SSA”不能判定三角形全等.5.(2018春•虹口区期末)如图,已知棋子“车”的坐标为(﹣2,3),棋子“马”的坐标为(1,3),那么棋子“炮”的坐标为()A.(3,0)B.(3,1)C.(3,2)D.(2,2)【考点】坐标确定位置.【分析】根据平面直角坐标系,找出相应的位置,然后写出坐标即可.【解答】解:根据棋子“车”的坐标为(﹣2,3),棋子“马”的坐标为(1,3)可得:棋子“炮”的坐标为(3,2).故选:C.【点评】本题考查坐标确定位置,本题解题的关键就是确定坐标原点和x,y轴的位置及方向.6.(2020春•松江区期末)如图,关于△ABC,给出下列四组条件:①△ABC中,AB=AC;②△ABC中,∠B=56°,∠BAC=68°;③△ABC中,AD⊥BC,AD平分∠BAC;④△ABC中,AD⊥BC,AD平分边BC.其中,能判定△ABC是等腰三角形的条件共有()A.1组B.2组C.3组D.4组【考点】等腰三角形的性质;等腰三角形的判定.【分析】根据等腰三角形的判定定理逐个判断即可.【解答】解:①、∵△ABC中,AB=AC,∴△ABC是等腰三角形,故①正确;②、∵△ABC中,∠B=56°,∠BAC=68°,∴∠C=180°﹣∠BAC﹣∠B=180°﹣68°﹣56°=56°,∴∠B=∠C,∴△ABC是等腰三角形,故②正确;③∵△ABC中,AD⊥BC,AD平分∠BAC,∴∠BAD=∠CAD,∠ADB=∠ADC,∵∠B+∠BAD+∠ADB=180°,∠C+∠CAD+∠ADC=180°,∴∠B=∠C,∴△ABC是等腰三角形,故③正确;④、∵△ABC中,AD⊥BC,AD平分边BC,∴AB=AC,∴△ABC是等腰三角形,故④正确;即正确的个数是4,故选:D.【点评】本题考查了线段垂直平分线的性质,三角形的内角和定理,等腰三角形的判定等知识点,能灵活运用定理进行推理是解此题的关键.二.填空题(每小题2分,共28分)7.(2021春•青浦区期中)把表示成幂的形式为.【考点】分数指数幂.【分析】利用=(a≥0),再根据a﹣p=计算.【解答】解:=7.故答案为:7.8.(2021春•青浦区期中)比较大小:π(填“<”“>”或“=”).【考点】算术平方根;实数大小比较.【分析】判断出、π与4的大小关系,即可判断出、π的大小关系.【解答】解:∵>=4,π<4,∴>π.故答案为:>.【点评】此题主要考查了实数大小比较的方法,要熟练掌握,解答此题的关键是判断出、π与4的大小关系.9.(2020春•嘉定区期末)已知有理数a,b,c在数轴上的位置如图所示,那么a+b﹣c0.(填“>”,“<”“≥”,“≤“或“=”)【考点】数轴;有理数的加减混合运算;实数大小比较.【分析】由数轴可知,a<0,b<0,c>0,且|a|>|b|>|c|,所以a+b﹣c<0.【解答】解:由数轴可知,a<0,b<0,c>0,且|a|>|b|>|c|,∴a+b﹣c<0.故答案为:<.【点评】本题考查了数轴、绝对值与有理数的加减混合运算,正确理解有理数的加减法法则是解题的关键.10.(2020春•浦东新区期末)计算:|﹣2|+=.【考点】实数的运算.【分析】根据绝对值的性质和立方根的定义计算可得答案.【解答】解:原式=2﹣2=0,故答案为:0.【点评】本题主要考查实数的运算,解题的关键是掌握绝对值的性质和立方根的定义.11.(2020春•浦东新区期末)如图,直线a∥b且直线c与a、b相交,若∠1=70°,则∠2=°.【考点】平行线的性质.【分析】利用平行线的性质求出∠3即可解决问题.【解答】解:如图,∵a∥b,∴∠1=∠3,∵∠1=70°,∴∠3=70°,∴∠2=180°﹣∠3=110°,故答案为110.【点评】本题考查平行线的性质,解题的关键是熟练掌握基本知识,属于中考常考题型.12.(2019春•青浦区期末)如图,直线AB、CD相交于点O,OE平分∠BOC.如果∠BOE=65°,那么∠AOC=度.【考点】角平分线的定义;对顶角、邻补角.【分析】先根据角平分线的定义,求出∠BOC的度数,再根据邻补角的和等于180°求解即可.【解答】解:∵OE平分∠BOC,∠BOE=65°,∴∠BOC=2∠BOE=2×65°=130°,∴∠AOC=180°﹣∠BOC=180°﹣130°=50°.故答案为:50.【点评】本题考查了角平分线的定义以及邻补角的定义.解题的关键是掌握角平分线的定义以及邻补角的和等于180°,是基础题,比较简单.13.(2020春•闵行区期末)如图,已知直线a∥b∥c,△ABC的顶点B、C分别在直线b、c上,如果∠ABC =60°,边BC与直线b的夹角∠1=25°,那么边AB与直线a的夹角∠2=度.【考点】平行线的性质.【分析】证明∠ABC=∠1+∠2即可解决问题.【解答】解:如图,∵a∥b∥c,∴∠2=∠3,∠1=∠4,∴∠ABC=∠2+∠1.∵ABC=60°,∠1=25°,∴∠2=60°﹣25°=35°,故答案为35.【点评】本题考查平行线的性质,解题的关键是熟练掌握基本知识,属于中考常考题型.14.(2020秋•长宁区期末)在△ABC中,∠ABC=48°,点D在BC边上,且满足∠BAD=18°,DC=AB,则∠CAD=度.【考点】三角形内角和定理;三角形的外角性质;全等三角形的判定与性质;等腰三角形的判定.【分析】作辅助线,构建等腰三角形ABE,证明AB=BE,再证明△ABD≌△ACE,得∠CAE=∠BAD=18°,根据角的和可得结论.【解答】解:如图,在线段CD上取一点E,使CE=BD,连接AE,∴CE+DE=BD+DE,即CD=BE,∵CD=AB,∴AB=BE,∴∠BAE=∠BEA,∵∠B=48°,∴∠BAE=∠BEA=66°,∵∠B=48°,∠BAD=18°,∴∠ADE=66°=∠AED,∴AD=AE,∠ADB=∠AEC,在△ABD和△ACE中,,∴△ABD≌△ACE(SAS),∴∠EAC=∠BAD=18°,∴∠CAD=∠CAE+∠DAE=∠BAD+∠DAE=66°.故答案为:66.【点评】本题考查了三角形的内角和定理,三角形全等的性质和判定,等腰三角形的性质和判定,正确作辅助线,构建等腰三角形是本题的关键.15.(2020春•浦东新区期末)直角坐标平面内,经过点A(2,﹣3)并且垂直于y轴的直线可以表示为直线.【考点】点的坐标.【分析】垂直于y轴的直线,纵坐标相等,都为﹣3,所以为直线:y=﹣3.【解答】解:由题意得:经过点A(2,﹣3)且垂直于y轴的直线可以表示为直线为:y=﹣3,故答案为:y=﹣3.【点评】此题考查了坐标与图形的性质,解题的关键是抓住过某点的坐标且垂直于y轴的直线的特点:纵坐标相等.16.(2018秋•奉贤区期末)已知:如图,在△ABC中,AB=AC,要使BD=CE,还需添加一个条件,这个条件可以是.【考点】全等三角形的判定与性质;等腰三角形的性质.【分析】先证△ABD≌△ACE(SAS),再由全等三角形的性质即可得出结论.【解答】解:添加条件:AD=AE,理由如下:在△ABD和△ACE中,,∴△ABD≌△ACE(SAS),∴BD=CE,故答案为:AD=AE(答案不唯一).【点评】本题考查了全等三角形的判定与性质;熟练掌握全等三角形的判定方法是解题的关键.17.(2020春•浦东新区期末)如图,△ABC和△BDE都是等边三角形,且点E在AD边上,已知∠ECB=35°.则∠ABE=.【考点】全等三角形的判定与性质;等腰三角形的性质.【分析】先证△ABD≌△ACE(SAS),再由全等三角形的性质即可得出结论.【解答】解:添加条件:AD=AE,理由如下:在△ABD和△ACE中,,∴△ABD≌△ACE(SAS),∴BD=CE,故答案为:AD=AE(答案不唯一).【点评】本题考查了全等三角形的判定与性质;熟练掌握全等三角形的判定方法是解题的关键.18.(2019春•崇明区期末)如果等腰三角形的两条边长分别等于4厘米和8厘米,那么这个等腰三角形的周长等于厘米.【考点】三角形三边关系;等腰三角形的性质.【分析】分两种情况讨论:当4厘米是腰时或当8厘米是腰时.根据三角形的三边关系,知4,4,8不能组成三角形,应舍去.【解答】解:当4厘米是腰时,则4+4=8,不能组成三角形,应舍去;当8厘米是腰时,则三角形的周长是4+8×2=20(厘米).故答案为:20.【点评】本题考查了等腰三角形的性质和三角形的三边关系;已知没有明确腰和底边的题目一定要想到两种情况,分类进行讨论,还应验证各种情况是否能构成三角形进行解答,这点非常重要,也是解题的关键.此类题不要漏掉一种情况,同时注意看是否符合三角形的三边关系.19.(2019秋•杨浦区期末)若等腰三角形一腰上的高与另一腰的夹角等于30°,则此三角形的顶角为度.【考点】等腰三角形的性质.【分析】等腰三角形的高相对于三角形有三种位置关系,三角形内部,三角形的外部,三角形的边上.根据条件可知第三种高在三角形的边上这种情况不成了,因而应分两种情况进行讨论.【解答】解:当高在三角形内部时(如图1),顶角是60°;当高在三角形外部时(如图2),顶角是90°+30°=120°.故答案为:60或120.【点评】此题主要考查等腰三角形的性质,熟记三角形的高相对于三角形的三种位置关系是解题的关键,本题易出现的错误是只是求出60°一种情况,把三角形简单的认为是锐角三角形.因此此题属于易错题.20.(2019春•普陀区期末)如图,在△ABC中,AB=AC,BD平分∠ABC,交AC于点D、过点D作DE ∥AB,交BC于点E,那么图中等腰三角形有个.【考点】平行线的性质;等腰三角形的判定与性质.【分析】根据等腰三角形的判定和性质定理以及平行线的性质即可得到结论.【解答】解:∵AB=AC,∴△ABC是等腰三角形;∵DE∥AB,∴△CED是等腰三角形;∴∠BDE=∠ABD,∵BD平分∠ABC,∴∠ABD=∠CBD,∴∠CBD=∠BDE,∴△EBD是等腰三角形;则图中等腰三角形的个数有3个;故答案为:3.【点评】此题考查了等腰三角形判定和性质、角平分线的性质、平行线的性质,由已知条件利用相关的性质求得各个角相等是本题的关键.三.解答题(第21题~第24题每小题5分,第25题~第27题每小题8分,第28题10分)21.(2020春•松江区期末)计算:3÷﹣27+()﹣1﹣(+2)0.【考点】实数的运算;分数指数幂;零指数幂;负整数指数幂.【分析】直接利用零指数幂的性质和二次根式的性质、负指数幂的性质分别化简得出答案.【解答】解:原式=﹣3+﹣1=1﹣.【点评】此题主要考查了实数运算,正确化简各数是解题关键.22.(2019春•嘉定区期末)利用幂的性质计算:(25×75)÷14(结果表示为幂的形式).【考点】分数指数幂.【分析】先根据积的乘方运算法则化简,再根据幂的乘方运算法则以及同底数幂的除法法则计算即可.【解答】解:(25×75)÷14====.【点评】本题主要考查了分数指数幂,熟记幂的运算法则是解答本题的关键.23.(2014秋•昆山市校级期末)已知3﹣的整数部分是a,小数部分是b,求500a2+(2+)ab+4的值.【考点】估算无理数的大小.【分析】根据1<<2,得a=1,b=2﹣,再进一步求500a2+(2+)ab+4的值.【解答】解:∵1<<2,∴a=1,b=2﹣,∴500a2+(2+)ab+4=500×12+(2+)×1×(2﹣)+4=500+4﹣3+4=505.【点评】此题考查了二次根式的化简以及计算,同时考查了学生的估算能力,“夹逼法”是估算的一般方法,也是常用方法.24.(2020春•松江区期末)如图,已知在△ABC中,点D为AC边上一点,DE∥AB交边BC于点E,点F 在DE的延长线上,且∠FBE=∠ABD,若∠DEC=∠BDA.(1)试说明∠BDA=∠ABC的理由;(2)试说明BF∥AC的理由.【考点】平行线的判定与性质.【分析】(1)根据平行线的性质得出∠DEC=∠ABC,根据∠DEC=∠BDA求出∠BDA=∠ABC即可;(2)求出∠ABC=∠FBD,根据∠BDA=∠ABC得出∠BDA=∠FBD,根据平行线的判定得出即可.【解答】解:(1)理由是:∵DE∥AB,∴∠DEC=∠ABC,∵∠DEC=∠BDA,∴∠BDA=∠ABC;(2)∵∠ABD=∠FBE,∴∠ABD+∠DBE=∠FBE+∠DBE,即∠ABC=∠FBD,∵∠BDA=∠ABC,∴∠BDA=∠FBD,∴BF∥AC.【点评】本题考查了平行线的性质和判定,能灵活运用平行线的判定和性质定理进行推理是解此题的关键.25.(2020春•浦东新区校级期末)阅读并填空:如图,在△ABC中,AB=AC,AD⊥BC,垂足为D,点E在AD上,点F在AD的延长线上,且CE∥BF,试说明DE=DF.∵AB=AC,AD⊥BC,∴BD=(),∵CE∥BF,∴∠CED=().(完成以下说理过程)【考点】平行线的性质;等腰三角形的性质.【分析】根据已知条件判定两三角形全等并利用全等三角形的对应边相等得到线段DE=DF的长即可.【解答】解:∵AB=AC,AD⊥BC,∴BD=CD,(等腰三角形底边上的高与底边上的中线、顶角的平分线重合),∵CE∥BF,∴∠CED=∠BFE,(两直线平行,内错角相等),∠EDC=∠BDF,在△BFD和△CED中,,∴△BFD≌△CED(AAS),∴DE=DF(全等三角形对应边相等).故答案为:CD,等腰三角形底边上的高与底边上的中线、顶角的平分线重合,∠BFE,两直线平行,内错角相等.【点评】本题考查了等腰三角形的性质,全等三角形的判定与性质,通常利用全等三角形证明线段相等或角相等.26.(2020春•松江区期末)在平面直角坐标系中,已知点A的坐标为(3,2).设点A关于y轴的对称点为B,点A关于原点O的对称点为C,点A绕点O顺时针旋转90°得点D.(1)点B的坐标是;点C的坐标是;点D的坐标是;(2)顺次联结点A、B、C、D,那么四边形ABCD的面积是.【考点】三角形的面积;关于x轴、y轴对称的点的坐标;关于原点对称的点的坐标;坐标与图形变化﹣旋转.【分析】(1)根据在平面直角坐标系中,点关于x轴对称时,横坐标不变,纵坐标为相反数,关于y轴对称时,横坐标为相反数,纵坐标不变,关于原点对称时,横纵坐标都为相反数,以及利用旋转的性质即可解答本题.(2)利用矩形面积减去两个三角形求出即可.【解答】解:(1)∵点A的坐标为(3,2),点A关于y轴对称点为B,∴B点坐标为:(﹣3,2),∵点A关于原点的对称点为C,∴C点坐标为:(﹣3,﹣2),∵点A绕点O顺时针旋转90°得点D,∴D点坐标为:(2,﹣3),故答案为:(﹣3,2),(﹣3,﹣2),(2,﹣3);(2)顺次连接点A、B、C、D,那么四边形ABCD的面积是:5×6﹣×1×5﹣×1×5=25.故答案为:25.【点评】本题考查了在平面直角坐标系中,点关于x轴,y轴及原点对称时横纵坐标的符号以及图形面积求法,正确掌握点的变换坐标性质是解题关键.27.(2020春•浦东新区期末)如图,点A、B分别在射线ON、OM上运动(不与点O重合),AC、BC分别是∠BAO和∠ABO的角平分线,BC延长线交ON于点G.(1)若∠MON=60°,则∠ACB=°;若∠MON=90°,则∠ACB=°;(2)若∠MON=n°.请求出∠ACG的度数;(用含n的代数式表示)【考点】列代数式;三角形内角和定理.【分析】(1)由三角形内角和定理和角平分线的定义即可得到结论;(2)由三角形内角和定理和角平分线的定义即可得到结论.【解答】解:(1)∵∠MON=60°,∴∠OBA+∠OAB=120°,∵∠OBA、∠OAB的平分线交于点C,∴∠ABC+∠BAC=×120°=60°,∴∠ACB=180°﹣60°=120°,∵∠MON=90°,∴∠OBA+∠OAB=90°,∵∠OBA、∠OAB的平分线交于点C,∴∠ABC+∠BAC=×90°=45°,∴∠ACB=180°﹣45°=135°;(2)在△AOB中,∠OBA+∠OAB=180°﹣∠AOB=180°﹣n°,∵∠OBA、∠OAB的平分线交于点C,∴∠ABC+∠BAC=(∠OBA+∠OAB)=(180°﹣n°),即∠ABC+∠BAC=90°﹣n°,∴∠ACB=180°﹣(∠ABC+∠BAC)=180°﹣(90°﹣n°)=90°+n°,∴∠ACG=180°﹣(90°+n°)=90°﹣n°.故答案为:120,135.【点评】本题考查了三角形的内角和,角平分线的定义,正确的识别图形是解题的关键.28.(2020秋•奉贤区期末)已知:在△ABC中,AB=6,AC=5,△ABC的面积为9.点P为边AB上动点,过点B作BD∥AC,交CP的延长线于点D.∠ACP的平分线交AB于点E.(1)如图1,当CD⊥AB时,求P A的长;(2)如图2,当点E为AB的中点时,请猜想并证明:线段AC、CD、DB的数量关系.【考点】全等三角形的判定与性质.【分析】(1)根据三角形的面积公式得出CP,进而利用勾股定理得出P A即可;(2)延长BD,过A作AO∥BC,利用平行四边形的性质解答即可.【解答】解:(1)∵CD⊥AB,△ABC的面积为9,AB=6,∴,∴CP=3,由勾股定理得:P A=;(2)延长BD,过A作AO∥BC,∵BD∥AC,AO∥BC,∴四边形AOBC是平行四边形,∵E是AB的中点,∴延长CE肯定可以过点O点,∴∠OCD=∠ACO=∠COD,∴CD=DO,∵DO+DB=AC,∴AC=CD+DB.【点评】考查了全等三角形的判定和性质和平行四边形的性质,解题的关键是根据平行四边形的性质进行解答,属于中考常考题型.。

上海市浦东新区川沙中学南校(五四制)2019-2020学年七年级下学期期末英语试题(解析版)

上海市浦东新区川沙中学南校(五四制)2019-2020学年七年级下学期期末英语试题(解析版)

2019学年第二学期期未学业检测年级英语学科(满分100分, 时间75分钟)(考生注意∶试题均采用连续编号, 请将答案写在答题纸上, 写在试卷上不计分)Part 1 Listening(25%) 第一部分听力I. Listening Comprehension(听力理解)A. Listen and choose the right picture. (根据你听到的内容, 选出相应的图片)A. B. C.D. E. F.1. _______2. _________3. ________4. __________5. __________B. Listen to the dialogue and choose the best answer to the question you hear. (根据你听到的对话和问题, 选出最恰当的答案)6. A. Spring B. Summer C. Autumn D. Winter7. A. 120 yuan B. 200 yuan C. 300 yuan D. 320 yuan8. A. In the park B. In the cinemaC. At the railway stationD. At the school gate9. A. A shop assistant B. A secretary C. A librarian D. A teacher10. A. Sunny B. Snowy C. Cloudy D. Windy11. A. Because he doesn't like Betty.B. Because he will meet a guest tonight.C. Because he doesn't have a car.D. Because he is very tired.12. A. There is something wrong with the girl's watch.B. The boy doesn't want to listen to the speech.C. There is something wrong with the boy's watch.D. There's something wrong with the boy's mobile phone.C. Listen to the passage and tell whether the following statements are true or false. (判断下列句子是否符合你听到的短文内容, 符合的用"T"表示, 不符合的用"F"表示)13. A hobby can help you enjoy life, and all hobbies are very popular.14. Paper cutting and model making need your concentration and attention.15. You can always find a hobby for yourself and it will make you live happily.16. If you like working with your hands, you may enjoy collecting things.17. Painting and clay modeling are creative hobbies.D. Listen to the passage and complete the following sentences. (听短文, 完成下列内容, 每空格限填一词)18. Water is very important to _________ things. Without water, there would be no ________ on Earth.19. Water ________most parts of the Earth. It is almost _________.20. Sea water is not good for ________ or ___________.21. The world now is water is _______ because we are wasting the clean fresh water and our need for _________.Part II Phonetics, Vocabulary and Grammar第二部分语音, 词汇和语法II. Look at the phonetic symbol and fill in the blanks. (看音标写单词)1. The _________ between the two teams is very fierce. [ˌkɒmpəˈtɪʃn]【答案】competition【解析】【详解】句意:两队之间的竞争非常激烈。

2019-2020学年人教部编版初一语文下册期末检测试题(含答案)

2019-2020学年人教部编版初一语文下册期末检测试题(含答案)

2019-2020学年七年级语文下学期期末检测试题满分120分,考试时间120分钟一、积累与运用(共24分)1.根据拼音写汉字(2分)阅读启迪人生。

读臧克家的《说和做》,我们了解到闻一多先生钻探古代典籍时qièérbùshě的精神;读茨威格的《伟大的悲剧》可以chùmō到探险者的精神世界。

2.没有语病的一项是()(2分)A.走进美丽的环城湖公园,我禁不住停下脚步驻足欣赏。

B.中国体育健儿在赛场上努力拼搏,争创佳绩。

C.读者深受喜爱的鲁迅先生不凡的一生中,留下了大量文风质朴、寓意深刻的作品。

D.这是一批有志之士,他们有不畏劳苦的精神,勇敢地向着世界科学高峰。

3.下列说法不正确的一项是()(2分)A.对联“四面荷花三面柳,一城山色半城湖”是济南大明湖小沧浪园联。

“人有恒言,皆曰‘天下国家’”出自《孟子》。

B.“往来无白丁”中的“白丁”指平民、老百姓;“待到重阳日”中的“重阳日”是指重阳节又称菊花节。

C.《孙权劝学》节选自南宋政治家、史学家司马光主持编纂的纪传体通史《资治通鉴》。

D.《黄河颂》《驿路梨花》《围城》《假如生活欺骗了你》的作者分别是光未然、彭荆风、钱锺书、普希金。

4.《骆驼祥子》中祥子共有三次买车的经历,根据你阅读的内容填写下表:(3分)5.按要求填空(15分)(1),壮士十年归。

(《木兰诗》)(2)念天地之悠悠,。

(陈子昂《登幽州台歌》)(3),何人不起故园情。

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专题01 实数(选填、解答题)(上海精编)-七年级数学下学期挑战满分期末冲刺卷(沪教版)(解析版)

专题01 实数(选填、解答题)(上海精编)-七年级数学下学期挑战满分期末冲刺卷(沪教版)(解析版)

专题01实数(共56题)(选填、解答题)上海各区期末试题为核心,上海名校试题为拓展一、单选题1.(2020·上海浦东新区·七年级期末)下列各数:2π,0227,0.3030030003,1中,无理数个数为( )A .2个B .3个C .4个D .5个 【答案】A【解析】根据无理数的定义:“无限不循环的小数是无理数”逐一判断即可得.解:在所列实数中,无理数有,12π2个,故选:A .【点睛】本题考查的是无理数的定义,掌握无理数的定义是解题的关键.2.(2019·上海普陀区·七年级期末)下列计算错误的是( )A 2=-B 2=C .2(2= D【答案】A【解析】根据算术平方根依次化简各选项即可判断.A : 2=,故A 错误,符合题意;B 2=正确,故B 不符合题意;C :2(2=正确,故C 不符合题意;D 正确,故D 不符合题意.故选:A.【点睛】此题考查算术平方根,依据 (0)(0)a a a a a ≥⎧==⎨-<⎩,2a =(进行判断.3.(2017·上海长宁区·七年级期末)下列说法正确的是( )A .无限循环小数是无理数B .任何一个数的平方根有两个,它们互为相反数C .任何一个有理数都可以表示为分数的形式D .数轴上每一个点都可以表示唯一的一个有理数【答案】C【解析】根据实数的概念、无理数的概念、平方根的概念以及实数与数轴的关系一一判断即可.无限循环小数是有理数,故选项A 错误;任何一个正数的平方根有两个,它们互为相反数,0的平方根是0,负数没有平方根,故选项B 错误; 任何一个有理数都可以表示为分数的形式,故选项C 正确;数轴上每一个点与实数一一对应,故选项D 错误;故选:C .【点睛】此题考查实数的概念、无理数的概念、平方根的概念以及实数与数轴的关系,解题关键在于掌握各性质定义. 4.(2019·上海浦东新区·七年级期末)下列说法中,不正确的是( )A 2±B .8的立方根是2C .64的立方根是4±D 【答案】C【解析】根据平方根和立方根的定义进行计算,再逐一判断即可解:A.4=的平方根是2±,原选项不合题意B. 8的立方根是2,原选项不合题意C. 64的立方根是4,原选项符合题意3=的平方根是故选:C【点睛】本题考查了平方根和立方根的概念,熟练掌握相关知识是解题的关键5.(2019·上海浦东新区·七年级期末)下列计算正确的是( )A .4=B .(24=C 5=±D 134= 【答案】B【解析】根据平方根和算术平方根的定义进行计算,再逐一判断即可解:A. 4=-,原选项不合题意B. (24=,原选项符合题意C. 5=,原选项不合题意4==,原选项不合题意 故选:B【点睛】本题考查了平方根和算术平方根的概念,熟练掌握相关知识是解题的关键6.(2019·上海静安区·七年级期末)已知面积为10的正方形的边长为x ,那么x 的取值范围是( ) A .13x <<B .23x <<C .34x <<D .45x <<【答案】C【解析】根据正方形的面积公式,求得正方形的边长,再进一步根据数的平方进行估算.解:由面积为10的正方形的边长为x ,得210x =,∴x=∴9<10<16,∴34<<,故选:C.【点睛】此题考查了求一个数的算术平方根和无理数的估算方法,解题的关键是熟悉1至20的整数的平方.7.(2017·上海虹口区·七年级期末)若一个数的一个平方根为9,那么它的另一个平方根是()A.3;B.3-;C.9;D.9-.【答案】D【解析】【解析】根据一个正数有两个平方根,它们互为相反数求出即可.∴一个数的一个平方根为9,∴它的另一个平方根是-9,故选:D.【点睛】考查了平方根的应用,注意:一个正数有两个平方根,它们互为相反数,0的平方根是0,负数没有平方根.8.(2019·上海长宁区·七年级期末)下列说法正确的是()A.负数没有立方根B.不带根号的数一定是有理数C.无理数都是无限小数D.数轴上的每一个点都有一个有理数于它对应【答案】C【解析】【解析】根据有理数的定义、立方根的定义、无理数的定义及实数与数轴的关系判断即可.解:A、负数有立方根,故本选项错误;B、不带根号的数不一定是有理数,如π,故本选项错误;C、无理数都是无限不循环小数,故本选项正确;D、实数和数轴上的点一一对应,故本选项错误故选:C.【点睛】此题考查实数,关键是要掌握有理数的定义、立方根的定义、无理数的定义及实数与数轴的关系.9.(2019·上海浦东新区·七年级期末)下列说法正确的是( )A .2a -一定没有平方根B .4是16的一个平方根C .16的平方根是4D .9-的平方根是3± 【答案】B【解析】【解析】根据平方根的定义逐一进行判断即可.A. 当a=0时,2a -=0,此时2a -的平方根是0,故A 选项错误;B. 4是16的一个平方根,正确;C. 16的平方根是±4,故C 选项错误;D. 9-没有平方根,故D 选项错误,故选B.【点睛】本题考查了平方根的知识,熟练掌握平方根的概念以及相关性质是解题的关键.10.(2019·上海静安区·七年级期末)下列语句正确是( )A .无限小数是无理数B .无理数是无限小数C .实数分为正实数和负实数D .两个无理数的和还是无理数【答案】B【解析】解:A .无限不循环小数是无理数,故A 错误;B .无理数是无限小数,正确;C .实数分为正实数、负实数和0,故C 错误;D .互为相反数的两个无理数的和是0,不是无理数,故D 错误.故选B .11.(2019·上海市松江区九亭中学七年级期中)下列说法中错误的个数有( )(1用幂的形式表示的结果是4-35;(2)π3是无理数;(3)实数与数轴上的点一一对应;(4)两个无理数的和、差、积、商一定是无理数.A .1个;B .2个;C .3个;D .4个. 【答案】B【解析】根据分数指数幂的定义即可判断(1);根据π是无理数,即可判断(2);根据实数与数轴上点的对应关系,即可判断(3);根据实数的四则运算法则,即可判断(4).(1用幂的形式表示的结果是345-,故(1)错; (2)因为π是无理数,所以3π是无理数,故(2)对; (3)实数与数轴上的点一一对应,故(3)对;(4)两个无理数的积、不一定是无理数,例如2=-,故(4)错;故选:B .【点睛】本题主要考查分数指数幂的概念,实数的概念以及实数的运算法则,熟练掌握上述知识,是解题的关键. 12.(2019·上海市市西初级中学七年级期中)如图,数轴上有O 、A 、B 、C 、D 五个点,根据各点所表示的)A .OAB .ABC .BCD .CD【答案】C【解析】 根据无理数的估算、数轴的定义即可得.479<<<<23<<BC 上故选:C .【点睛】本题考查了无理数的估算、数轴的定义,掌握无理数的估算方法是解题关键.13.(2020·上海市民办立达中学七年级月考)如图,线段AB 将边长为1个单位长度的正方形分割为两个等腰直角三角形,以A 为圆心,AB 的长度为半径画弧交数轴于点C ,那么点C 在数轴上表示的实数是( )A .1+BC 1D .1【答案】A【解析】先根据勾股定理求出直角三角形的斜边,即可得出选项.解:C 111==, 故答案选:A .【点评】本题考查了数轴和实数,勾股定理的应用,能读懂图象是解此题的关键.14.(2019·上海闵行区·七年级期中)下列计算中正确的是( )A 2=-B 5=±C 3π=-D .13182-= 【答案】D【解析】根据算术平方根、立方根、分数指数幂进行判断即可.A ,错误;B ,错误;C -3=-3ππ,错误;D :113-3118=82⎛⎫ ⎪⎝⎭,正确. 所以答案选D .【点睛】掌握算术平方根、立方根、分数指数幂的计算,注意符号的处理.15.(2019·上海市市八初级中学七年级期中)下列运算中,正确的是( )A .;B .;C .;D .;【答案】D【解析】【解析】根据二次根式的加减运算法则、二次根式的性质、幂的运算性质和立方根的性质对各项进行分析判断即可得出答案.解:A 项,,故本选项错误;B 项,,由于不知x 的正负,故本选项错误;C 项,,故本选项错误;D 项,,正确;故答案为D.【点睛】 本题考查了幂的运算性质、二次根式的性质和运算、立方根的性质,熟知幂的运算性质、二次根式的性质和运算法则是解题的关键.16.(2019·上海控江中学附属民办学校七年级单元测试)三个数在数轴上的点如图所示,则A .B .C .D .【答案】A【解析】【解析】根据数轴可知a<c<0<b,|a|>|b|>|c|,原式可化简为﹣(a﹣b)﹣(c﹣a)﹣(c+b),去括号后合并同类项即可.∴根据数轴可知:a<c<0<b,|a|>|b|>|c|,∴原式=|a﹣b|﹣|a﹣c|﹣|c+b|=﹣(a﹣b)﹣(c﹣a)﹣(c+b)=﹣a+b﹣c+a﹣c﹣b=﹣2c.故选A.【点睛】本题考查了二次根式的性质和化简.数轴,绝对值,整式的化简的应用,关键是能把原式得出﹣(a﹣b)﹣(c ﹣a)﹣(c+b).17.(2019·上海控江中学附属民办学校七年级单元测试)下列说法中,错误的是A.一个正数的两个平方根的和为零B.任意一个实数都有奇次方根C.平方根和立方根相等的数只有零D.的4次方根是【答案】D【解析】【解析】根据平方根、立方根、开方的定义和性质对每一项分别进行分析即可.A.一个正数的两个平方根的和为零,故本选项正确;B.任意一个实数都有奇次方根,故本选项正确;C.平方根和立方根相等的数只有零,故本选项正确;D.m(m>0)的4次方根是±,故本选项错误.故选D.【点睛】本题考查了实数,用到的知识点是平方根、立方根、开方,熟练掌握课本中的有关定义和性质是本题的关键.18.(2019·上海市中国中学七年级期中)下列说法正确的( )A.任何实数a B.任何实数aC.任何实数a的绝对值是a D.任何实数a的倒数是1 a【答案】B【解析】【解析】根据偶次方根、奇次方根、绝对值和倒数的定义判断即可.解:A.在实数范围内,负数没有偶次方根,故该选项错误;B. 任何实数aC. 负数的绝对值是它的相反数,故该选项错误;D.0没有倒数,故该选项错误;故选B【点睛】本题考查偶次方根、奇次方根、绝对值和倒数的性质,熟练掌握基础知识是解题关键.19.(2019·上海)实数和的大小关系是()A.B.C.D.【答案】C【解析】【解析】先把2.6化为,2化为的形式,再比较出被开方数的大小即可.∴2.6,,<7,∴,即2.62.故选C.【点睛】本题考查了实数的大小比较,熟知实数大小比较的方法是解答此题的关键.20.(2019·上海七年级课时练习)﹣64的立方根与)A.﹣7B.﹣1或﹣7C.﹣13或5D.5【答案】B【解析】先根据立方根的定义求出﹣64.∴﹣64的立方根4-,的平方根是3±,∴﹣64 -4+3=-1或-4-3=-7. 故选B. 【点睛】本题考查了立方根和平方根的定义,以及分类讨论的数学思想,熟练掌握立方根和平方根的定义是解答本题的关键.21.(2018·上海金山区·七年级期中)下列运算中正确的是( )A 4=±B 2=C 3=-D .1210010-=-【答案】B 【解析】A 、B 、C 按照算术平方根,D 按照指数幂的运算法则运算即可.A.4=,故此项错误;B.2=C.3=,故此项错误;D. ()1122211001010--==,故此项错误. 故答案选B . 【点睛】本题考查了算术平方根,指数幂的运算法则,熟悉法则是解答此题的关键.22.(2019·汉中市南郑区红庙镇初级中学七年级期中)对于实数a ,我们规定,用符号最大整数,称为a 的根整数,例如:3=,3=.我们可以对一个数连续求根整数,如对5连续两次求根整数:5221.若对x 连续求两次根整数后的结果为1,则满足条件的整数x 的最大值为( ) A .5 B .10 C .15 D .16【答案】C 【解析】对各选项中的数分别连续求根整数即可判断得出答案.解:当x=5时,5221,满足条件;当x=10时,10331,满足条件; 当x=15时,15331,满足条件; 当x=16时,16442,不满足条件;∴满足条件的整数x 的最大值为15, 故答案为:C . 【点睛】本题考查了无理数估算的应用,主要考查学生的阅读能力和理解能力,解题的关键是读懂题意. 二、填空题23.(2018·上海七年级零模)-1000的立方根是________. 【答案】-10 【解析】10=-,故答案为:10-. 【点睛】本题主要考查对立方根的理解,熟练掌握立方根的意义是解答本题的关键.正数有一个正的立方根,负数有一个负的立方根,0的立方根是0.24.(2020·_____.【答案】235-【解析】=m na=2315=235-故答案为:235-.【点睛】此题考查的是分数指数幂和负指数幂,掌握分数指数幂的性质和负指数幂的性质是解题关键. 25.(2020·上海静安区·)计算:1216=_________. 【答案】-1 【解析】根据绝对值的性质和算术平方根的性质以及分数指数幂计算,再作加减法.解:1216=4=-5+4=-1, 故答案为:-1. 【点睛】本题考查了绝对值的性质和算术平方根的性质以及分数指数幂,解题的关键是掌握相应的计算方法. 26.(2019·___________. 【答案】2 【解析】88=,8的立方根是2,故答案为:2. 【点睛】本题考查算术平方根和立方根的定义,明确算术平方根和立方根的定义是解题的关键.27.(2020·上海静安区·)比较大小:-_________3-(填“<”或“=”或“>”).【答案】>【解析】-=3,根据负数比较大小的法则进行解答即可.解:∴-=<3∴->-3,故答案为:>.【点睛】本题考查的是实数的大小比较,熟知负数比较大小的法则是解答此题的关键.28.(2019·上海市松江区九亭中学七年级期中)比较大小:4-(填“>”、“=”或“<”)【答案】>.【解析】-,根据两个负数的大小比较方法进行比较即可得解.|-5|=5|4|=4<4∴>-4故答案为:>【点睛】本题考查实数的大小比较,比较两个负数,绝对值大的反而小.29.(2020·上海松江区·为_____.【答案】【解析】∴一个实数在数轴上对应的点在负半轴上,且到原点∴这个数为:故答案为: 【点睛】此题主要考查了实数与数轴,正确掌握数轴特点是解题关键.30.(2019·的整数部分是________________ . 【答案】4 【解析】∴4<5,的整数部分为4, 故答案为:4. 【点睛】本题考查估算无理数的大小的知识;用“夹逼法”得到无理数的范围是解决本题的关键.31.(2018·上海杨浦区·的小数部分是a ,计算2a =___________.【答案】3-【解析】先求出a 的小数部分,然后再计算平方.∴a 的小数部分,1<2∴a -1∴221)3a ==-故答案为:3-【点睛】本题考查二次根式的估算,解题关键是先估算出二次根式的大小,然后表示出a的值.32.(2019·上海静安区·七年级期中)在数轴上表示2的点之间的距离是______.【答案】2【解析】在数轴上表示和2,2在右边,即可确定两个点之间的距离.在数轴上表示和2,在左边,2在右边,在数轴上表示的点与表示数2的点之间的距离是:2-(=2故答案为:2【点睛】本题考查了数轴,解题的关键是知道确定两个点之间的距离,就是用右边的数减去左边的数.33.(2019·上海市市西初级中学七年级期中)2的整数部分是a,小数部分是b,则ba=______.【解析】先根据无理数的定义和估算得出a、b的值,由此即可得.134<<<<12<<324∴<<因此,2+的整数部分是3,小数部分是231=即3a =,1b =则b a =故答案为:13.【点睛】本题考查了无理数的定义和估算,掌握无理数的相关知识是解题关键. 34.(2019·上海杨浦区·七年级期末)1的四次方根是___________. 【答案】±1 【解析】 【解析】根据(±1)4=1,即可得到答案.∴(±1)4=1, ∴1的四次方根是:±1. 故答案是:±1. 【点睛】本题主要考查四次方根的意义,掌握四次方运算与开四次方运算是互逆运算,是解题的关键.35.(2016·上海奉贤区·七年级期中)如果1a a -<<,那么整数a =______.【答案】4 【解析】本题考查的是无理数的估算,的大小,在确定整数a 的大小即可<<,∴34<<,∴1a a -<<,∴整数a=4【点睛】本题的关键是用有理数逼近无理数,求无理数的近似值36.(2019·x 的取值范围是______x 的取值范围是______.【答案】任意实数x=1【解析】【解析】根据立方根和算术平方根的定义求解即可.∴开立方时被开方数可以为任意实数,x的取值范围是任意实数;∴1-x≥0,x-1≥0,∴x=1.故答案为:任意实数;x=1【点睛】本题考查了立方根和平方根的定义,正数有一个正的立方根,负数有一个负的立方根,0的立方根是0. 正数有一个正的算术平方根,0的平方根是0,负数没有算术平方根.37.(2018·上海七年级零模)已知数轴上点A到原点的距离为1,且点A在原点的右侧,数轴上到点A的距离为________.1或1【解析】根据数轴上点A到原点的距离为1,且点A在原点的右侧,可以得到点A表示的数,从而可以得到数轴上到点A∴数轴上点A到原点的距离为1,且点A在原点的右侧,∴点A表示的数是1,∴数轴上到点A1或11或1【点睛】本题考查实数与数轴、两点间的距离,解答本题的关键是明确题意,利用数轴的知识解答.38.(2019·上海虹口区·七年级月考)一个棱长为1dm的正方体,要使它保持正方体形状但体积增加1倍,则这个新正方体的棱长是______dm.【解析】 【解析】首先根据题意求出正方体的体积,再求立方根即可得出结果.∴2×13=2(dm 3),∴dm 3..【点睛】本题考查了正方体的体积、立方根;熟练掌握立方根的概念,根据题意求出正方体的体积是解决问题的关键.39.(2020·上海市民办立达中学七年级月考)0.1738 5.25≈,38.076525≈,33.77452.5≈,=_______________; 【答案】0.8076- 【解析】将根号下的小数转化为分数,再计算立方根,结合题目给的关系式即可得出答案.解:8.0760.807610===-=-故答案为:0.8076-. 【点睛】本题考查了立方根的性质,比较简单.40.(2019·上海青浦区·青教院附中)在数学中,为了书写简便,我们记k=1k n∑=1+2+3+…+(n -1)+n ,nk=1(x+k)∑=(x+1)+(x+2)+(x+3)+…+(x+n),则化简3k=1[(x-k)(x-k-1)]∑的结果是______________________.【答案】3x 2-15x+20 【解析】根据题中的新定义计算规则即可得出式子,然后化简即可.解:3k=1[(x-k)(x-k-1)]∑(1)(2)(2)(3)(3)(4)x x x x x x =--+--+--2223256712x x x x x x =-++-++-+ 231520x x =-+【点睛】本题主要考查整式的乘法、新定义计算,找出规律列出代数式是关键.三、解答题41.(2020·上海静安区·)计算:11228(0.5)427-⎛⎫+-÷ ⎪⎝⎭【答案】432+【解析】根据分数指数幂和算术平方根以及零次幂分别计算,再作加减法.解:11228(0.5)427-⎛⎫+-÷ ⎪⎝⎭212-÷122-=432+. 【点睛】本题考查了分数指数幂和算术平方根以及零次幂,解题的关键是掌握运算法则.42.(2020·上海浦东新区·七年级期末)利用幂的运算性质计算:17322439⎛⎫⨯ ⎪⎝⎭【答案】523【解析】根据分数指数幂的运算法则,幂的乘方、积的乘方、同底数幂的乘法的运算法则计算即可.解:原式7131737352+224244442=33=33=3=3⨯⨯⨯⨯⨯【点睛】此题考查了分数指数幂,幂的乘方、积的乘方、同底数幂的乘法,熟练掌握分数指数幂的运算法则,幂的乘方、积的乘方、同底数幂的乘法的运算法则是解本题的关键.43.(2018·2194327)÷【答案】5123【解析】根据幂的运算性质直接进行求解即可.解:原式1115324123333=⨯÷=.【点睛】本题主要考查幂的运算性质,熟练掌握幂的运算性质是解题的关键.44.(2020·2132381(14)()816--⨯【答案】15【解析】由立方根、分数指数幂的运算法则进行计算,即可得到答案解:原式1112212332332322279439()()()()()84524--⎧⎫⎪⎪⎡⎤⎡⎤⎡⎤=-⨯=-+-⨯⎨⎬⎢⎥⎢⎥⎢⎥⎣⎦⎣⎦⎣⎦⎪⎪⎩⎭136243443449441()()152952954955⎡⎤=-+⨯=-+⨯=-+⨯=-+=⎢⎥⎣⎦;【点睛】本题考查了实数的运算法则,分数指数幂的运算法则,解题的关键是熟练掌握运算法则,正确的进行解题45.(2018·上海虹口区·【解析】把式子化成分数指数幂的形式,根据积的乘方的逆用,同底数幂的乘法则计算.原式=111111113363336262323233÷⨯=⨯÷⨯==【点睛】此题考查分数指数幂,积的乘方,同底数幂的乘法运算,熟练掌握运算法则是解题的关键.46.(2018·上海松江区· 【答案】1 【解析】直接利用分数指数幂的性质分别化简得出答案.解:原式1141133630622816222221=÷÷==÷=÷【点睛】本题考查了分数指数幂,熟练掌握运算法则是解题的关键.47.(2019·上海闵行区·七年级期中)利用幂的运算性质进行计算:11232311222-⎛⎫⎛⎫-⨯-÷ ⎪⎪⎝⎭⎝⎭【答案】322【解析】根据分数指数幂、幂的乘方与积的乘方、同底数幂的除法的运算方法计算即可.11232311222-⎛⎫⎛⎫-⨯-÷ ⎪⎪⎝⎭⎝⎭()()1112233=-222-⨯-÷()11-23=-4-22⨯÷⎡⎤⎣⎦11-32=82÷()11-323=22÷32=2【点睛】注意分数指数幂、幂的乘方与积的乘方以及同底数幂的除法的灵活应用.48.(2018·上海杨浦区·七年级期末)用幂的运算性质计算:1112361322427-⎛⎫⎛⎫⎛⎫⨯÷ ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭.(结果表示为含幂的形式) 【答案】163【解析】先将1212⎛⎫ ⎪⎝⎭、1334-⎛⎫⎪⎝⎭、16227⎛⎫ ⎪⎝⎭转化为底数为2和3的形式,然后按照同底幂的乘法、除法法则运算可得.解:原式211113362222323---=⨯⨯⨯⨯121112363223-+--+=⨯163=【点睛】本题考查负分数指数的运算,解题关键是将底数不同的指数转化为底数相同的形式.49.(2018·上海松江区·(结果用幂的形式表示) 【答案】4 【解析】先把开方运算表示成分数指数幂的形式,再根据同底数乘法、除法法则计算即可.原式453362222=⨯÷4353262+-=22==4 【点睛】本题考查了分数指数幂.解题的关键是知道开方和分数指数幂之间的关系.50.(2019·【答案】7+3π 【解析】23933π=-+--7+3π=.【点睛】本题考查了无理数的混合运算,掌握无理数混合运算的法则是解题的关键.51.(2019·上海市中国中学七年级期中)已知a 的整数部分,b 求代数式(1b a -的平方根. 【答案】3±. 【解析】根据223104<<可得34<<的整数部分是3,小数部分是3,即可求解.解:∴223104<<,∴34<<,的整数部分是3,则3a =的小数部分是3,则3b =,∴(()1312339a b --=-=-=,∴9的平方根为3±. 【点睛】本题考查实数的估算、实数的运算、平方根的定义,掌握实数估算的方法是解题的关键. 52.(2019·上海市松江区九亭中学七年级期中)小明和小华做游戏,游戏规则如下:(1)每人每次抽取四张卡片,如果抽到白色卡片,那么加上卡片上的数或算式;如果抽到底板带点的卡片,那么减去卡片上的数或算式.(2)比较两人所抽的4张卡片的计算结果,结果大者为胜者.请你通过计算判断谁为胜者?【答案】(1)12;(2)小华获胜. 【解析】试题分析:(1)列出两人抽取的算式,计算即可; (2)比较两人结果大小,即可作出判断.试题解析:(1+12﹣+12=12;﹣722+3﹣72=12,(2)∴12,∴小华获胜. 点睛:此题考查的实数的运算,熟练掌握运算法则是解本题的关键. 53.(2019·上海控江中学附属民办学校七年级单元测试)(1)计算:)(11___________22____.==-=;;(2)0n≥的倒数是_______.(3)比较43的大小.【答案】(1)1,1,1;(2(3)43<【解析】【解析】(1)根据平方差公式,可得答案;(2)根据(1)的规律,可得答案;(3)利用(2)的结论,可得答案.(1))22111211=-=-=;22321=-=-=;(2222(2)431=-=-=;(2)∴2211n n=-=+-=,∴ =(3)∴4=3=,43+>,∴43<.【点睛】本题考查了分母有理化,利用平方差公式是分母有理化的关键.54.(2019·上海市市八初级中学七年级期中)计算:1221162233322(23)+(3+4)2727--⨯-÷【答案】445-.【解析】【解析】按照积的乘方运算法则、分数指数幂的意义和幂的除法运算法则计算各项,再合并同类项即可得到答案.解:1221162233322(23)+(3+4)2727--⨯-÷=122166333332(2)(3)(3)(3)-⨯÷=32222333-⨯÷ =418935⨯+- =172815+- =445-. 【点睛】本题考查了积的乘方、分数指数幂和幂的除法等知识点,解题的关键是熟练掌握幂的运算性质和分数指数幂的意义.55.(2019·上海控江中学附属民办学校七年级单元测试)若实数x y 、使得2x y -,求y x 的四次方根. 【答案】±2 【解析】 【解析】根据互为相反数的两数之和为0,及绝对值、算术平方根的非负性,可得出x 、y 的值,代入计算即可.∴2x y-∴2y x -=0,∴328x y y =⎧⎨=⎩,解得:42x y =⎧⎨=⎩,∴x y =16,16的四次方根为±2. 【点睛】本题考查了算术平方根及绝对值的非负性,解答本题的关键是根据相反数的定义得出方程.56.(2019·上海市松江区九亭中学七年级期中)对于实数a ,我们规定:用符号的最大整数,=,=3.称为a的根整数,例如:3(1)仿照以上方法计算:=______;=_____.=,写出满足题意的x的整数值______.(2)若1=→=1,这时如果我们对a连续求根整数,直到结果为1为止.例如:对10连续求根整数2次3候结果为1.(3)对100连续求根整数,____次之后结果为1.(4)只需进行3次连续求根整数运算后结果为1的所有正整数中,最大的是____.【答案】(1)2;5;(2)1,2,3;(3)3;(4)255【解析】(1(2)根据定义可知x<4,可得满足题意的x的整数值;(3)根据定义对120进行连续求根整数,可得3次之后结果为1;(4)最大的正整数是255,根据操作过程分别求出255和256进行几次操作,即可得出答案.解:(1)∴22=4,62=36,52=25,∴5<6,]=[2]=2,,故答案为2,5;(2)∴12=1,22=4,且]=1,∴x=1,2,3,故答案为1,2,3;(3)第一次:,第二次:]=3,第三次:,故答案为3;(4)最大的正整数是255,理由是:,,,∴对255只需进行3次操作后变为1,,,]=2,]=1,∴对256只需进行4次操作后变为1,∴只需进行3次操作后变为1的所有正整数中,最大的是255,故答案为255.【点睛】本题考查了估算无理数的大小的应用,主要考查学生的阅读能力和猜想能力,同时也考查了一个数的平方数的计算能力.。

2019-2020年人教版七年级下学期期末英语综合测试卷1(word版含答案)

2019-2020年人教版七年级下学期期末英语综合测试卷1(word版含答案)

2019-2020学年度下学期七年级期末测试1第I卷一、听力测试(本题共10分,每小题1分)(略)二、单项选择(本题共20分,每小题1分)选择最佳答案。

()11.— Can I help you?—_______. Please help me open the window.A.Yes, please.B. SorryC. No, thanks()12. — _____ do they get dressed?—Usually ____ 5:15 a.m. ____ the morning.A.When, on, inB. What time, at, inC. What time, in, on ()13. —Are there any vegetables in the beef soup?— Yes, _________.A.three areB. they areC. there are()14. —____ is it from your home to your school?— It’s quite near, only five minute’s walk.A.How manyB. How farC. How long()15. —I don’t like to stay here. It’s too ____.—Well, let’s go somewhere quiet.A.dirtyB. expensiveC. noisy()16. —Jim, I will take an important exam(考试) tomorrow.—______A.Good luck!B. Sounds good!C. Good idea!()17. Tom, you should _____ the rules in your school.A.breakB. stayC. follow()18. If it ___ sunny, we’ll go to the park.A.wasB. will beC. is()19. I like rain___ it makes me cool.A.orB. soC. because()20. —What is he ___?—He’s friendly.A, look like B. like C. look()21. People ____ too many trees to make desks, chairs, chopsticks and so on.A.cut upB. cut downC. cut off()22. It took Tony three hours _____ his homework.A.doB. doingC. to do()23. Look! The cook _____ the food from the desk to the ground.A.am carryingB. is carryingC. carries()24. Don’t _____ with fire in the room.A.playB. to playC. playing()25. We must save the trees and not buy things _____ ivory.A.made fromB. made ofC. made in()26. When you get the first place in a contest, some people in western countries will say “You did a good job.” then you should say “_____________”A. No, I don’t think so. In fact, I can do much better.B.Thank you very much.C.Where, where, don’t say that.()27. Different people are afraid of different animals. There are 35 students in Class Two. According to the table,________ students are afraid ofsnake.A. 5B. 10C. 15()28. Which pair of the words with the underlined letters has the same sound?A.hundred trueB. leave dreamC. ride ridden()29.In the following words, which underlined letters have a different sound from the others?A.thanksB. bothC. other()30. Which word of the following doesn’t have the same stress as the others?A.DragonB. MovieC. America三、完型填空(A)课内阅读根据短文内容选择最佳答案What would people like to eat 31 their birthday? The answer would be differentin different countries. In many countries, people have birthday cakes with candles. The number of candles 32 the person’s age. The birthday person must make a wish and blow out the candles. If he or she blows out all the candles in one 33, the wish will come true .In the UK, people sometimes put a candy in a birthday cake. The child with the candy is 34. In china, it is 35popular to have cake on your birthday .( ) 31. A. in B. on C. /( ) 32. A. is B. are C. am( ) 33. A. time B. go C. day( ) 34. A. luck B. luckily C. lucky( ) 35. A. getting B. get C. gets(B)课外阅读根据短文内容选择最佳答案Mr White works in a middle school. He 36 English. He is friendly to his 37 and they also like him. He spends 38 time on his work. He often does some reading and writing. When he’s 39, he is also very busy. So he can’t help his wife do any 40 .The woman is always angry with him.It’s Saturday. Their daughter Kate is 41 her homework in her bedroom. Mrs. White finds her 42 is out. She hopes her daughter will say she’s 43 than her husband. She gives an apple to Kate and asks, “ 44 is cleverer, your father or I?”Can you guess what the girl’s 45 is?“I’m the cleverest in our family!”Kate says without thinking.( ) 36. A. studies B. watches C. teaches( ) 37. A. friends B. students C. workers( ) 38. A. many B. little C. much( ) 39. A. at home B. at work C. in bed( ) 40. A. washing B. cooking C. housework( ) 41. A. making B. doing C. finding( ) 42. A. mother B. brother C. husband( ) 43. A. good B. better C. bad( ) 44. A. Who B. Whose C. Why( ) 45. A. play B. sing C . answer四、阅读理解(A)根据短文内容选择最佳答案When Tom was seventeen years old he was as tall as his father, so he began to borrow Mr. Horward’s clothes when he wanted to go out with his friends in the evening.Mr. Howard did not like this, and he always got in a bad mood when he found his son wearing any of his things.One evening when Tom came downstairs(楼下) to go out, his father stopped him in the hall. He looked at Tom’s clothes very carefully.Then he said angrily, “Isn’t that one of my ties(领带),Tom?”“Yes, Father, it is.” answered Tom.“And that shirt’s mine too.”“Yes, that’s yours too.” answered Tom.“And you’re wearing my belt(皮带)!” said Mr. Howard.Tom said, “Yes. Please let me wear your belt.______________________________________.”Father said angrily, “Oh, you wear my trousers, too.”( ) 46. The underlined words “in a bad mood” most probably means ___________.A. angryB. happyC. wonderful ( ) 47. Mr. Howard got angry when his son _______________________.A. went out with friendsB. wore any of his thingsC. ate outside ( ) 48. One evening ___________ came downstairs and wanted to go out.A. Mr. HowardB. Mrs. HowardC. Tom ( ) 49. One evening, Tom wore his father’s __________ to go out with his friends.A. shoesB. hatC. ties ( ) 50. “_____________” can be the missing sentence in the passage.A. Because you are a good father.B. Because I finished my homework first.C. Because you don’t want “your” trousers to fall down.(B)Mr. Smith and Mrs. Smith have a son. His name is Jack. Jack is only three years old. He is very lovely, and he always asks his parents questions.One day, Mr. Smith is reading a book on the sofa in his room. And he has a banana in his hand. He likes to eat a banana while reading. Jack comes in. He looks at the banana in Mr. Smith’s hand and asks, “Dad, what’s this?” But Mr. Smith doesn’t hear him, so he doesn’t answer him. Then Jack goes up to Mr. Smith, shakes(摇动) his leg and asks, “What’s this, Dad?” “It’s a leg,” answers Mr. Smith. Then Jack goes out of the room and says to Mrs. Smith, “Mom, I want to eat a leg.” After that, hisparents laugh happily.根据短文内容判断正误,正确写A,错误写B( ) 51. Jack is two years old.( ) 52. Jack always watches TV.( ) 53. Mr. Smith is sitting on the sofa and reading a book.( ) 54. In fact(事实上), Jack wants to eat a banana.( ) 55. From the passage, we know Jack makes his parents sad.(C)The Notting Hill Carnival(诺丁山狂欢节) is on the last weekend in August every year. It is the largest street party in Europe. The streets are full of music, songs and laughter(欢笑).The festival started in 1966 in London. Most black people around Notting Hill didn’t come from Africa, but from the Caribbean, America. They were living in very old houses. And they were also facing racism(种族歧视). They missed their hometown very much. They dreamed of(渴望)a festival to bring them closer together. People can hear Caribbean steel drums(加勒比钢鼓), eat street food and watch thousands of dancers in beautiful clothes. So many people can come together for one weekend of eating, laughter and music. They almost forget about life’s trouble for 48 hours.( ) 56. The Notting Hill Carnival is on ____________.A. the last Sunday in MayB. the last Saturday in JuneC. the last weekend in August( ) 57. The festival started in __________.A.1946B. 1960C. 1966( ) 58. Most black people around Notting Hill came from _______.A.AfricaB. EnglandC. America( ) 59. The Notting Hill Carnival was created when people there ___________.A.lived a hard lifeB. lived a happy lifeC. were planning to move to another place( ) 60. What’s the best title for the passage?A.Caribbean steel drumsB. Black people around Notting HillC.The Notting Hill Carnival第II卷五、交际应用(本题共10分,每空1分)(A)从A~G选项中选出能填入空白处的最佳选项补全对话。

2019-2020年人教版七年级英语下学期期末教学质量检测试题(附答案)

2019-2020年人教版七年级英语下学期期末教学质量检测试题(附答案)

2019-2020年人教版七年级英语下学期期末教学质量检测试题第一部分语言知识运用(共计70分)I. 词汇(本题共10分,每小题1分)(A) 根据句意,用所给单词的适当形式填空。

1. The (fun) story made all of us laugh.2. He has a good voice, and he wants to be a (music).3. It’s too (noise) here. Let’s go somewhere quiet.4. Turn left at the third (cross), then walk on. You can find the hospital.5. Zhang Ziyi and Zhao Wei are both my favorite (act).(B) 根据句意及汉语提示写出单词。

6. We are going to visit the (博物馆) this Sunday. Would youlike to come7. Jim says he is very (感兴趣) in Chinese, for he thinksChinese is very useful.8. There are more than seventy (绵羊) at the foot of the hill.9. As a student, you must (遵守) the school rules.10. Jeff is of medium ( 身高) with a pair of glasses. He looks very cool.II. 单项选择。

(本题共25分,每小题1分)( )11. There is ______ uniform on the desk. Is it Jim’sA. aB. anC. the( )12. It’s winter, ______ it isn’t cold at all. I don’t think it’s good.A. andB. butC. or( )13. ______ late for the meeting, Rick.A. Be notB. Don’t beC. Don’t( )14. —Listen! Who _____ in our classroom—It must be Steve. He ______ very beautifully.A. is singing; singsB. is singing; is singingC. sings; is singing( )15. —I want to take some photos ______ you. —Thank you.A. showingB. showC. to show( )16. I’m having a great time ______ with some American friends.A. to playB. playingC. play( )17. ______ good weather! Let’s go to the park to fly a kite, OKA. HowB. WhatC. What a( )18. The Browns live ______ Zhongshan Road. Their home is not far ______ school.A. at; fromB. on; toC. on; from( )19. —Can you ______ the story in English—Sorry, I can’t ______ English.A. speak; speakB. tell; speakC. tell; say( )20. There is a river ______ the two cities. The water in it is very clean.A. onB. overC. between( )21. —Where is Jim—He’s watching some boys ______ basketball on the playground.A. playB. to playC. playing( )22. ______ you enjoy ______ computer gamesA. Are; playingB. Do; playingC. Do; to play( )23. —Who teaches ______ English this term, Mr. Wang or Ms Hu—Mr. Wang, I think.A. youB. yourC. yours( )24. There is ______ water in my glass. Would you please give me someA. littleB. a littleC. much( )25. —How was your day off—Pretty good ! I _________ the Great Wall with my classmates.A. visitB. visitedC. am visiting( )26. —Please come to the party before five o’clock.—Sorry, I ______. I’ll have to help mom cook first.A. mustn’tB. needn’tC. can’t( )27. —How many doctors are there in your hospital—Over two ______.A. hundredsB. hundredC. hundreds of( )28. —_____ is it from your home to school—It’s about ten minutes’ walk.A. How farB. How longC. How often( ) is said that it ______ over four hours to get to Dalian from Harbin by high-speed train. Is that trueA. takesB. spendsC. pays( )30. Many wild animals are ______ great danger today.A. onB. underC. in( )31. —She sings very ______. She wants to join you. —Sounds ______.A. well; goodB. well; wellC. good; well( )32. —Would you please help me ______ the meat —Sure.A. get upB. cut upC. put up( )33. Ann ______ eats breakfast. It isn’t good for her health.A. alwaysB. usuallyC. never( )34. The chicken ______ delicious. I’d like some more, Mum.A. tastesB. eatsC. sounds( )35. Could you tell me when you can _______ that small villageA. arrive inB. arrive atC. get inIII. 句型转换 (本题共10分,每空1分)按要求完成下列各题,每空一词。

2019-2020学年上海市闵行区七年级下学期期末数学试卷 (解析版)

2019-2020学年上海市闵行区七年级下学期期末数学试卷 (解析版)

2019-2020学年上海市闵行区七年级第二学期期末数学试卷一、选择题(共6小题).1.下列各数中是无理数的()A.B.2C.0.25D.0.2022.下列等式正确的是()A.B.C.D.3.在直角坐标平面内,已知点B和点A(3,4)关于x轴对称,那么点B的坐标()A.(3,4)B.(﹣3,﹣4)C.(3,﹣4)D.(﹣3,4)4.点到直线的距离是指()A.从直线外一点到这条直线的垂线B.从直线外一点到这条直线的垂线段C.从直线外一点到这条直线的垂线的长D.从直线外一点到这条直线的垂线段的长5.如图中∠1、∠2不是同位角的是()A.B.C.D.6.如图,已知∠DOB=∠COA,补充下列条件后仍不能判定△ABO≌△CDO的是()A.∠D=∠B,OB=OD B.∠C=∠A,OA=OCC.OA=OC,OB=OD D.AB=CD,OB=OD二、填空题(共12小题).7.64的平方根是.8.比较大小:.(填“>、<、或=”)9.计算:=.10.利用计算器计算(保留三个有效数字).11.数轴上,点B在点A的右边,已知点A表示的数是﹣2,且AB=5.那么点B表示的数是.12.在直角坐标平面内,点P(﹣5,0)向平移m(m>0)个单位后落在第三象限.(填“上”或“下”或“左”或“右“)13.已知点A(m,n)在第四象限,那么点B(m,﹣n)在第象限.14.在△ABC中,如果∠A=∠B+∠C,那么△ABC是三角形.(填“锐角”、“钝角”或“直角”)15.等腰三角形的两条边长分别为4和9,那么它的周长为.16.如图,已知直线a∥b∥c,△ABC的顶点B、C分别在直线b、c上,如果∠ABC=60°,边BC与直线b的夹角∠1=25°,那么边AB与直线a的夹角∠2=度.17.如图,已知△ABC中,AB=AC,AD是∠BAC的平分线,如果△ABD的周长为12,△ABC的周长为16,那么AD的长是.18.如图所示,将长方形纸片ABCD进行折叠,如果∠BHG=70°,那么∠BHE=度.三、解答题(本大题共8题,满分64分)19.计算:(×﹣2)÷20.计算.21.利用幂的性质计算:.22.如图,已知在△ABC中,∠B=80°,点D在BC的延长线上,∠ACD=3∠A,求:∠A的度数.23.如图,已知GH、MN分别平分∠AGE、∠DMF,且∠AGH=∠DMN,试说明AB∥CD的理由.解:因为GH平分∠AGE(已知),所以∠AGE=2∠AGH()同理∠=2∠DMN因为∠AGH=∠DMN(已知)所以∠AGE=∠()又因为∠AGE=∠FGB()所以∠=∠FGB()所以AB∥CD().24.如图,已知C是线段AB的中点,CD∥BE,且CD=BE,试说明∠D=∠E的理由.25.如图,在直角坐标平面内,已知点A(1,2).(1)把点A向右平移3个单位再向下平移2个单位,得到点B,那么点B的坐标是;(2)点C(0,﹣2),那么△ABC的面积等于;(3)在图中画出出△ABC关于原点O对称的△A1B1C1.26.如图,已知点B、C、E在一直线上,△ABC、△DCE都是等边三角形,联结AE、BD.试说明AE=BD的理由.27.如图,在△ABC中,AB⊥BC,BE⊥AC于E,AF平分∠BAC交BE于点F,DF∥BC.(1)试说明:BF=DF;(2)延长AF交BC于点G,试说明:BG=DF.参考答案一、选择题:(本大题共6题,每题2分,满分12分)1.下列各数中是无理数的()A.B.2C.0.25D.0.202【分析】根据无理数的定义求解即可.解:2,0.25,0.202是有理数,是无理数,故选:A.2.下列等式正确的是()A.B.C.D.【分析】根据二次根式的性质求出每个式子的值,再得出选项即可.解:A、没有意义,故本选项不符合题意;B、=3,故本选项符合题意;C、﹣=﹣5,故本选项不符合题意;D、﹣=﹣2,故本选项不符合题意;故选:B.3.在直角坐标平面内,已知点B和点A(3,4)关于x轴对称,那么点B的坐标()A.(3,4)B.(﹣3,﹣4)C.(3,﹣4)D.(﹣3,4)【分析】根据关于x轴的对称点的坐标特点:横坐标不变,纵坐标互为相反数解答.解:∵点B和点A(3,4)关于x轴对称,∴点B的坐标为(3,﹣4),故选:C.4.点到直线的距离是指()A.从直线外一点到这条直线的垂线B.从直线外一点到这条直线的垂线段C.从直线外一点到这条直线的垂线的长D.从直线外一点到这条直线的垂线段的长【分析】根据点到直线的距离的定义解答本题.解:A、垂线是直线,没有长度,不能表示距离,故A错误;B、垂线段是一个图形,距离是指垂线段的长度,故B错误;C、垂线是直线,没有长度,不能表示距离,故C错误;D、符合点到直线的距离的定义,故D正确.故选:D.5.如图中∠1、∠2不是同位角的是()A.B.C.D.【分析】同位角的定义:在截线的同侧,并且在被截线的同一方的两个角是同位角,依此即可求解.解:A、∠1与∠2有一条边在同一条直线上,另一条边在被截线的同一方,是同位角,不符合题意B、∠1与∠2有一条边在同一条直线上,另一条边在被截线的同一方,是同位角,不符合题意;C、∠1与∠2有一条边在同一条直线上,另一条边在被截线的同一方,是同位角,不符合题意;D、∠1与∠2的一边不在同一条直线上,不是同位角,符合题意.故选:D.6.如图,已知∠DOB=∠COA,补充下列条件后仍不能判定△ABO≌△CDO的是()A.∠D=∠B,OB=OD B.∠C=∠A,OA=OCC.OA=OC,OB=OD D.AB=CD,OB=OD【分析】根据全等三角形的判定方法即可一一判断.解:∵∠DOB=∠COA,∴∠DOB﹣∠BOC=∠COA﹣∠BOC,即∠DOC=∠BOA,A、根据∠D=∠B、OB=OD和∠DOC=∠BOA能推出△ABO≌△CDO(ASA),故本选项不符合题意;B、根据∠A=∠C、OA=OC和∠DOC=∠BOA能推出△ABO≌△CDO(ASA),故本选项不符合题意;C、根据OA=OC、∠DOC=∠BOA和OB=OD能推出△ABO≌△CDO(SAS),故本选项不符合题意;D、根据CD=AB、OB=OD和∠DOC=∠BOA不能推出△ABO≌△CDO,故本选项符合题意;故选:D.二、填空题:(本大题共12题,每题2分,满分24分)7.64的平方根是±8.【分析】直接根据平方根的定义即可求解.解:∵(±8)2=64,∴64的平方根是±8.故答案为:±8.8.比较大小:<.(填“>、<、或=”)【分析】先把两个实数平方,然后根据实数的大小比较方法即可求解.解:∵()2=12,(3)2=18,而12<18,∴2<3.故答案为:<.9.计算:=10.【分析】利用算术平方根的定义计算即可.解:===10.故答案为:10.10.利用计算器计算 1.78(保留三个有效数字).【分析】用计算器计算出和的值后,再根据有效数字的定义解答即可.解:原式≈3.464﹣1.681≈1.78.故答案为:1.78.11.数轴上,点B在点A的右边,已知点A表示的数是﹣2,且AB=5.那么点B表示的数是3.【分析】根据数轴表示数的意义,在点A的右边,到点A距离为5的点所表示的数为3.解:﹣2+5=3,故答案为:3.12.在直角坐标平面内,点P(﹣5,0)向下平移m(m>0)个单位后落在第三象限.(填“上”或“下”或“左”或“右“)【分析】根据点P的位置判断即可.解:∵P(﹣5,0)在x轴的负半轴上,∴点P向下平移落在第三象限,故答案为下.13.已知点A(m,n)在第四象限,那么点B(m,﹣n)在第一象限.【分析】根据点所在象限判断出m、n的取值范围,然后再确定﹣n的取值范围,进而可得答案.解:∵点A(m,n)在第四象限,∴m>0,n<0,∴﹣n>0,∴点B(m,﹣n)在第一象限,故答案为:一.14.在△ABC中,如果∠A=∠B+∠C,那么△ABC是直角三角形.(填“锐角”、“钝角”或“直角”)【分析】根据三角形的内角和是180°计算.解:∠A+∠B+∠C=180度.又∠A=∠B+∠C,则2∠A=180°,即∠A=90°.即该三角形是直角三角形.故答案为:直角.15.等腰三角形的两条边长分别为4和9,那么它的周长为22.【分析】分4是腰长与底边两种情况讨论求解.解:①4是腰长时,三角形的三边分别为4、4、9,∵4+4<9,∴不能组成三角形,②4是底边时,三角形的三边分别为4、9、9,能组成三角形,周长=4+9+9=22.综上所述,它的周长为22.故答案为:22.16.如图,已知直线a∥b∥c,△ABC的顶点B、C分别在直线b、c上,如果∠ABC=60°,边BC与直线b的夹角∠1=25°,那么边AB与直线a的夹角∠2=35度.【分析】证明∠ABC=∠1+∠2即可解决问题.解:如图,∵a∥b∥c,∴∠2=∠3,∠1=∠4,∴∠ABC=∠2+∠1.∵ABC=60°,∠1=25°,∴∠2=60°﹣25°=35°,故答案为35.17.如图,已知△ABC中,AB=AC,AD是∠BAC的平分线,如果△ABD的周长为12,△ABC的周长为16,那么AD的长是4.【分析】根据等腰三角形的性质和三角形的周长即可得到结论.解:∵AB=AC,AD是∠BAC的平分线,∴BD=CD,∵△ABC的周长为16,∴AB+BD=16=8,∵△ABD的周长为12,∴AD=12﹣8=4,故答案为:4.18.如图所示,将长方形纸片ABCD进行折叠,如果∠BHG=70°,那么∠BHE=55度.【分析】利用平行线的性质可得∠1=70°,利用折叠及平行线的性质,三角形的内角和定理可得所求角的度数.解:由题意得EF∥GH,∴∠1=∠BHG=70°,∴∠FEH+∠BHE=110°,由折叠可得∠2=∠FEH,∵AD∥BC∴∠2=∠BHE,∴∠FEH=∠BHE=55°.故答案为55.三、解答题(本大题共8题,满分64分)19.计算:(×﹣2)÷【分析】直接利用二次根式的乘法运算法则分别化简得出答案.解:原式=(﹣2)÷=﹣2.20.计算.【分析】先根据平方差公式计算得到原式=(+2+﹣2)(+2﹣+2),再把括号内合并同类二次根式后进行乘法运算.解:原式=(+2+﹣2)(+2﹣+2)=2×4=8.21.利用幂的性质计算:.【分析】先把各数化为同底数幂的乘除法,再根据同底数幂的乘法与除法法则进行计算.解:原式=×÷==.22.如图,已知在△ABC中,∠B=80°,点D在BC的延长线上,∠ACD=3∠A,求:∠A的度数.【分析】利用三角形的外角的性质即可解决问题.解:∵∠ACD=∠B+∠A,∠ACD=3∠A,∴3∠A=80°+∠A,∴∠A=40°,23.如图,已知GH、MN分别平分∠AGE、∠DMF,且∠AGH=∠DMN,试说明AB∥CD的理由.解:因为GH平分∠AGE(已知),所以∠AGE=2∠AGH(角平分线的定义)同理∠DMF=2∠DMN因为∠AGH=∠DMN(已知)所以∠AGE=∠DMF(等量代换)又因为∠AGE=∠FGB(对顶角相等)所以∠DMF=∠FGB(等量代换)所以AB∥CD(同位角相等,两直线平行).【分析】根据角平分线的定义和等量关系可得∠AGE=∠DMF,再根据对顶角相等和等量关系可得∠DMF=∠FGB,再根据平行线的判定推出即可.解:因为GH平分∠AGE(已知),所以∠AGE=2∠AGH(角平分线的定义)同理∠DMF=2∠DMN因为∠AGH=∠DMN(已知)所以∠AGE=∠DMF(等量代换)又因为∠AGE=∠FGB(对顶角相等)所以∠DMF=∠FGB(等量代换)所以AB∥CD(同位角相等,两直线平行).故答案为:角平分线的定义,DMF,DMF,等量代换,对顶角相等,DMF,等量代换,同位角相等,两直线平行.24.如图,已知C是线段AB的中点,CD∥BE,且CD=BE,试说明∠D=∠E的理由.【分析】根据中点定义求出AC=CB,两直线平行,同位角相等,求出∠ACD=∠B,然后证明△ACD和△CBE全等,再利用全等三角形的对应角相等进行解答.解:∵C是AB的中点(已知),∴AC=CB(线段中点的定义).∵CD∥BE(已知),∴∠ACD=∠B(两直线平行,同位角相等).在△ACD和△CBE中,,∴△ACD≌△CBE(SAS).∴∠D=∠E(全等三角形的对应角相等).(1分)25.如图,在直角坐标平面内,已知点A(1,2).(1)把点A向右平移3个单位再向下平移2个单位,得到点B,那么点B的坐标是(4,0);(2)点C(0,﹣2),那么△ABC的面积等于7;(3)在图中画出出△ABC关于原点O对称的△A1B1C1.【分析】(1)利用点平移的坐标变换规律写出B点坐标;(2)用一个矩形的面积分别减去三个直角三角形的面积去计算△ABC的面积;(3)利用关于原点对称的点的坐标特征写出A1、B1、C1的坐标,然后描点即可.解:(1)B点坐标为(4,0);(2)S△ABC=4×4﹣×4×1﹣×3×2﹣×4×2=7;故答案为(4,0);7;(3)如图,△A1B1C1为所作.26.如图,已知点B、C、E在一直线上,△ABC、△DCE都是等边三角形,联结AE、BD.试说明AE=BD的理由.【分析】由“SAS”可证△ACE≌△BCD,可得AE=BD.解:∵△ABC,△DCE都是等边三角形,∴AC=BC,CE=CD,∠ACB=∠DCE=60°,∴∠ACE=∠BCD,在△ACE和△BCD中,,∴△ACE≌△BCD(SAS),∴AE=BD.27.如图,在△ABC中,AB⊥BC,BE⊥AC于E,AF平分∠BAC交BE于点F,DF∥BC.(1)试说明:BF=DF;(2)延长AF交BC于点G,试说明:BG=DF.【分析】(1)由角平分线的性质可得FE=FH,由“ASA”可证△DEF≌△BHF,可得BF=DF;(2)由等角的余角相等可得∠AFE=∠AGB=∠BFG,可得BF=BG=DF.【解答】证明:(1)如图,延长DF交AB于H,延长AF交BC于G,∵AB⊥BC,DF∥BC,∴DH⊥AB,∵AF平分∠BAC,BE⊥AC,DH⊥AB,∴FE=FH,又∵∠DFE=∠BFH,∠DEF=∠BHF=90°,∴△DEF≌△BHF(ASA),∴BF=DF;(2)∵AF平分∠BAC,∴∠EAF=∠BAG,∵∠EAF+∠AFE=90°,∠BAG+∠AGB=90°,∴∠AFE=∠AGB,∴∠BFG=∠AGB,∴BF=BG,∴BG=DF.。

2019-2020学年第一学期期末教学质量检测 初一年级 语文 试卷及参考答案

2019-2020学年第一学期期末教学质量检测 初一年级 语文 试卷及参考答案

2020学年第一学期期末教学质量检测七年级语文(参考答案)【阅卷意见】1.阅卷时要结合学生的实际,主观题大意准确即可以给满分。

2.要有利于发挥学生的创造性,对参考答案不符但确有创造性的、合理的答案,要慎重考虑,合理给分。

3.对争议较大的作文应提出讨论。

【参考答案】四30分123A 133B144风筝是“人类最早的飞行器”。

外观方面,现代飞机与古代风筝外观高度一致;功用方面。

风筝最早用于军事侦察和作战,中唐开始转为民用,主要是娱乐功能。

现代飞行器主要分民用、军用。

前者用于客运、货运,联通世界;后者用于作战、侦查、科研等。

(答案仅供参考,不必拘泥某些字眼,言之成理即可)153嫦娥:嫦娥奔月的神话故事在我国家喻户晓,是古人征服大自然、探索宇宙奥秘的明证。

“玉魄东方开,嫦娥逐影来”,充满中国式的浪漫主义色彩。

以嫦娥命名系列登月探测器,合乎中国神话故事,富有民族、文化色彩,容易为人们理解和接受。

鲲龙:庄周《逍遥游》“北冥有鱼,其名为鲲。

鲲之大,不知其几千里也;化而为鸟,其名为鹏。

鹏之背,不知其几千里也;怒而飞,其翼若垂天之云”。

鲲是大鱼,善游;是大鹏鸟,善飞。

龙,我国神话传说中司掌行云布雨,能呼风唤雨的神奇生物,后来演变为是中华民族的民族图腾,象征皇权和祥瑞。

以“鲲龙”命名水陆两栖大飞机,形神具备,富有民族、文化色彩,容易为人们理解和接受。

(不要求引经据典,能够阐述大意即可赋满分)163(答案仅供参考,不必拘泥字数,概括出主要内容即可)173“竟”,出乎意料、不同一般。

作者出身农村,对农民和农村怀着深厚的感情。

虽已超拔世情,仍然心系国计民生。

久旱未雨,作者忧心如焚。

现在终于下雨了,一个“竟”字表达作者难以控制的喜悦之情。

(2分)此句为过渡句,起到承上启下的作用。

承接上文,是对雅人听雨三重境界,特别是自己超拔世情,“不喜亦不惧”的小结;引出下文,叙述自己喜欢下雨、听雨的原因。

(1分)(“竟”字解释,1分,赏析,1分。

沪教版2019-2020学年七年级下学期月考英语试卷(I)卷

沪教版2019-2020学年七年级下学期月考英语试卷(I)卷

沪教版2019-2020学年七年级下学期月考英语试卷(I)卷一、听句子,选出句子中所包含的信息。

(共5小题,每小题1分,计5 (共5题;共5分)1. (1分)听句子,选择正确的应答语。

A . His name is Jack.B . Her first name is Gina.C . My first name is Bob.2. (1分)选择最佳应答语()A . Yes, he can.B . No, I don't.C . Yes, I like bread.3. (1分)选出所听到的单词或短语()A . thisB . thoseC . they4. (1分)听句子, 选择最佳答语A . Every day.B . Four hours.C . Tomorrow.5. (1分)选出与你听到的句子意思最相近的句子()A . The noise from the neighbour made me stop sleeping last night.B . The noise from the neighbour made me so angry last night.C . I didn't hear the noise from the neighbour last night.二、听句子,选出该句的最佳答语。

(共5小题,每小题1分,计5分) (共5题;共5分)6. (1分)听句子,选择最佳答语()A . That's all right.B . Sure, they are over there.C . It's right7. (1分)选出能对每个句子做出适当反应的答语。

A . Twice a week.B . On Monday.C . For a week.8. (1分)听句子,选择最佳应答语A . With my friends.B . At home.C . I had a good time.9. (1分)听问句,选出最佳答语()A . That is my father.B . It's a map.C . They're dogs.10. (1分)听句子,选择最佳应答语A . Yes, please.B . No, thanks.C . Sorry, I' m new here.三、听对话和问题,选择正确答案。

沪教版2019-2020学年七年级上学期英语教学质量检测(一)B卷

沪教版2019-2020学年七年级上学期英语教学质量检测(一)B卷

沪教版2019-2020学年七年级上学期英语教学质量检测(一)B卷一、听句子,选出所听到的单词或短语。

(共8题;共16分)1. (2分)听句子,选择你所听到的信息()A . She can't play the violin.B . She is good at playing the violin.C . She can't play the violin very well but she's still learning.2. (2分)听录音,选出你所听到字母或字母组合()A . NBAB . WTOC . VIP3. (2分)听单词选出作为该单词音标的正确选项()A . ['laɪvlɪ]B . ['ləʊnlɪ]C . [leɪt]4. (2分)听句子,选出句子中所包含的信息()A . catB . capC . cup5. (2分)听句子,选择句子中所包含的单词()A . mathsB . messC . meat6. (2分)选出听到的单词()A . take offB . take awayC . take place7. (2分)Who visited the boy's family?A . His aunt.B . His uncle.C . His friend.8. (2分)选出听到的单词()A . himselfB . herselfC . itself二、听两段长对话,回答问题。

(共3题;共24分)9. (10分)听一段对话,回答小题。

(1)How long is the library open a day at weekends? (2)What should Jim take to the library?10. (4分)听第一段封话,回答小题。

(1)What:is the symbol of Zhou Yang's hometown?A . An old tower.B . An old tree.C . An old house.(2)How long has the symbol been there?A . For 50 years.B . For 100 years.C . For 150 years.11. (10分)听第3段材料,完成小题。

2019-2020学年上海市松江区七年级(下)期末数学试卷(解析版)

2019-2020学年上海市松江区七年级(下)期末数学试卷(解析版)

2019-2020学年上海市松江区七年级(下)期末数学试卷一.填空题(共14小题)1.16的平方根是.2.=.3.比较大小:2(填“>”或“<”或“=”)4.请写出一个大于1且小于2的无理数.5.截止2020年6月5日,全世界感染新冠肺炎的人数约为6650000人,数字6650000用科学记数法表示,并保留2个有效数字,应记为.6.一个实数在数轴上对应的点在负半轴上,且到原点距离等于,则这个数为.7.在平面直角坐标系中,将点A(﹣3,﹣1)向右平移3个单位后得到的点的坐标是8.在平面直角坐标系中,点P(m+3,m+1)在y轴上,则m=.9.已知:如图,直线a∥b,直线c与a,b相交,若∠2=115°,则∠1=度.10.如图,AD∥BC,BD平分∠ABC,且∠A=110°,则∠D=°.11.如果等腰三角形的两条边长分别等于3厘米和7厘米,那么这个等腰三角形的周长等于厘米.12.如图,直线a∥b,点A,B位于直线a上,点C,D位于直线b上,且AB:CD=1:2,如果△ABC的面积为10,那么△BCD的面积为.13.如图,在△ABC中,两个内角∠BAC与∠BCA的角平分线交于点D,若∠B=70°,则∠D=度.14.如图,在△ABC中,∠A=100度,如果过点B画一条直线l能把△ABC分割成两个等腰三角形,那么∠C度.二.选择题(共4小题)15.下列等式中,正确的有()A.B.C.D.16.如图,在下列条件中,能说明AC∥DE的是()A.∠A=∠CFD B.∠BED=∠EDFC.∠BED=∠A D.∠A+∠AFD=180°17.利用尺规作∠AOB的角平分线OC的作图痕迹如图所示,说明∠AOC=∠BOC用到的三角形全等的判定方法是()A.SSS B.SAS C.ASA D.AAS18.如图,关于△ABC,给出下列四组条件:①△ABC中,AB=AC;②△ABC中,∠B=56°,∠BAC=68°;③△ABC中,AD⊥BC,AD平分∠BAC;④△ABC中,AD⊥BC,AD平分边BC.其中,能判定△ABC是等腰三角形的条件共有()A.1组B.2组C.3组D.4组三.解答题19.计算:3÷﹣27+()﹣1﹣(+2)0.20.利用幂的性质进行计算:4×8÷2.21.在△ABC中,已知∠A:∠B:∠C=2:3:5,求∠A、∠B、∠C的度数.22.如图,已知AD∥BC,点E是AD的中点,EB=EC.试说明AB与CD相等的理由.23.如图,已知DE∥BC,EF平分∠CED,∠A=∠CFE,那么EF与AB平行吗?为什么?解:因为DE∥BC(已知)所以∠DEF=∠CFE()因为(已知)所以∠DEF=∠CFE(角平分线的意义)所以∠=∠CEF(等量代换)因为∠A=∠CFE(已知)所以∠A=()所以EF∥BC()24.在平面直角坐标系中,已知点A的坐标为(3,2).设点A关于y轴的对称点为B,点A关于原点O的对称点为C,点A绕点O顺时针旋转90°得点D.(1)点B的坐标是;点C的坐标是;点D的坐标是;(2)顺次联结点A、B、C、D,那么四边形ABCD的面积是.25.如图,已知在△ABC中,点D为AC边上一点,DE∥AB交边BC于点E,点F在DE的延长线上,且∠FBE=∠ABD,若∠DEC=∠BDA.(1)试说明∠BDA=∠ABC的理由;(2)试说明BF∥AC的理由.26.如图,在Rt△ABC中,∠ACB=90°,AC=BC,点D在边BC上(不与点B、C重合),BE⊥AD,重足为E,过点C作CF⊥CE,交线段AD于点F.(1)试说明△CAF≌△CBE的理由;(2)数学老师在课堂上提出一个问题,如果EF=2AF,试说明CD=BD的理由.班级同学随后进行了热烈讨论,小明同学提出了自己的想法,可以取EF的中点H,联结CH,就能得出结论,你能否能根据小明同学的想法,写出CD=BD的理由.27.如图,在等边△ABC中,已知点E在直线AB上(不与点A、B重合),点D在直线BC上,且ED=EC.(1)若点E为线段AB的中点时,试说明DB=AE的理由;(2)若△ABC的边长为2,AE=1,求CD的长.2019-2020学年上海市松江区七年级(下)期末数学试卷参考答案与试题解析一.填空题(共14小题)1.16的平方根是±4.【分析】根据平方根的定义,求数a的平方根,也就是求一个数x,使得x2=a,则x就是a的平方根,由此即可解决问题.【解答】解:∵(±4)2=16,∴16的平方根是±4.故答案为:±4.2.=﹣2.【分析】因为﹣2的立方是﹣8,所以的值为﹣2.【解答】解:=﹣2.故答案为:﹣2.3.比较大小:>2(填“>”或“<”或“=”)【分析】根据2=<即可得出答案.【解答】解:∵2=<,∴>2,故答案为:>.4.请写出一个大于1且小于2的无理数.【分析】由于所求无理数大于1且小于2,两数平方得大于2小于4,所以可选其中的任意一个数开平方即可.【解答】解:大于1且小于2的无理数是,答案不唯一.故答案为:.5.截止2020年6月5日,全世界感染新冠肺炎的人数约为6650000人,数字6650000用科学记数法表示,并保留2个有效数字,应记为 6.7×106.【分析】科学记数法的表示形式为a×10n的形式,其中1≤|a|<10,n为整数.确定n 的值时,要看把原数变成a时,小数点移动了多少位,n的绝对值与小数点移动的位数相同.【解答】解:将6650000用科学记数法表示为:6.7×106.故答案为:6.7×106.6.一个实数在数轴上对应的点在负半轴上,且到原点距离等于,则这个数为﹣.【分析】直接利用数轴的特点得出到原点距离等于的数字.【解答】解:∵一个实数在数轴上对应的点在负半轴上,且到原点距离等于,∴这个数为:﹣.故答案为:﹣.7.在平面直角坐标系中,将点A(﹣3,﹣1)向右平移3个单位后得到的点的坐标是(0,﹣1)【分析】根据横坐标,右移加,左移减;纵坐标,上移加,下移减可得答案.【解答】解:将点A(﹣3,﹣1)向右平移3个单位长度,得到对应点B,则点B的坐标是(﹣3+3,﹣1),即(0,﹣1),故答案为(0,﹣1).8.在平面直角坐标系中,点P(m+3,m+1)在y轴上,则m=﹣3.【分析】直接利用y轴上点的坐标特点进而得出答案.【解答】解:∵点P(m+3,m+1)在y轴上,∴m+3=0,解得:m=﹣3.故答案为:﹣3.9.已知:如图,直线a∥b,直线c与a,b相交,若∠2=115°,则∠1=65度.【分析】利用平行线的性质及邻补角互补即可求出.【解答】解:∵a∥b,∴∠1=∠3,∵∠2=115°,∴∠3=180°﹣115°=65°(邻补角定义),∴∠1=∠3=65°.故填65.10.如图,AD∥BC,BD平分∠ABC,且∠A=110°,则∠D=35°.【分析】根据平行线的性质先求得∠ABC的度数,再根据角平分线的性质及平行线的性质求得∠D的度数.【解答】解:∵AD∥BC,∠A=110°,∴∠ABC=180﹣∠A=70°;又∵BD平分∠ABC,∴∠DBC=35°;∵AD∥BC,∴∠D=∠DBC=35°.故答案为:35.11.如果等腰三角形的两条边长分别等于3厘米和7厘米,那么这个等腰三角形的周长等于17厘米.【分析】分两种情况讨论:当3厘米是腰时或当7厘米是腰时.根据三角形的三边关系,知3,3,7不能组成三角形,应舍去.【解答】解:当3厘米是腰时,则3+3<7,不能组成三角形,应舍去;当7厘米是腰时,则三角形的周长是3+7×2=17(厘米).故答案为:17.12.如图,直线a∥b,点A,B位于直线a上,点C,D位于直线b上,且AB:CD=1:2,如果△ABC的面积为10,那么△BCD的面积为20.【分析】根据两平行线间的距离处处相等,结合三角形的面积公式,知△BCD和△ABC 的面积比等于CD:AB,从而进行计算.【解答】解:∵a∥b,∴△ABC的面积:△BCD的面积=AB:CD=1:2,∴△BCD的面积=10×2=20.故答案为:20.13.如图,在△ABC中,两个内角∠BAC与∠BCA的角平分线交于点D,若∠B=70°,则∠D=125度.【分析】根据三角形内角和以及∠B的度数,先求出(∠BAC+∠BCA),然后根据角平分线的性质求出(∠DAC+∠ACD),从而再次利用三角形内角和求出∠ADC.【解答】解:∵AD、CD是∠BAC与∠BCA的平分线,∴∠ADC=180°﹣(∠DAC+∠ACD)=180°﹣(∠BAC+∠BCA)=180°﹣(180°﹣∠B)=90°+∠B=125°,故答案为:125.14.如图,在△ABC中,∠A=100度,如果过点B画一条直线l能把△ABC分割成两个等腰三角形,那么∠C=20度.【分析】设过点B的直线与AC交于点D,则△ABD与△BCD都是等腰三角形,根据等腰三角形的性质,得出∠ADB=∠ABD=40°,∠C=∠DBC,根据三角形外角的性质即可求得∠C=20°.【解答】解:如图,设过点B的直线与AC交于点D,则△ABD与△BCD都是等腰三角形,∵∠A=100度,∴∠ADB=∠ABD=40°,∵CD=BD,∴∠C=∠DBC,∵∠ADB=∠C+∠DBC=2∠C,∴2∠C=40°,∴∠C=20°,故答案为=20.二.选择题(共4小题)15.下列等式中,正确的有()A.B.C.D.【分析】根据二次根式的运算法则依次计算即可求解.【解答】解:A、无意义,故错误;B、,故正确;C、﹣=﹣5,故错误;D、,故错误;故选:B.16.如图,在下列条件中,能说明AC∥DE的是()A.∠A=∠CFD B.∠BED=∠EDFC.∠BED=∠A D.∠A+∠AFD=180°【分析】直接利用平行线的判定方法分析得出答案.【解答】解:A、当∠A=∠CFD时,则AB∥DF,不合题意;B、当∠BED=∠EDF时,则AB∥DF,不合题意;C、当∠BED=∠A时,则AC∥DE,符合题意;D、当∠A+∠AFD=180°时,则AB∥DF,不合题意;故选:C.17.利用尺规作∠AOB的角平分线OC的作图痕迹如图所示,说明∠AOC=∠BOC用到的三角形全等的判定方法是()A.SSS B.SAS C.ASA D.AAS【分析】由全等三角形的判定定理即可得出结论.【解答】解:如图,连接CD,CE,由作法可知OE=OD,CE=CD,OC=OC,故可得出△OCE≌△OCD(SSS),所以∠AOC=∠BOC,所以OC就是∠AOB的平分线.故选:A.18.如图,关于△ABC,给出下列四组条件:①△ABC中,AB=AC;②△ABC中,∠B=56°,∠BAC=68°;③△ABC中,AD⊥BC,AD平分∠BAC;④△ABC中,AD⊥BC,AD平分边BC.其中,能判定△ABC是等腰三角形的条件共有()A.1组B.2组C.3组D.4组【分析】根据等腰三角形的判定定理逐个判断即可.【解答】解:①、∵△ABC中,AB=AC,∴△ABC是等腰三角形,故①正确;②、∵△ABC中,∠B=56°,∠BAC=68°,∴∠C=180°﹣∠BAC﹣∠B=180°﹣68°﹣56°=56°,∴∠B=∠C,∴△ABC是等腰三角形,故②正确;③∵△ABC中,AD⊥BC,AD平分∠BAC,∴∠BAD=∠CAD,∠ADB=∠ADC,∵∠B+∠BAD+∠ADB=180°,∠C+∠CAD+∠ADC=180°,∴∠B=∠C,∴△ABC是等腰三角形,故③正确;④、∵△ABC中,AD⊥BC,AD平分边BC,∴AB=AC,∴△ABC是等腰三角形,故④正确;即正确的个数是4,故选:D.三.解答题19.计算:3÷﹣27+()﹣1﹣(+2)0.【分析】直接利用零指数幂的性质和二次根式的性质、负指数幂的性质分别化简得出答案.【解答】解:原式=﹣3+﹣1=1﹣.20.利用幂的性质进行计算:4×8÷2.【分析】直接利用幂的乘方运算法则以及同底数幂的乘除运算法则计算得出答案.【解答】解:4×8÷2=2×2÷2=2=22=4.21.在△ABC中,已知∠A:∠B:∠C=2:3:5,求∠A、∠B、∠C的度数.【分析】设∠A=2x,则∠B=3x,∠C=5x,再根据三角形的内角和是180°列出关于x 的方程,求出x的值,即可得出各角的度数.【解答】解:∵在△ABC中∠A:∠B:∠C=2:3:5,∴设∠A=2x,则∠B=3x,∠C=5x,∵∠A+∠B+∠C=180°,即2x+3x+5x=180°,解得x=18°,∴∠A=2×18°=36°,∠B=3×18°=54°,∠C=5×18°=90°.答:∠A、∠B、∠C的度数分别为:36°,54°,90°.22.如图,已知AD∥BC,点E是AD的中点,EB=EC.试说明AB与CD相等的理由.【分析】由于AD∥BC,利用平行线的性质可得∠AEB=∠1,∠DEC=∠2,而EB=EC,根据等边对等角可得∠EBC=∠ECB,等量代换可证∠AEB=∠DEC,再结合AE=DE,EB=EC,利用AAS可证△AEB≌△EDC,从而有AB=CD.【解答】解:∵AD∥BC,∴∠AEB=∠1,∠DEC=∠2,∵EB=EC,∴∠EBC=∠ECB,∴∠AEB=∠DEC,在△AEB与△EDC中,,∴△AEB≌△EDC,∴AB=CD.23.如图,已知DE∥BC,EF平分∠CED,∠A=∠CFE,那么EF与AB平行吗?为什么?解:因为DE∥BC(已知)所以∠DEF=∠CFE(两直线平行,内错角相等)因为EF平分∠CED(已知)所以∠DEF=∠CFE(角平分线的意义)所以∠CFE=∠CEF(等量代换)因为∠A=∠CFE(已知)所以∠A=∠CEF(等量代换)所以EF∥BC(同位角相等,两直线平行)【分析】先根据两直线平行,内错角相等,得到∠DEF=∠CFE,再根据角平分线得出∠DEF=∠CEF,进而得到∠CFE=∠CEF,再根据∠A=∠CFE,即可得出∠A=∠CEF,进而根据同位角相等,两直线平行,判定EF∥BC.【解答】解:因为DE∥BC(已知)所以∠DEF=∠CFE(两直线平行,内错角相等)因为EF平分∠CED(已知)所以∠DEF=∠CEF(角平分线的意义)所以∠CFE=∠CEF(等量代换)因为∠A=∠CFE(已知)所以∠A=∠CEF(等量代换)所以EF∥BC(同位角相等,两直线平行)故答案为:两直线平行,内错角相等,EF平分∠CED,CFE,∠CEF,等量代换,同位角相等,两直线平行.24.在平面直角坐标系中,已知点A的坐标为(3,2).设点A关于y轴的对称点为B,点A关于原点O的对称点为C,点A绕点O顺时针旋转90°得点D.(1)点B的坐标是(﹣3,2);点C的坐标是(﹣3,﹣2);点D的坐标是(2,﹣3);(2)顺次联结点A、B、C、D,那么四边形ABCD的面积是25.【分析】(1)根据在平面直角坐标系中,点关于x轴对称时,横坐标不变,纵坐标为相反数,关于y轴对称时,横坐标为相反数,纵坐标不变,关于原点对称时,横纵坐标都为相反数,以及利用旋转的性质即可解答本题.(2)利用矩形面积减去两个三角形求出即可.【解答】解:(1)∵点A的坐标为(3,2),点A关于y轴对称点为B,∴B点坐标为:(﹣3,2),∵点A关于原点的对称点为C,∴C点坐标为:(﹣3,﹣2),∵点A绕点O顺时针旋转90°得点D,∴D点坐标为:(2,﹣3),故答案为:(﹣3,2),(﹣3,﹣2),(2,﹣3);(2)顺次连接点A、B、C、D,那么四边形ABCD的面积是:5×6﹣×1×5﹣×1×5=25.故答案为:25.25.如图,已知在△ABC中,点D为AC边上一点,DE∥AB交边BC于点E,点F在DE的延长线上,且∠FBE=∠ABD,若∠DEC=∠BDA.(1)试说明∠BDA=∠ABC的理由;(2)试说明BF∥AC的理由.【分析】(1)根据平行线的性质得出∠DEC=∠ABC,根据∠DEC=∠BDA求出∠BDA =∠ABC即可;(2)求出∠BAC=∠FBD,根据∠BDA=∠BAC得出∠BDA=∠FBD,根据平行线的判定得出即可.【解答】解:(1)理由是:∵DE∥AB,∴∠DEC=∠ABC,∵∠DEC=∠BDA,∴∠BDA=∠ABC;(2)∵∠ABD=∠FBE,∴∠ABD+∠DBE=∠FBE+∠DBE,即∠BAC=∠FBD,∵∠BDA=∠BAC,∴∠BDA=∠FBD,∴BF∥AC.26.如图,在Rt△ABC中,∠ACB=90°,AC=BC,点D在边BC上(不与点B、C重合),BE⊥AD,重足为E,过点C作CF⊥CE,交线段AD于点F.(1)试说明△CAF≌△CBE的理由;(2)数学老师在课堂上提出一个问题,如果EF=2AF,试说明CD=BD的理由.班级同学随后进行了热烈讨论,小明同学提出了自己的想法,可以取EF的中点H,联结CH,就能得出结论,你能否能根据小明同学的想法,写出CD=BD的理由.【分析】(1)由三角形内角和定理和余角的性质可得∠CAF=∠CBE,∠ACF=∠BCE,由“ASA”可证△CAF≌△CBE;(2)取EF的中点H,联结CH,由全等三角形的性质可得CF=CE,AF=BE,可证△CEF是等腰直角三角形,由等腰直角三角形的性质可得CH=FH=EH=EF,CH⊥EF,由“AAS”可证△CHD≌△BED,可得CD=BD.【解答】解:(1)∵BE⊥AD,∴∠ACB=∠BED=90°,又∵∠ADC=∠BDE,∴∠CAF=∠CBE,∵CE⊥CF,∴∠ECF=∠ACB=90°,∴∠ACF=∠BCE,又∵AC=BC,∴△CAF≌△CBE(ASA);(2)如图,取EF的中点H,联结CH,∵△CAF≌△CBE,∴CF=CE,AF=BE,∴△CEF是等腰直角三角形,∵点H是EF中点,∴CH=FH=EH=EF,CH⊥EF,∵EF=2AF,∴CH=AF=FH=EH,∴CH=BE,又∵∠CDH=∠BDE,∠CHD=∠BED=90°,∴△CHD≌△BED(AAS),∴CD=BD.27.如图,在等边△ABC中,已知点E在直线AB上(不与点A、B重合),点D在直线BC上,且ED=EC.(1)若点E为线段AB的中点时,试说明DB=AE的理由;(2)若△ABC的边长为2,AE=1,求CD的长.【分析】(1)根据等边三角形的性质得到∠BCE=30°,BE=AE,等腰三角形的判定和性质;(2)如图1,如图2,过A作AM⊥BC于M,过E作EN⊥BC于N,根据等边三角形的性质和平行线分线段成比例定理即可得到结论.【解答】解:(1)∵△ABC是等边三角形,E为AB的中点,∴∠BCE=30°,BE=AE,∵ED=EC,∴∠EDB=∠BCE=30°,∵∠ABD=120°,∴∠DEB=30°,∴DB=EB,∴AE=DB;(2)如图1,∵AB=2,AE=1,∴点E是AB的中点,由(1)知,BD=AE=1,∴CD=BC+BD=3;如图2,过A作AM⊥BC于M,过E作EN⊥BC于N,∵AB=AC,DE=CE,∴BM=BC=3,CD=2CN,∵AM⊥BC,EN⊥BC,∴AM∥EN,∴=,∴=,∴BN=,∴CN=BC﹣BN=,∴CD=1,综上所述,CD的长为1或3.。

2020-2021学年沪教版七年级数学下学期期末仿真必刷卷05(教师版)

2020-2021学年沪教版七年级数学下学期期末仿真必刷卷05(教师版)

2020-2021学年七年级下学期数学期末仿真必刷模拟卷【沪教版】期末测试05姓名:__________________ 班级:______________ 得分:_________________注意事项:本试卷满分100分,考试时间120分钟,试题共25题.答卷前,考生务必用0.5毫米黑色签字笔将自己的姓名、班级等信息填写在试卷规定的位置.一、选择题(本大题共6小题,每小题2分,共12分)在每小题所给出的四个选项中,只有一项是符合题目要求的1.下列实数中,是无理数的是()A.16B.C.0.D.【答案】B【解答】解:无限不循环的小数是无理数,故选:B.【知识点】算术平方根、分数指数幂、无理数2.下列运算一定正确的是()A.=a B.=C.a2•b2=(a•b)2D.=a(a≥0)【答案】C【解答】解:A、=|a|,故此选项错误;B、=,成立,则a,b均为非负数,故此选项错误;C、a2•b2=(a•b)2,正确;D、=(a≥0),故此选项错误;故选:C.【知识点】二次根式的乘除法、二次根式的性质与化简、幂的乘方与积的乘方、分数指数幂3.如果三角形的两边长分别是5厘米、7厘米,那么这个三角形第三边的长可能是()A.12厘米B.10厘米C.2厘米D.1厘米【答案】B【解答】解:∵三角形的两边长分别是5厘米、7厘米,∴设这个三角形第三边长为x,则x的取值范围是:2<x<12,故这个三角形第三边的长可能是10cm.故选:B.【知识点】三角形三边关系4.在平面直角坐标系中,将点P(﹣2,1)向右平移3个单位长度,再向上平移4个单位长度得到点P的坐标是()A.(1,5)B.(1,﹣3)C.(﹣5,5)D.(﹣5,﹣3)【答案】A【解答】解:将点P(﹣2,1)向右平移3个单位长度,再向上平移4个单位长度得到点P的坐标是(﹣2+3,1+4),即(1,5),故选:A.【知识点】坐标与图形变化-平移5.如图,根据下列条件,不能说明△ABD≌△ACD的是()A.BD=DC,AB=AC B.∠ADB=∠ADC,∠BAD=∠CADC.∠B=∠C,∠BAD=∠CAD D.∠ADB=∠ADC,AB=AC【答案】D【解答】解:A、由BD=DC、AB=AC,结合AD=AD可得△ACD≌△ABD;B、由∠ADB=∠ADC,∠BAD=∠CAD,结合AD=AD可得△ACD≌△ABD;C、由∠B=∠C、∠BAD=∠CAD,结合AD=AD可得△ACD≌△ABD;D、由∠ADB=∠ADC、AB=AC不能说明△ABD≌△ACD;故选:D.【知识点】全等三角形的判定6.如图,△ABC≌△AED,点D在BC边上,BC∥AE,∠CAB=80°,则∠BAE的度数是()A.35°B.30°C.25°D.20°【答案】D【解答】解:∵△ABC≌△AED,∴∠CAB=∠DAE=80°,∵BC∥AE,∴∠CDA=∠DAE=80°∵AC=AD,∴∠C=∠ADC=80°,∴∠CAD=20°,∵∠CAB=∠DAE,∴∠CAD=∠BAE=20°故选:D.【知识点】全等三角形的性质二、填空题(本大题共12小题,每小题2分,共24分.不需写出解答过程,请把答案直接填写在横线上)7.4的平方根是.【答案】±2【解答】解:∵(±2)2=4,∴4的平方根是±2.故答案为:±2.【知识点】平方根8.计算:=.【答案】2【解答】解:8==2.故答案为2.【知识点】分数指数幂9.比较大小:﹣5﹣(填“>”“=”或“<”).【答案】>【解答】解:(﹣5)2=25,=26,∵25<26,∴﹣5>﹣.故答案为:>.【知识点】实数大小比较10.用科学记数法表示405500,并保留三个有效数字的近似数表示为.【答案】4.06×105【解答】解:405500=4.055×105≈4.05×105.故答案为:4.06×105.【知识点】科学记数法与有效数字11.计算:4×=.【答案】6【解答】解:原式=×=2×3=6,故答案为:6.【知识点】分数指数幂12.若点A(a+1,b)在第二象限,则点B(﹣a,b+1)在象限.【答案】第一【解答】解:由A在第二象限可知:a+1<0,b>0,即a<﹣1,b>0,则可得到:﹣a>1,b+1>1,故B点在第一象限.故答案为:第一.【知识点】点的坐标13.等腰三角形的一边长为2,另一边长为5,则它的周长是.【答案】12【解答】解:当2为底时,其它两边都为5,2、5、5可以构成三角形,周长为12;当2为腰时,其它两边为2和5,∵2+2=4<5,所以不能构成三角形,故舍去,∴答案只有12.故填12.【知识点】三角形三边关系、等腰三角形的性质14.在直角坐标平面内,点M(﹣2,3)关于y轴对称的点的坐标是.【答案】(2,3)【解答】解:点M(﹣2,3)关于y轴对称的点的坐标是(2,3),故答案为:(2,3).【知识点】关于x轴、y轴对称的点的坐标15.等腰三角形中,有一个角等于40°,则这个三角形的底角等于.【答案】70°或40°【解答】解:(1)当40°角本身为底角时,底角就是40°;(2)当40°角为顶角时,底角=(180°﹣40°)=70°.∴底角为70°或40°.故填70°或40°.【知识点】三角形内角和定理、等腰三角形的性质16.如图,在△ABC中,∠ABC、∠ACB的平分线BE、CD相交于点F,∠A=60°,则∠BFC=.【答案】120°【解答】解:∵∠ABC、∠ACB的平分线BE、CD相交于点F,∴∠CBF=∠ABC,∠BCF=∠ACB,∵∠A=60°,∴∠ABC+∠ACB=180°﹣∠A=120°,∴∠BFC=180°﹣(∠CBF+BCF)=180°﹣(∠ABC+∠ACB)=120°.故答案为:120°.【知识点】三角形内角和定理17.如图,已知△ABC是等边三角形,D为BC延长线上一点,CE平分∠ACD,CE=BD,AD=7,那么AE的长度是.【答案】7【解答】解:∵△ABC为等边三角形,∴AB=AC,∠B=∠ACB=60°,∴∠ACD=120°,∵CE平分∠ACD,∴∠ACE=∠ACD=60°,在△ABD和△ACE中,∴△ABD≌△ACE,∴AE=AD=7.故答案为7.【知识点】等边三角形的性质、全等三角形的判定与性质18.如图,在△ABC中,D是AB上一点,将△BCD沿直线CD翻折,使B点落在AC边所在的直线上的B′处,如果DC=DB′=AB′,则∠B等于度.【解答】解:∵△BCD沿直线CD翻折∴DB=DB',∠B=∠DB'C∵AB'=DB'=DC=DB∴∠A=∠ADB',∠DB'C=∠DCB',∠B=∠DCB设∠A=x°则∠ADB'=x∴∠DB'C=2x=∠DCB'=∠B=∠DCB根据三角形内角和定理可得:∴x+2x+4x=180°x=∴∠B=2x=故答案为【知识点】等腰三角形的性质、翻折变换(折叠问题)三、解答题(本大题共7小题,共64分.请在答题卡指定区域内作答,解答时应写出文字说明、证明过程或演算步骤)19.利用幂的运算性质计算:2××÷.【解答】解:原式=2××÷==23=8.【知识点】分数指数幂20.计算:+()0﹣()﹣1.【解答】解:原式=﹣1+1﹣+1=1.【知识点】实数的运算、零指数幂、负整数指数幂21.已知:如图,CD∥EF,∠BFE=∠DHG,那么EG与AB平行吗?为什么?【解答】解:平行,理由:∵CD∥EF,∴∠BDC=∠BFE,又∵∠BFE=∠DHG,∴∠BDC=∠DHG,∴EG∥AB.【知识点】平行线的判定与性质22.如图,已知CA=CD,CB=CE,∠ACB=∠DCE,试说明△ACE≌△DCB的理由.【解答】解:∵∠ACB=∠DCE,∴∠ACB﹣∠ACD=∠DCE﹣∠ACD,即:∠ACE=∠DCB,在△ACE与△DCB中,∴△ACE≌△DCB(SAS).【知识点】全等三角形的判定23.如图,点D,E分别是△ABC的边BC上两点,请你在下列三个式子 AB=AC,AD=AE, BD=CE中,选两个作为条件,余下的一个作为结论,编写一个说理题,并进行解答.如图,已知点D,E分别是△ABC的边BC上两点,,那么吗?为什么?【答案】【第1空】AB=AC,【第2空】BD=EC【第3空】AD=AE【解答】解:如图,已知点D,E分别是△ABC的边BC上两点AB=AC,BD=EC,求证:AD=AE 故答案为:AB=AC,BD=EC,AD=AE;理由:∵AB=AC(已知)∴∠B=∠C(等边对等角)在△ABD与△ACE中,∴△ABD≌△ACE(SAS),∴AD=AE(全等三角形的对应边相等).【知识点】全等三角形的判定与性质24.如图,在直角坐标平面内,O为坐标原点,A(﹣1,2),B(﹣1,﹣1),C(﹣2,﹣3),△A1B1C1与△ABC关于原点O对称.(1)在图中分别画出△ABC、△A1B1C1;(2)求△A1B1C1的面积.【解答】解:(1)如图所示:(2)△A1B1C1的面积=×3×1=.【知识点】作图-旋转变换、三角形的面积25.如图,若将△ABC顶点横坐标增加4个单位,纵坐标不变,三角形将如何变化?若将△ABC顶点横坐标都乘以﹣1,纵坐标不变,三角形将如何变化?【解答】解:横坐标增加4个单位,纵坐标不变,所得各顶点的坐标依次是A(1,3),B(1,1),C(3,1),连接AB、AC、BC,整个三角形向右平移4个单位;横坐标都乘以﹣1,纵坐标不变,所得各顶点的坐标依次是A(3,3),B(3,1),C(1,1),连接AB、AC、BC,所得到的三角形与原三角形关于y轴对称.【知识点】坐标与图形变化-对称。

沪教版英语七年级下学期期末测试卷二

沪教版英语七年级下学期期末测试卷二

沪教牛津版英语七年级下学期期末测试卷二一、词汇测试。

1.﹣Brown,when will we arrive at the small town?﹣3o'clock tomorrow afternoon.()A.get to B.leave for C.turn on2.﹣Charlie,don't read in the sun!It is bad for your eyes!﹣Oh,I won't do that again.()A.is good for B.is harmful toC.is strict about3.﹣Daisy,do you need any help with your math problem?﹣No,thanks.I can work it out by myself.()A.all the time B.as wellC.on my own4.﹣Dancer,when should we discuss the problem?﹣This afternoon.Let's have a meeting for it.()A.talk about B.work out C.find out5.﹣Run quickly,Tim!There are a crowd of bees flying to us.﹣Oh!How can we protect us from them?()A.a kind of B.a part of C.a group of6.﹣Jones,please turn off the light of your bedroom.﹣Sorry,Daddy.I forgot that and I'm going to do that.()A.get off B.take off C.switch off7.﹣Kevin,where do you prefer to live now?﹣I prefer to live in the countryside.()A.hope…better B.want …worseC.like …better8.﹣Smith,what would you like to do as your career?﹣I would like to be a teacher in the future.()A.skill B.job C.poem二、从下面每小题的A、B、C 三个选项中选出最佳答案.9.If something is ,it is useful for you.()A.possible B.helpful C.successful10.Your is the details of where you live or work.()A.address B.direction C.fair11.﹣Jerry,I am my spoken English.﹣Take it easy,Jones.I can give you some advice.()A.worried about B.proud ofC.surprised at12.﹣Suzy,be careful with the flowers.They glass.﹣Really?If so,they are easy to break.()A.are good for B.are close toC.are made of13.﹣Don't in class,Dora.Just listen to me carefully.﹣Sorry,I won't do that again.()A.look after B.look forC.look around 14.﹣Hello,is that Mr Brown?﹣Sorry,he isn't at home.He just now.()A.turned off B.went outsideC.stayed inside15.﹣What do you think of Mr Lee's classes?﹣I think they are reallyand interesting.A.boring B.lively C.convenient二、完形填空阅读下面短文,从短文后所给的A、B、C 三个选项中选出能填入相应空白处的最佳选项,并在答题卷上将相应的字母编号涂黑.16.This is a story about a boy,whose name is Harry.He is Mr Walker's(1).When he was fouryears old,he had a child's(2).It was red.But when he became older,the bike was too small for him.Then Harry did not have a bike for a(3)time.Now he is twelve years old,and he needs a new bike.Mr Walker(4)by car every day,and he takes Harry to school,and brings him back when his classes(5)."A lot of my friends have bicycles,and they(6)to school on them,"Harry said to his father one day."Their fathers don't need to take them to(7)and bring them home."Then Mr Walker(8)his car at a red light and looked at Harry."Your mother and I are going to give you a bicycle next month,but first I'm going to (9)you some questions.Now,look at those traffic lights.Do you know their meanings?""Oh,yes,I do!"Harry answered(10)."Red is‘Stop',green is‘Go'and yellow is‘Go very quickly'."What a surprise!1.A.student B.grandson C son2.A.toy B.bike C.car3.A.long B.slow C.quick4.A.goes to bed B.goes to school C.goes to work5.A.end B.leave C.follow6.A.run B.ride C.move7.A.field B.market C.school8.A.stopped B.found C.sold9.A.teach B.ask C.answer10.A.helpfully B.sadly C.happily三、阅读理解,阅读下列短文,从下面每小题的A、B、C、D 四个选项中选出最佳选项,并在答题卷上将相应的子母编号涂黑.17.Hi,everybody!The following are some of my classmates.They talk about their friends.of fun in his classes and also we learn a lot about English in his classes.1.What does Ben look like?A.Short and fat with long hair.B.Short and think with blue hairC.Tall and thin with gray hair.D.Tall and strong with dark hair.2.What does the underlined word"cuisine"mean?A.Cooking.B.Dancing.C.Drawing.D.Playing.3.Which of the following is RIGHT according to the passage?A.Jimmy's uncle Brown is an interesting man.B.Jimmy talks about his uncle onThursday.C.Joyce's English teacher is MrDavid.D.Joyce seldom hears any jokes inclass.4.Why did the writer write the passage?A.To tell us some interesting stories.B.To give information about some people.C.To give information about some jobs.D.To let us make more friends with others.18.Charlie liked sports very much and he was good at table tennis.And he almost won all the table t ennismatches in his school.If he won,he would feel good.If he didn't win,he would feel badAt the second term,a new student,Billy,came to study in Charlie's school.Billy was good at table tennis too.Soon there would be a match between Charlie and Billy.Billy worked hard to get ready for the match,but Charlie didn't think much of it.When the match began,Billy didn't look like a good player.There was always a smile on his face,while Charlie looked nervous all the time because he just wanted to win.Charlie thought it was more important to win the match than anything,but he didn't win at last."You played very well,Charlie.I think we can play again sometime,"said Billy.But Charlie felt bad and he couldn't fall asleep that night.One day,Charlie saw Billy playing basketball again and again and he didn't win.But the happy smilenever left Billy's face.Whether he won the game or not,Billy enjoyed it.Charlie came to realize that enjoying a game was much more important than winning it.After that,he changed.1.How did Charlie feel when he won a match?A.HappyB.Nervous.C.Tired.D.Bored.2.Why did Charlie lose the table tennis match?A.Because he was not good at table tennis.B.Because he didn't get ready for the match.C.Because he was not happy that day.D.Because he didn't enjoy thematch.3.Which of the following is TRUE?A.Charlie didn't care about winning atfirst.B.Billy won the table tennis match by goodluck.C.Billy was not very good atbasketball.D.Charlie and Billy became goodfriends at last.4.What can we learn from thepassage?A.Do what we are good at;B.Enjoy what we are doing now.C.We should always smile.D.Being happy is very important.19.One day,a young man saw an old man planting a tree in his garden.He asked the old m an,"Whatkind of tree are you planting there?""This is a fig (无花果)tree,"the old man said."A fig tree?"the young man was very surprised﹣"Why,how old are you?"I am ninety years old.""What!"cried the young man."You're ninety years old.You are planting a very young tree now and it'll take years to give fruit.You certainly won't live long enough to get any fruit from this tree.The old man looked around the garden.Then he said with a smile,"Did you eat figs when you were a boy?""Sure,"the young man answered and he did not know why the old man asked this question.Then the old man asked,"Who planted the fig trees?""I don't know.""You see,Sir."The old man said slowly."Our ancestors planted trees for us to enjoy and I am doing the same for the people after me."The young man said,"You are right.We should do some things for the people after us.1.What was the old man doing when the young man saw him?A.Planting flowers.B.Planting a tree.C.Watering the plants.D.Having a rest.2.How did the young man feel at first?A.Sad.B.Happy.C.Surprised.D.Excited.3.What does the underlined word"ancestors"mean?A.People who lived a long time ago.B.People who live in the future,C.People who live in the countryside.D.People who live in the moderncity.4.What can we learn from the passage?A.We should do everything for ourchildren.B.We should find something interesting to do every day.C.We should do something useful for the people after us.D.We should be friendly to the people around us.20.There is a forest beside my house.It is my favourite place.There I can hear the different sounds of theanimals and the singing of birds.When I go there myself,it is happy to draw trees in a quietenvironment.When 1go there with someone,I also enjoy talking in such a good place.I lovenature.Here you can think about the world,life,family,and the future.Every time I go to the forest,I love to stay there for a long time because I can have a very goodrest.What a good time!There are trees,flowers,birds and animals.I can smell the air and I can feel the wind I often look up at the sky.It is always blue and the clouds move slowly and often change their shapes.Some look like birds,others look like animals.The only thing I don't like in the forest is the mosquitoes.I enjoy the time in the forest.When I go to other cities,I always go to the forest there to enjoy it.1.Why is the forest the writer's favourite place?A.It is nearby his house.B.He can see many animalsC.He can catch many birds.D.He enjoys things in nature2.From the passage,we can know the writer.A.enjoys drawing picturesB.loves noisy environmentC.likes living in the forestD.misses IUN family very much3.What docs the underlined word"shapes"mean?A.气味B.色调C.形状D.方向4.Which of the following is WRONG according to the passage?A.The writer likes to stay in the forest for a long lime.B.The writer can have a very good rest in the forest.C.The writer likes the air,the clouds and the mosquitoes.D.The writer sometimes goes to other cities’ forests too.21.Hobbies﹣Find Yourself a New Hobby Today!I don't know about you,but I love hobbies.I started my hobbies from NotSoBoringLife.com.I thinkthe best way to find a new hobby is to see our Hobbies page.There I have more than 50popular hobbies:Reading,Watching TV,Family Time,Going to Movies,Fishing,Computer,Walking,Exercise,Listening to Music,Team Sports,Travelling and so on.You'll find the 50different hobbies and a short guide for you:what to expect and where to start.Then,in the 50most popular hobbies,how many hobbies do you have?Maybe you know hobbies take time.Most Americans spend 50hours on work.They only leave about 20hours a week for a hobby.With only 20hours,they choose popular hobbies they can do well.For example,they could drive the family and take them for camping.There they could swim,fish,read stories,go hunting for dinner,cook up their fresh food,and take a quick hike before it gets to dark.There they could play some music and get some much needed sleep.If so,they have 20% of the 50most popular hobbies all in one weekend!Come and join us and I hope you can find a new hobby for yourself today!1.Where did the writer begin his hobbies?A.From NotSoBoringLife.com.B.From his new hobbies today,C.From the hobby of reading.D.From the hobby of computer2.About the Hobbies page,the following are right EXCEPT thatA.it has a short guide for youB.it offers over 50popular hobbiesC.it can tell you how to start hobbiesD.it knows how many hobbies you have3.How many hours do most Americans spend their time on work a week?A.20.B.40.C.50.D.80.4.Why does the writer write the passage?A.To tell you how Americans live their life.B.To ask you find a new hobby for yourself now.C.To show how Americans spend their weekends.D.To talk about most Americans’ family camping.四、语法填空,阅读下面短文,用所给单词的适当形式填空,未提供单词的限填一词,将答案写在答题卷上.22.In the long history of China,the Tang Dynasty (618﹣907)is famous for(1)(it)poems.People often say,"If you can read the Three Hundred Tang Poems over(2)over again,you will be able(3)(repeat)some of them at least,though you can't write one."Wang Wei was one of the greatest poets of that time.He was born in 699 and(4)(die)in 759.Wang Wei showed his cleverness(5)he was a small child.When he grew older,he(6)(begin)to learn poems and painting.As a smart boy,he became good (7)them in a short time.Later,he became one of the best poets and painters of his time.A ll his life,he(8)(write)many poems.Today,we still can enjoy about four hundred of them.He was also(9)well﹣known painter of nature.When you read his poems,you can imagine a painting in them.When you watch his(10)(painting),you can feel a poem withinthem.五、书面表达。

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沪教版2019-2020学年七年级下学期期末教学质量测查试卷(I)卷一、听句子,选出与所听句子内容意思相符合的图片。

(共1题;共2分)1. (2分)Where is the man going?A . To the cinema.B . To the library.C . To the museum.二、听句子,选择恰当的答语。

(共5题;共14分)2. (6分)听第二段对话,回答题。

(1)How long will Bill be away from school?A . For a day.B . For 2 days.C . For 3 days.(2)What's the matter with Bill?A . He has a bad cold.B . He has a headache.C . He has a fever.(3)Who took Bill to hospital?A . His father.B . His mother.C . His sister.3. (2分)What does the woman say about the dog?A . It may bite.B . It may bark.C . It may follow people.4. (2分)听句子,选出与所听句子内容相符的正确答语()A . They're white.B . They're mine.C . I like white.5. (2分)选择恰当的应答语()A . I'm going to Tokyo.B . I'm from Tokyo.C . Go down this street and turn left.6. (2分)听句子,选出与所听句子内容相符的正确答语()A . I'm 12.B . It's 8216-5347.C . I'm in Grade 7.三、听对话,选择最佳答案。

(共2题;共11分)7. (6分)听对话,回答小题。

(1)How was Daming's first school?A . Beautiful.B . Big.C . Clean.(2)What was Miss Zhang like?A . Young and beautiful.B . Strict and beautiful.C . Young and friendly.(3)How many friends did Daming have at the school?A . Four.B . Two.C . Three.8. (5分)听一段对话,填入所缺的单词。

9. (2分)选择最佳应答语()A . They're ten yuan.B . They're ten kilos.C . They're fresh.五、单项选择 (共15题;共30分)10. (2分)—I want to visit the Great Wall tomorrow.—_______A . Be back soon.B . Have a good time.C . You're welcome.D . Let's go!11. (2分)I've had ______ bad cold, so I don't think I can go to ______ school today.A . a; /B . / ; theC . /; /D . a ; the12. (2分)- The green coat looks good __________ you.- Thank you.A . onB . inC . withD . at13. (2分)Don't go near the building. It might .A . bring outB . fall downC . dress up14. (2分)You are tired, so you ________ go to the party.A . shallB . needC . shouldn'tD . aren't15. (2分)—_________ is it from your school to the bus stop?—It's ten minutes on foot.A . How soonB . How longC . How oftenD . How far16. (2分)---Excuse me, ______ can I get to the bank?---Sorry, I'm new here.A . whereB . howC . when17. (2分)—May I use your phone? Mine doesn't work.—Of course.________.A . Very wellB . Take it easyC . Here you areD . Thank you18. (2分)The film is ____and we will be _____in it.A . interested, interestB . interesting, interestC . interested, interestedD . interesting, interested19. (2分)In fact, Liu Tu's parents have nothing against .B . to runC . runsD . running20. (2分)It's my honor ______ to give a talk here.A . to inviteB . invitingC . to be invitedD . invite21. (2分)Please check your paper to there are no mistakes.A . think ofB . try outC . find outD . make sure22. (2分)A: do you know in our class?B: Mina.A . Else whoB . what elseC . who else23. (2分)—Will there be fewer trees?—__________.A . Yes,there will.B . Yes,they will.C . No,there aren't.D . No,they won't.24. (2分)— Could you carry that heavy box for me?— ________. I'm strong enough.A . Not at allB . No problemC . Good ideaD . Never mind六、补全对话 (共1题;共5分)25. (5分)阅读下面的对话,根据上下文,从方框内选择恰当的选项补全对话,使对话完整、符合逻辑。

(其中有两项为多余选项)A: Hello, Judy.B: Hi. SteveA: Are you free this Sunday?B: ________ I just do some washing. What about you?A: I hear there are some new animals in Wuquan Zoo. Do you want to go with me?B: ________When shall we meet?A: ________B: Where shall we meet then?A: At the gate of Wuquan Park.B: ________A: It's not far from your home. You can take No 8 bus.B: OK. See you tomorrow.A:________A: Let's make it at 8:00 in the morning.B: I often watch English movies.C: How can I get there?D: I will call you tomorrow morning.E: See you then.F: Not much.G: Sounds interesting.七、完形填空 (共1题;共10分)26. (10分)阅读下面短文,从短文后所给的A、B、C三个选项中选出能填人相应空白处的最佳选项。

I have a good friend from Australia. Her name is Laura. Here is a photo of her family.There is a nice girl and a 1 boy in the photo. The boy is herbrother David. Laura is thirteen 2 David is ten. 3 do they look like? Laura is not fat and she is not 4 either. She is of medium build. She has a round 5 and it is like an apple. Her mouth is small, but her eyes are big. Her hair is 6 and blonde. Laura likes purple and she is often in purple clothes. She7 being a singer. What about David? He is a little thin. David doesn't like 8. His favourite colour is green. David wants to be an actor. They like 9 films very much. They often go to the cinema when they are free. It's relaxing for 10to see a film. You can also see a black dog in the photo. It's their pet dog Cici.(1)A . quietB . busyC . handsome(2)A . andB . becauseC . or(3)A . WhoB . WhatC . How(4)A . shortB . fatC . thin(5)A . faceB . noseC . leg(6)A . warmB . thinC . long(7)A . asks forB . helps withC . dreams of(8)A . blueB . yellowC . purple(9)A . makingB . watchingC . describing(10)A . themB . himC . her八、阅读理解 (共3题;共24分)27. (8分) After death, John went to see God. God looked at him, feeling very unhappy, “You've lived in this world for 60 years. Why haven't you gotten any result at all?” God asked.John argued, “My God, I couldn't become a successful person just because you didn't give me any chance. If you let that magic apple hit on my head, the man who found the law of gravity should be me.”God said, “OK, we might as well try again.”God rocked his hands and the time turned back to a few hundred years ago.God shook the apple tree for the first time, when a red apple fell and happened to drop on John's head. John picked up the apple, wiped it and ate it up as soon as possible.God allowed another bigger apple drop on John's head and John ate it up once again.God shook the apple tree for the third time, when a much bigger apple fell on John’s he ad. John got mad, picked up the apple, threw it out heavily. Then he shouted angrily: “The apple annoyed my sweet dream! What a bad luck!”The apple flew out and happened to fall on Newton's head. Newton awoke and picked up the apple. After a long time of thinking, he discovered the law of gravity at last.The time returned once again now.God said to John, “John, do you understand it now?”John asked, “My God, please give me another chance…I will …”God shook his head and said, “No. The chance that the app le drops on the head of everyone is the same, but each person's ability to catch the chance is different.”(1)When did John die?A . At the age of 50B . At the age of 60.C . At the age of 70.D . At the age of 80.(2)How many times was John hit by apples?A . OnceB . TwiceC . Three timesD . Four times(3)What did John do after he was hit by the apple for the second time?A . He ate the apple at once.B . He got angry and shouted.C . He threw the apple out.D . He thought something over.(4)Which is the best title of the passage?A . God's WordsB . Annoying ApplesC . John's LifeD . Lost Chances28. (6分)(1)You can call Zhang Ying if you want to _____________________.A . buy a bikeB . sell a bikeC . have your bike repairedD . borrow a bike(2)One of the reasons why Li wants someone to share his room is that______________.A . he wants to live near the campusB . he wants to improve his EnglishC . he wants his washer, dryer and kitchen to be usedD . he wants someone to use his kitchen(3)Joseph Hofman_________________.A . found John Smith’s briefcaseB . was a teacherC . found the briefcase with many booksD . found the brown briefcase with some money29. (10分) Let me tell you my penfriend Ivan. He is 12 years old. He likes playing football. He usually plays football with his friends at weekends.Ivan lives with his father and mother in a city in France. They have a home with five rooms, a swimming pool and a garden. They often have a party in the garden at weekends. They like to help their neighbours. His home is not near his school, so Ivan takes a bus for an hour and then walks for 10 minutes to school. There is a Basketball Club near his school. He likes playing basketball in the club.Ivan's father is a worker. He is busy. Ivan’s mother is a doctor. She is nice to the patients. Ivan wants to be a teacher when he grows up.1 want to be a teacher, too. Every month Ivan writes two lett ers to me. He’ll come to China next year. We’ll meet then.(1)How old is Ivan now?A . He is 11.B . He is 12.C . He is 13.D . He is 14.(2)What are Ivan’s hobbies?A . Basketball and swimming.B . Football and basketball.C . Football and swimming.D . Reading and swimming.(3)How often does Ivan write to me?A . Twice a month.B . Twice a week.C . Every day.D . Every week.(4)Ivan studies in ________ now.A . AmericaB . ChinaC . FranceD . Japan(5)Which is the best title(标题)for the passage?A . How To Make PenfriendsB . Something About IvanC . What Is Ivan’s Home LikeD . Ivan’s School Life九、单词拼写 (共1题;共1分)30. (1分)一What do you want for lunch?一Some bread and________(牛肉).十、词型转换 (共1题;共5分)31. (5分)B)根据句子意思,用括号中所给词的适当形式填空。

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