1 . 在
和
中,
.如图1,点
与点
重合,点
在边
上.如图2,将
绕点
顺时针旋转
,边
与边
分别交于点
时,连接
.下列4个以下结论:
①
;
②当
时,
;
③当
时,
;
④当
时,
为定值.
其中正确的是__________ .(写出所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a54b0fcd887c1460f004a91ef0ba02f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67e19e9f85eea90e8c00637b4d2a383f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9506adf67d4563138dfeb21365b1ba22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/2/ec97175d-b363-4cd8-9660-06922c81b317.png?resizew=260)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d9e7ef53045ebea91d4e9305c12ce5.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c96cb3ac8290e09c55d4eb336a8608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ded6b9765351ceb0df3e671dfa6d205.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa30a9ee227af2b387cf6e028c20d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec9f2254db4904e59e76a2bd5dbcf18b.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b76ee688fc482cf94d8dca8f9f70f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a971dd843f2bf17dfc0c0c6c3a4a36.png)
其中正确的是
您最近一年使用:0次
2 . 如图,在菱形
中,
,
,点
为对角线
上一动点(不与点
重合),且
,连接
交
延长线于点
.
①
:
②当
为直角三角时,
;
③当
为等腰三角形时,
或者
;
④连接
,当
时,
平分
.
以上结论正确的是________ .(填正确的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cbbc26a6f4e97047943f9acf03a26e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/197afe2823d441bd68ed89a9d393fb29.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60634341a9603e24b2bbc6960abe3d31.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c11bca40fcddfc1afbd7c742ca0000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587547b09e85c4779ae0e341bce4c968.png)
④连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a702c324e0c76150540c3d32df802077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36719f1e764ee0e719b65c49fae84677.png)
以上结论正确的是
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/13/d7f13b16-0ef8-4fae-904d-d85cce5ebb75.png?resizew=172)
您最近一年使用:0次
3 . 如图,将
绕点
顺时针旋转
得到
,边
,
相交于点
,连接
.下列结论:①
;②
平分
;③
;④
.其中所有正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce74654b7088989396bb03fb619b0428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd94dd51562ecbee6edd4265326b765.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5588b9238d940f09fd25191b930ce936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/817ccf96200350828be4a7a503a5ad02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/3e787b10-14f4-45be-b889-77c046a064f7.png?resizew=229)
您最近一年使用:0次
2022-12-09更新
|
132次组卷
|
4卷引用: 福建省福州市长乐区2022-2023学年九年级上学期期中数学试卷
福建省福州市长乐区2022-2023学年九年级上学期期中数学试卷福建省福州市第十五中学2023-2024学年九年级上学期月考数学试题(已下线)专题23.13 旋转(全章分层练习)(提升练)-2023-2024学年九年级数学上册基础知识专项突破讲与练(人教版)(已下线)专题3.6 图形的旋转(分层练习)(基础练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(北师大版)
4 . 如图,在
中,
,将
绕点
顺时针旋转得到
点
的对应点为
,点
的对应点
落在线段
上,连接BE.下列结论:①
平分
;②
;③
;④
.其中所有正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cda6381d959e6f99f3100d7137c45c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23dc2d2dd56fcc67698c45a6e0e48f80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61fe2791ff441916982c0d46eaa3b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7754def2a1547a806957f3bc06c2097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5adc18ca424552b35ab939e9d57943e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/54dc2e53-616c-4fd1-b144-e656d14a5118.png?resizew=148)
您最近一年使用:0次
2022-12-20更新
|
196次组卷
|
4卷引用:福建省福州市长乐区鹤上中学2022-2023学年九年级上学期期中数学试题
福建省福州市长乐区鹤上中学2022-2023学年九年级上学期期中数学试题北京景山学校大兴实验学校2022-2023年八年级上学期数学期末试卷(已下线)专题23.1 图形的旋转【十大题型】-2023-2024学年九年级数学上册举一反三系列(人教版)(已下线)专题3.2 图形的旋转【十大题型】-2023-2024学年九年级数学上册举一反三系列(浙教版)
名校
5 . 如图,
为
的直径,
,
、
分别交
于点
、
,
于点
,
于点
,
,下列结论:
;
;
;
;
上述结论中正确的是______
填上所有正确结论的序号![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e99cd1610de98c8332da8c4520aad6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8136d1005cee4f37655508ecf0e856a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81e24376a13d648c2ed0dc73bc710e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1af52cb73c4f24422ff5edeae792096e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167a994eda6e1db8bad43b91967e0386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef56afb914cc88d01c8d3b291b17e63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b371a8f2d4951b451ca3ae5495d43afd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad558cea7bfcb44118a409691902c990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a301324443eb93b467134a86890dd9ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/1a9923b8-39ed-4637-aa78-25add6ca5231.png?resizew=137)
您最近一年使用:0次
6 . 如图,△ABC和△DCE都是等边三角形,且点B、C、E在同一直线上,AE与BD、CD分别交于点F、H,AC与BD交于点G,连接CF、GH.则下列结论正确的是 _____ .(写出所有正确结论的序号)
①AE=BD;②GD=HE;③△CGH是等边三角形;④CF平分∠BFE;⑤BF=CF+AF.
①AE=BD;②GD=HE;③△CGH是等边三角形;④CF平分∠BFE;⑤BF=CF+AF.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/25/63aa8f25-7064-4a67-8320-dcba5a3e3d36.png?resizew=234)
您最近一年使用:0次
22-23八年级上·全国·期末
7 . 如图,
中,
,
,D为线段
上一动点(不与点B,C重合),连接
,作
,
交线段
于E.以下四个结论:
①
;
②当D为
中点时,
;
③当
为等腰三角形时,
;
④当
时,
.
其中正确的结论是______ (把你认为正确结论的序号都填上).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854f480c60b88b546cb15d3b5622e212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640e9e7c56e8eeda044fb55396088816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a9608cad892644b4094ed6438b69572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bebd95e4e02ded19f5c0a8de71c27ae7.png)
②当D为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bc5547bb6d2a7a315962ff75f6ba8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115d56f2dca3e53ef6db9761cfef7f6e.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e4dbea6a5faecdd8f6c06cf9fd43a90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
其中正确的结论是
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/56a89dea-6703-43c6-80fd-f2a959fbae70.png?resizew=197)
您最近一年使用:0次
8 . 如图,AB
CD,将一副直角三角板作如下摆放,∠GEF=60°,∠MNP=45°.下列结论:①GE
MP;②∠EFN=135°;③∠BEF=75°;④∠AEG=∠PMN.其中正确的结论有_____ (写出所有正确结论的序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/7f21b5b5-85cb-4604-87a1-fd3d3fe60810.png?resizew=130)
您最近一年使用:0次
2022-08-16更新
|
525次组卷
|
4卷引用:山东省临沂市临沭县2021-2022学年七年级下学期期中数学试题
山东省临沂市临沭县2021-2022学年七年级下学期期中数学试题(已下线)综合复习与测试(3)(第十一十二章)(培优篇)(专项练习)-2022-2023学年八年级数学上册基础知识专项讲练(人教版)上海市民办尚德实验学校2022-2023学年七年级下学期期中数学试题河北省廊坊市固安县第五中学2023-2024学年八年级上学期第一次月考数学试题
9 . 如图,点
在
内部,点
与点
关于
对称,点
与点
关于
对称.甲、乙两位同学各给出了自己的说法:甲:若
,则
是等边三角形;乙:若
,则
.对于两位同学的说法,下列判定正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6131160eaee962470abc7771df265c6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc51601b6c84e2ffade0e91c9feaa970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c84a56823287fa2b878302cff66fcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aefee236ce95b71927b9048409c5c68.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/6/f0e4b685-d0e5-4b79-a272-8a50359cdb32.jpg?resizew=146)
A.甲正确 | B.乙正确 | C.甲、乙都正确 | D.甲、乙都错误 |
您最近一年使用:0次
10 . 如图,直角三角形
中,
,
于点
,
平分
交
于点
,交
于点
,
交
于点
,
于
,以下4个结论:①
;②
是等边三角形;③
;④
中正确的是______ (将正确结论的序号填空)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac4e5834821241bf9752e7986e0defa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bb5ccceb997622add983ee2dc68522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd6fe78f6cfdfefd6d8be45473b25b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6353eb2fa2d6c651f6fd3b44def1c876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb29dc024f8f554eaa879bac345aeb92.png)
![](https://img.xkw.com/dksih/QBM/2021/1/28/2645738145316864/2652445308420096/STEM/fd20b001-cd75-48f5-8f66-7acdf55628d3.png)
您最近一年使用:0次
2021-02-06更新
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986次组卷
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6卷引用:山东省滨州市惠民县2020-2021学年八年级上学期期末数学试题
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