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(2).·∠E=∠ACB,∴.∠1=∠2.…3分.'∠A0E=2∠2，∠DOC=2∠1；.∴∠AOE=∠D0C…4分∴.DC=AE…5分∴.AB2+CD2=AB2+AE2=BE,∴.AB2+CD2=（2R)2=4R2,…6分(3)AB=5-V7.…8分22.解：(1)CC'⊥AB...

周测卷二十一单句填空1.to escape 2.exhibition 3.By 4.salty 5.to 6.a 7.in 8.sculptures 9.warmth 10.eventually阅读本文介绍了有些社区志愿者进行社区服务的...

The maor vens and the smallest organs under skin are individually uniqe and they arevermeter level and even more complex than road systems inbigcityxi...

二邱分语言运用（共两节、满分30分)第一节（共15小题：每小题1分、满分5分）阅读下面短文、从任题所给的A、B、C、D四个选项中选出可以填入空格处的最佳选项。Man...

ENGLS编审Nancy杜长吕夺明总编李若学英语报社粘数辅传媒集团编辑出版全国教辅类级报纸R新课程阅读》ENGLISHE关高三第33期总19074期2022年2月15日星期二eading)网...

The LEGO Group,whose plastic building toys are familiar to many people,has been working onmaking LEGO bricks out of recycled plastic.The bricks aren't...

totally unsure of myself.攻单贝队物的At school,it seemed like the only time anyone talked to me was just to动作jokingly say,You are so quiet.Do you ev...

023牛5月福州市普通高中毕业班质量检测数学试题(完卷时间120分钟：满分150分)友情提示：请将所有答案填写到答题卡上！请不要错位、越界答题！第I卷一选择题：本...

k,0+k22-)-k④代入③得：kR=(1+k22)2-k2)1+k32-k-1(1+k22)2-k2)-2飞-k)+(飞-k)飞2+kk+k)+2kkk-k2)+k飞-k2)3(k2-k22)由0=2++++2无+张2头++23(k,+k2)-66241当且仅当k...

C,地主阶级对农民阶级的残酷剥削和压迫封建礼教和等级森严的封建君主专制制度18全9世纪爽国圈地运动发展至高湖。在政府的直接支持下这一十的李花石动以空前的想...