[八年级下册数学几何矩形题]1、ABCD是菱形所以AC垂直且平分于BD，所以OD=4,OC=3，所以CD=5 因为OE垂直于CD，且公用内角OCD，所以三角形COE相似于三角形OCD OD:CD=4:5 OC:CD=3:5 且OC=3 所以CE=9\5 2、AB=1,BC=...+阅读
一，
at no longer of for well
as instead once as look
二，不懂
三，
1.We'd really like to __ go___ to Century Park today,but ie's raining.
We ___hope to go ____ to Century Park today,but now we can't.
2.The taxi driver didn't __stop__ at the red light.
The taxi driver __________ at the red light.
3.The manager said,'We can't __hold__ the party in our restaurant.'
The manager did not _________ the party in their restaurant.
4.I workd hard to __solve__ the problem,but I'm not sure if my answer is correct.
I __________ the problem.
5.They hope they will __have__ a happy new year.
They __________ a happy new year.
6.The teachers let their students _do_ their homework by themselves.
The teachers ______ their students _____ their homework by themselves.
7.Mary won't forget to __send__ Lucy a birthday card.
Mary will __________ Lucy a birthday card.
8.Eva said she would like to __take__ evening classes in English.
Eva said she __________evening classes in English.
以下为关联文档：
八年级数学矩形题在矩形ABCD中 角A=角D=90度 因为 角FEC=90度，所以 角AEF+角DEC=90 在三角形ECD中，角DCE+角DEC=90度 所以 角AEF=角DCE 因为 EF=EC ， 角A=角D ， 角AEF=角DCE 所以 三角形AEF 全等...
八年级物理题声现象我能做多少算多少，你不要责怪我哦！！！ 1。利用回音测定海底的深度，但需测出（声音往返）所用的时间t，然后利用公式（S=Vt/2）来计算海水的深度 2.渔民可以利用电子发生器把鱼吸引到网里，说明...
英语专八改错技巧专八改错题的技巧有哪些不得不说专八改错还是比较变态的，变不变态你得看真题好么，其他的统统不要看，都不靠谱！ 实际上专八的改错就是抽一段文章，这文章的题材就非常抽象，基本都是有关语言学和英语语言学...
帮帮忙吧急需一篇英语对话以怎样适应宿舍生活为主题五六分钟八1.A: Hi Lauren!B: Hey Ms.Fingerhut!A: Are you studying in the library?B: Actually I am, and for the upcoming english quiz.A: I am happy to hear that, you are a...
八年级上英语题1.She likes cleaning the bike (because she can be outside).划线部分提问 ( Why does)she (like to )clean the bike? 2.情景交际 A:Hi,Tom!Did you make a New Year's r...
请帮忙找苏教版八年级下学期数学计算题100道以上谢谢请快因式分解1) X^2-X-6=0 2) 2X^2-3X-2=0 3) -3X^2+6X=2 4) 4X^2-4X+1=0 5) X^2-2X+3=0 6) -X^2-2X+8=0 7) X^2-X-2=4 8) 2X^2-3X+1=0 9) -3X^2+4X+4=0 10) 4X^2-11X-3=3 11) x...
几道八年级数学几何证明题1.将三角形ACD沿AD向右翻折，交BD于E，角C等于角AED等于2角B，所以AE等于BE等于AC，又CD等于DE，所以DE+BE等于BD，所以AC+CD=BD。 2. (1)连接AP，三角形ABP面积加三角形ACP面积等于三角形...
帮忙翻译一些八年级英语短语1 - don't let... enter 2 - with someone quarrel 3 - give someone a letter 4 - call.. 5 - a a ticket to the football match 6 - use telephone conversation 7 - to...
八年级上人教版物理题1、人在打喷嚏时注意力不能集中，汽车司机在行车时打喷嚏容易发生交通事故，设某司机打一个喷嚏的时间为1.5s，车的行车速度为72km/h，若在行车时突然打喷嚏在此时间内汽车行驶的路...
