⑴ （2014徐匯區一模）已知：如圖，△ABC中，點D、E是邊AB上的點，CD平分∠ECB，且BC2=BDBA．（1）求證：
證明：（1）∵BC2=BD?BA，
∴BD：BC=BC：BA，
∵∠B是公回共角，
∴△BCD∽△BAC，
∴∠答BCD=∠A，
∵CD平分∠ECB，
∴∠ECD=∠BCD，
∴∠ECD=∠A，
∵∠EDC=∠CDA，
∴△CED∽△ACD；
（2）∵△BCD∽△BAC，△CED∽△ACD，
∴
| AB |
| BC |
| AC |
| CD |
| CE |
| ED |
| AC |
| CD |
| AB |
| BC |
| CE |
| ED |
⑵ 2012年上海徐匯區初三英語一模首字母填空 答案解析
保證抄准確！
86. children 孩子
87. money 錢
88. own
on one's own 獨自
89. unusual 不尋常的
90. blowing 吹
91. promise 諾言
92. miss 想念
⑶ 我是徐匯區初三的一名學生，想知道一模考排名前10％要多少分
海淀的孩子如果沒加體育475很高了，個人感覺能考個學校，沒必要上私立。如果加了體育分數在內區里容算是中下等，排名大概在8000左右（海淀一摸今年比別的區要難），上國際高中分數應該沒問題，英語加強口語相信也沒什麼問題。 有很多學校招生分計劃內、學校自主招生和國際班，三個不同的分數段，你可以多參考.
聰明在於學習，天才在於積累。
⑷ （2012徐匯區一模）如圖所示的皮帶傳動裝置中，A、B兩輪半徑分別為rA和rB，已知rA＜rB，且皮帶不打滑．
A、輪子邊緣上它點抄，靠傳送帶傳動，兩點它線速度相等，而半徑不等，所以角速度不等．故A錯誤
3、由A分析得，3正確
C、由a=
| v2 |
| r |
⑸ 徐匯區初三英語一模卷2016作文
Last sunday. I and my father, mother, grandparents, brother went to hutiaoxia
by bus. In the morning we came down the mountain. I saw wooded mountains, wild flowers bloom. We climb up the hill along the mountain path. Come halfway up the mountain, I feel a little tired，it began to rain,My West Lake silk umbrella missed,. Dad said to me,「chenlu， don』t do anything halfway.」at last，So I insisted reached the top, the top of the scenery so beautiful.We were flying kites, I was thirsty, my mother bought me a bottle of water, .finally we went home.finally，Since then, I've kept the umbrella。 was very happy
⑹ 徐匯區初三一模英語作文，求修改語法。謝
Everyone has the best thing or person they know. The best thing I know is the piano. Years ago, I learned how to play the piano. I always spent several hours a day thinking of how to play it well for years. At first, I didn』t like it (was not keen on it替代), and even hated it. In my mind, it was (too)boring (to be addicted to it ). With the increase of age, I can play it well (去well為 fluently in confidence). It not only brings me beautiful music, but also lets me know (去know變expirence) 『success belongs to the persevering』. 括弧里改得更好看點...如果字數不夠可以加個總結句.望採納