『壹』 2013年金山區數學一模卷(最近剛考完)
(1) 拋物線過A, B, 可表達為y = m(x + 3)(x - 1)
x = 0, y = -3m, D(0, -3m)
(2)拋物線對稱軸 x = (-3+ 1)/2 = -1
x = -1, y = -4m
P(-1, -4m)
C(-1, 0), 圓半徑r = [1 - (-3)]/2 = 2
PD的斜率: (-3m+ 4m)/(0 + 1) = m, 方程: y = mx - 3m, mx - y - 3m = 0
C與PD的距離d = |-m - 0 - 3m|/√(m² + 1) = 4m/√(m² + 1) = 2
相切, d = r, m = √3/3 (捨去m = -√3/3 < 0)
不用點與直線的距離也行。先求出的斜率;然後可以求出過的垂線的斜率;然後通過二者的方程得到交點,以及三邊的長。用勾股定理即可。
(3)
m = 1, P(-1, -4), D(0, -3), B(-3, 0)
BP² = 20
PD² = 2
BD² = 18
BP² = PD² + BD²
BPD為直角三角形, ∠BDP為直角
tan∠BPD = BD/PD = √18/√2 = 3
『貳』 2012金山區英語初三一模答案
如果是下面的三套的答案的話請追50分並採納後發= =最近老有人聲稱會追分結果收了我的郵件後關閉回答,我被弄怕了,抱歉。另,郵箱是[email protected]嗎?有沒有vip什麼的? 【青浦】 1.(2分)③相對性,並非絕對「一刀切」④不對稱的偏正平衡。 【崇明】 1、科技的濫用所造成的重大社會危機;以財富積累為唯一目的的經濟發展模式;貪婪、惰性和懦弱,以及各種各樣的揮霍。(3分)【金山】 1. (2分)喬布斯和他的蘋果都達到了追求的最高點。 wJ俄
『叄』 求2011年金山區高三英語一模試卷和答案
金山
25-29 BDAAB 30-34 DBCAC 35-39 BADAD 40 B 41-45 DJAGE 46-49 BFIC
50-64 DABDA BBCDB ABCDC 65-75 DACB ACB CBDB 76-80 DAEFB
81. feelings, will, motivation, interests and habits // the desire to learn, will-power and self-confidence
82. the genetic factors, state of poor nutrition or laziness
83. Students lose self-confidence.
84. Alts (Parents and teachers ) should be teenagers』 best psychologist and fully understand them.
1.He adopts / (has) adopted my advice / suggestion(s) / proposal(s).
2.I appreciated what she had done for me.或 I appreciate what she had done for me.
3.Despite difficulties, we will try hard to complete / achieve / accomplish / fulfill the task.
或 Despite the fact that there are difficulties, we will try to complete / achieve / accomplish / fulfill the task.
4.To meet the needs of the 2010 Shanghai Expo, a lot of modern hotels and exhibition halls have been set up in Shanghai.
『肆』 2013金山區高三英語一模幾道語法題 謝謝!!!
25,We Chinese people 和the people of all countries 分別是一個整體,兩者之間用between.
34,這題考詞語辨析,as far as 是就。。。。。。而言;至於,直到,內遠到
though是盡管容,雖然,不過,然而; unless是除非,如果不,除、、、、、之外
as long as 意為只要,和、、、、一樣長。
35,這里的to have been infected 是不定式表結果,不是介詞。
『伍』 求2015金山區高三英語一模聽力答案,我已經做好了,對一下答案!!
噢 順便提一下,我現在學的ABC天卞英語的助教才和我提過 若想征服英語很簡單的~必須具有好的研習情境及熟練口語對象 重點就是老師教學經驗,口語純正非常重要,保持每天練習口語,1 on 1家教式教學才可以有最.好.的進步效率!學習後同樣要重聽課程錄音音頻,幫助加強記憶!實在是真的無口語交談的人,那麼就去旺旺或大耳朵拿到課余教材學習,多說多問一下子語感會提高起來 學習成效是必定最佳的..金山- BDAAB 0- DBCAC - BADAD 0 B 1- DJAGE - BFIC0- DABDA BBCDB ABCDC - DACB ACB CBDB -0 DAEFB1. feelings, will, motivation, interests and habits the desire to learn, will-power and self-confidence. the genetic factors, state of poor nutrition or laziness. Students lose self-confidence.. Alts (Parents and teachers ) should be teenagers』 best psychologist and fully understand them.1.He adopts (has) adopted my advice suggestion(s) proposal(s). .I appreciated what she had done for me.或 I appreciate what she had done for me..Despite difficulties, we will try hard to complete aceve accomplish fulfill the task. 或 Despite the fact that there are difficulties, we will try to complete aceve accomplish fulfill the task. .To meet the needs of the 010 Shanghai Expo, a lot of modern hotels and exbition halls have been set up in Shanghai.