問題詳情
8.阿寬無意間發現爸爸的高中數學筆記本，在這本被白蟻蛀得很厲害的筆記本中，阿寬看到一個題目：二次函數 y=-x2+ Θx+Θ 的圖形與 x 軸交於a( Θ，0) B( Θ ，0) 兩點，且其頂點為C (Θ，5)……上列敘述中 “Θ ”表示被白蟻蛀掉的部分。在這個題目中，可以算出 
=______________ 。(提示：若α, β 為 ax2+bx+c=0的兩根，則 
=______________ 。(提示：若α, β 為 ax2+bx+c=0的兩根，則
參考答案
答案：C
難度：適中0.67406
統計：A(148),B(566),C(1793),D(152),E(1) #
個人：尚未作答書單：國光體育獎章分為三等九級
內容推薦
- 【題組】在聖誕派對上，Clinton先生以和他的夫人共舞做為結束。Mr. Clinton ___________ ___________ ___________ with his wife at
- ( )A: Jimmy seems still angry at me. He doesn’t talk to me at all.B: Maybe he is too busy.A: ____
- ( )Our boss decided to give Ben a pay raise because he did a ______ job of promoting the new book.
- ( ) Overweight, we are advised to pay close attention to our daily diet.(A)related (B)liked (C)t
- ( )Sometimes boys may feel as sad as girls, ______ they just don’t cry like girls do.(A)and(B)or(
- 【題組】Dora不能如她所願地擺動她的手和腳。Dora cannot move her arms and legs ___________ she wants.
- ( )Andy: I think girls really like to spend money on clothes!Grace: Yes, it’s true, ______.Andy:
- ( )My little sister kept crying for thirty minutes. It really ______.(A)drove me crazy(B)made it i
- ( ) The police will _______ the robbery soon.(A)look into (B)look like (C)look forward (D)look d
- ( )Where are you ______, Japan or Taiwan?(A)come from(B)came from(C)to come from(D)from
內容推薦
- ( )Betty: ______Luke: Sounds good. Thanks.(A)What can I do for you?(B)How about having a cup of t
- 1 對於反光物體而言，在火場中「煙霧消光係數 K」與「火場能見度 S」之乘積關係式為？(A)K S=1 (B)KS=3 (C)KS=8 (D)KS=10
- ( )It is lucky ______ me to live a life without worries.(A)in(B)for(C)with(D)about
- ( ) Some scientists think that the hot weather makes the snow melt faster. _______ believe fores
- ( )By reading English novels, my English is ______ getting better day by day.(A)gradually(B)immedi
- 四、克漏字選擇 (共 20 分，每題 2 分) A girl says boys are very different __(26)__ girls. Boys don’t want others
- 設△ABC是一個面積為5的直角三角形，∠B=90°，D、E分別在 上且 求DE之最小值為何？(A)20/7(B)12/7(C)16/7(D)18/7
- ( )I played online games with Peter yesterday, and we ______.(A)were funny(B)had much fun(C)were
- ( ) Some councilors suggested that the public _______ the vouchers to charity.(A)donating (B)to
- ( )Joan sometimes shares her ______ of her school life with me by e-mail.(A)ups and downs(B)to and
- 【題組】27 ( ) (A) feelings(B) felt(C) feels(D) feel
- 如右圖所示，以一細繩將球體懸掛於光滑牆面上，繩很輕，若球的大小與質量改變，當繩長 減少時，繩的張力T與牆所受之正向力N的變化為何？ (A) T 變大，N 變小 (B) T 變小，N 變大 (C)
- ( )My brother told me ______ he has gotten a girlfriend.(A)what(B)which(C)who(D)that
- ( ) A: How are the things with you? B: __________.A: Really? What’s wrong?(A)I do things well. (
- ( )Brian is a ______ man. He makes all his guests feel like home.(A)delicious(B)ridiculous(C)usef
- Jim was punished by his mother for being ________ to his grandfather.(A) polite (B) rude (C) soci
- 8•如附圖所示，小明手持米尺，使米尺下端零點位於小華拇指與食指之間。止華一看 到小明鬆手，就立即抓握米尺，結果米尺落下20公分。若重力加速度爲10 m/s2，則小華的反應時間約爲多少秒 ? (A) 0
- ( )Thank you for sharing the joke ______ me. It is really good.(A)from(B)by(C)to(D)with
- 二、文法選擇(共 20 分，每題 2 分)( )The cake is homemade and tastes ______. You should try it.(A)well(B)great
- My sister and her boyfriend are busy making ________ for their wedding next month.(A) arrangement
- ( )______ is fun to make new friends online.(A)This(B)That(C)It(D)What
- 【題組】28 ( ) (A) tease(B) shout(C) reveal(D) laugh
- You should learn to ________ to high school life so that you will be happier at school.(A) disgus
- 【題組】33 ( ) (A) feeling free(B) feeling freely(C) feel free(D) feel freely
- 【題組】29 ( ) (A) figure out(B) interest in(C) go on(D) hear from