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科目: 來源: 題型:

(本題8分)已知二次函數(shù)y=-x2bx+c的圖象經(jīng)過A(2,0),B(0,-6)兩點.
  (1)求這個二次函數(shù)的解析式;
  (2)設該二次函數(shù)圖象的對稱軸與x軸交于點C,連接BA、BC,求△ABC的面積和周長.

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(本題8分)將二次函數(shù)y=2x2-8x-5的圖象沿它的對稱軸所在直線向上平移,得到一條新的拋物線,這條新的拋物線與直線y=kx+1有一個交點為(3,4).
 求:(1)新拋物線的解析式及后的值;
  (2)新拋物線與y=kx+1的另一個交點的坐標.

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(本題9分)已知△ABC的兩邊AB、AC的長是關于x的一元二次方程x2-(2k+3)x+k2+3k+2=0的兩個實數(shù)根,第三邊BC的長為5,試問:k取何值時,△ABC是以BC為斜邊的直角三角形?

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科目: 來源: 題型:

使有意義的x的取值范圍是(   )
A.x>1B.x≥1C.x≠1D.x≥0且x≠1

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科目: 來源: 題型:閱讀理解

Our thoughts, words, and actions often cause harm to others and to us. Without reconciliation (和解), we cannot deepen our understanding and only cause more suffering. "Beginning Anew" is a(n)   1  of reconciliation. It involves three steps —— sharing appreciation, expressing   2  , and expressing hurt and difficulties.
In the first step, we share appreciation. We acknowledge the   3  qualities of the other person. The second step——expressing regret, is to  4 with the other person our regrets for the things we have done or said that might have caused him or her  5 . This requires humility (謙遜), and the   6  to let go of our own pride. In the third step, we express our own hurt with mindful and loving   7  without blaming or criticizing. We speak in such a way that the other person can listen and   8 our words. If we blame the other person, his heart will   9   and he will not be able to hear us. We ask the other person to help us to understand why he has spoken and acted as he has, causing us so much pain. Perhaps, later, he can share his feelings so that we can understand him more deeply. If a strong   10  arises in us while we are expressing our suffering, we should simply   11  and come back to our breathing until the emotion becomes   12 . The other person can   13  us by following his breathing until we are ready to continue. We can enjoy practicing "Beginning Anew" with our partner, our family, or our friends   14 . By doing this, we will   15  misunderstandings from accumulating. Rather, we will take care of them as they arise, as we take care of our children.
1.
A.
method
B.
practice
C.
example
D.
experience
2.
A.
concern
B.
belief
C.
regret
D.
sympathy
3.
A.
positive
B.
poor
C.
confident
D.
selfish
4.
A.
chat
B.
compare
C.
debate
D.
share
5.
A.
pain
B.
anxiety
C.
confusion
D.
loss
6.
A.
willingness
B.
kindness
C.
happiness
D.
weakness
7.
A.
speech
B.
letter
C.
story
D.
question
8.
A.
choose
B.
accept
C.
spread
D.
change
9.
A.
open
B.
close
C.
beat
D.
melt
10.
A.
emotion
B.
responsibility
C.
value
D.
interest
11.
A.
continue
B.
stop
C.
leave
D.
repeat
12.
A.
quieter
B.
warmer
C.
deeper
D.
stronger
13.
A.
forget
B.
support
C.
hate
D.
remember
14.
A.
quickly
B.
carefully
C.
regularly
D.
willingly
15.
A.
prevent
B.
protect
C.
separate
D.
forbid
 

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直線軸、軸分別交于、兩點,把△繞點順時針
旋轉(zhuǎn)90°后得到△,則點的坐標是(     )
A.(3,4)B.(4,5)C.(7,4)D.(7,3)

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科目: 來源: 題型:

的內(nèi)接三角形,             
的內(nèi)接正方形的面積為(   )
A.2B.4C.8D.16

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科目: 來源: 題型:

AB的直徑,點C、D上,,
,則(   )
A.70°B.60°C.50°D.40°

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如圖,圓弧形橋拱的跨度AB=12米,拱高CD=4米,
則拱橋的半徑為(  )
A.6.5米B.9米C.13米D.15米

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某商場根據(jù)市場銷售變化,將A商品連續(xù)兩次提價20%,同時將B商品連續(xù)兩次降價20%,結(jié)果都以每件23.04元出售,此時商場若同時售出A、B兩商品各一件的盈虧情況為(   ).
A.不虧不盈   B.盈6.12元    C.虧6.02元    D.虧5.92元

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