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科目: 来源: 题型:

(本题8分)已知二次函数y=-x2bx+c的图象经过A(2,0),B(0,-6)两点.
  (1)求这个二次函数的解析式;
  (2)设该二次函数图象的对称轴与x轴交于点C,连接BA、BC,求△ABC的面积和周长.

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(本题8分)将二次函数y=2x2-8x-5的图象沿它的对称轴所在直线向上平移,得到一条新的抛物线,这条新的抛物线与直线y=kx+1有一个交点为(3,4).
 求:(1)新抛物线的解析式及后的值;
  (2)新抛物线与y=kx+1的另一个交点的坐标.

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(本题9分)已知△ABC的两边AB、AC的长是关于x的一元二次方程x2-(2k+3)x+k2+3k+2=0的两个实数根,第三边BC的长为5,试问:k取何值时,△ABC是以BC为斜边的直角三角形?

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使有意义的x的取值范围是(   )
A.x>1B.x≥1C.x≠1D.x≥0且x≠1

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科目: 来源: 题型:阅读理解

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 (谦逊), 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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直线轴、轴分别交于两点,把△绕点顺时针
旋转90°后得到△,则点的坐标是(     )
A.(3,4)B.(4,5)C.(7,4)D.(7,3)

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科目: 来源: 题型:

的内接三角形,             
的内接正方形的面积为(   )
A.2B.4C.8D.16

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AB的直径,点CD上,
,则(   )
A.70°B.60°C.50°D.40°

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如图,圆弧形桥拱的跨度AB=12米,拱高CD=4米,
则拱桥的半径为(  )
A.6.5米B.9米C.13米D.15米

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某商场根据市场销售变化,将A商品连续两次提价20%,同时将B商品连续两次降价20%,结果都以每件23.04元出售,此时商场若同时售出AB两商品各一件的盈亏情况为(   ).
A.不亏不盈   B.盈6.12元    C.亏6.02元    D.亏5.92元

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