1.单选题- (共7题)
＞1，则关于
的方程
的根的情况是（ ）
，则根据题意可列方程为（ ）
函数图象形状不相同的函数是（ ）
向右平移1个单位，再向上平移3个单位，得到抛物线的解析式为（ ）
| A．144（1﹣x）2=100 | B．100（1﹣x）2=144 | C．144（1+x）2=100 | D．100（1+x）2=144 |
2.选择题- (共2题)
阅读理解
A man had a little dog, and he liked it a lot. He would pat (拍) its head, put it on his knee and talk to it. Then he would give it some food from his own plate.
A donkey (驴子) looked in through the window and saw the man and the dog.
" Why doesn't he choose me as his pet?" said the donkey. "It is not fair. I work hard, and the dog only shakes its tail, barks and jumps onto the master's (主人) knee. It is not fair. "
Then the donkey said to himself, "If I do what the dog does, the master may choose me as
his pet. "
So the donkey ran into the room. He brayed (嘶叫) at the top of his voice. He shook his tail so hard that he knocked over a jar on the table. Then he tried to jump onto the master's knee.
The master thought the donkey was maniacal , and he shouted, "Help ! Help ! "
Some men came running in with sticks in their hands and they beat the donkey until he ran out of the house.
"I only did what the dog did, " said the donkey, "and yet they still regard the dog as their pet and they beat me with sticks. It is not fair. "
根据短文内容，选择最佳答案，并将其标号填涂在答题卡相应位置。
阅读理解
A man had a little dog, and he liked it a lot. He would pat (拍) its head, put it on his knee and talk to it. Then he would give it some food from his own plate.
A donkey (驴子) looked in through the window and saw the man and the dog.
" Why doesn't he choose me as his pet?" said the donkey. "It is not fair. I work hard, and the dog only shakes its tail, barks and jumps onto the master's (主人) knee. It is not fair. "
Then the donkey said to himself, "If I do what the dog does, the master may choose me as
his pet. "
So the donkey ran into the room. He brayed (嘶叫) at the top of his voice. He shook his tail so hard that he knocked over a jar on the table. Then he tried to jump onto the master's knee.
The master thought the donkey was maniacal , and he shouted, "Help ! Help ! "
Some men came running in with sticks in their hands and they beat the donkey until he ran out of the house.
"I only did what the dog did, " said the donkey, "and yet they still regard the dog as their pet and they beat me with sticks. It is not fair. "
根据短文内容，选择最佳答案，并将其标号填涂在答题卡相应位置。
3.填空题- (共4题)
则
___.
，当
_______时，函数值随x的增大而减小.
的部分图象如图所示，则一元二次方程
的解为：_____.
4.解答题- (共5题)
的一个实数根，求代数式
的值．
（2）
，
是该方程的两个根，记
,S的值能为2吗？若能求出此时k的值.下面的证法供你参考：
把△ACD绕点A顺时针旋转60°得到△ABE，连接ED，则有△ACD≌△ABE，DC=EB，∵AD=AE，∠DAE=60°，
∴△ADE是等边三角形，∴AD=DE．在△DBE中，BD+EB＞DE，即：BD+DC＞AD
实践探索：
（1）请你仿照上面的思路，探索解决下面的问题：
如图3，点D是等腰直角三角形△ABC边上的点（点D不与B、C重合）．求证：BD+DC＞
AD．（2）如果点D运动到等腰直角三角形△ABC外或内时，BD、DC和AD之间又存在怎样的数量关系？直接写出结论．
创新应用：
（3）已知：如图4，等腰△ABC中，AB=AC，且∠BAC=α（α为钝角），D是等腰△ABC外一点，且∠BDC+∠BAC=180°，BD、DC与AD之间存在怎样的数量关系？写出你的猜想，并证明．
-
【1】题量占比
单选题:(7道)
选择题:(2道)
填空题:(4道)
解答题:(5道)
-
【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：2
5星难题：0
6星难题：10
7星难题：0
8星难题：2
9星难题：2