最新初三升高中数学试卷
初三升高一数学测试卷
（满分:100分，时间：90分钟）
一、选择题：本题共8小题，每小题5分，满分40分。 在每小题给出的四个选项中，只有一
个是符合题目要求的。
1、设集合{}{}2,1,0,1,0,2,P Q P Q =--=-?=则（ ）
{}.
2,1,0A -- {}.2,1,0,2B --
{}.2,1,2C -- {}.1,0D - ２．已知集合{}A |14,x Z x +=∈-≤≤则Ａ的真子集的个数为 （ ）
A 、16
B 、15
C 、4
D 、8
３. 已知函数 {}43,0,1,2y x x =+∈，则该函数的值域为（ ）
{}A. 3,11 {} B. 3,7,11 {}C. 3,7 {}D. 7,11 ４. 函数y ＝－x 2＋4x ＋6的最值情况是 （ ）
（A ）有最大值6 （B ）有最小值6
（C ）有最大值10 （D ）有最大值2
５. 函数y ＝－12
(x-1)2＋2的顶点坐标是 （ ） （A ）(1，2) （B ）(1，－2) （C ）(－1，2) （D ）(－1，－2) ６．函数y ＝－x 2＋x －1图象与x 轴的交点个数是 （ ）
（A ）0个 （B ）1个 （C ）2个 （D ）无法确定
７. 若12,x x 是方程22630x x -+=的两个根，则12
11x x +的值为( ) A ．2 B ．2- C ．12 D ．92
8. 下列四个说法：
①方程x 2＋2x －7＝0的两根之和为－2，两根之积为－7；
②方程x 2－2x ＋7＝0的两根之和为－2，两根之积为7；
③方程3 x 2－7＝0的两根之和为0，两根之积为73
-； ④方程3 x 2＋2x ＝0的两根之和为－2，两根之积为0．
其中正确说法的个数是 （ ）
（A ）1个 （B ）2个 （C ）3个 （D ）4个
答案
二、解答题（本题共5小题，每小题4分，共20分）
9、一元二次方程2220x x --=的根是 ；
10、设{}{}||x x =≤=∈≤≤Ａ－１＜ｘ２，Ｂｚ－３ｘ１，则：ＡＢ＝
11、1313
-+＝__ ___； 12、若方程x 2－3x －1＝0的两根分别是x 1和x 2，则
1211x x +＝ ． 13、填空：或用符号?∈
（1） -3 N ； （2）3
1 Q ； （3）3 Q ； （4）π R 。 三、解答题：本题共4小题，每小题各10分。
14. （本小题满分12分）
已知全集I ＝｛０，１，２，４，５，6,７,8,9｝，M ＝｛１，４，６，８，９｝，N ＝｛４，７，９｝，请按要求作答下列各题：
（1） 求M N M N ??和；
（2）求I I C (M N)C (M N)??和
15、分解因式：
（1）x 2＋6x ＋8； （2）8a 3－b 3；
16、(1) 2
20x x +< (2) (9)3(3)x x x +>-
(3) 231x x x -+≥+
17、设Ｕ＝｛２，４，３－a 2｝,Ｐ＝｛２，a 2＋２－a ｝，ＣU Ｐ＝｛－１｝，求a ． 【2017高考阅读理解训练题】
阅读下列短文，从每题所给的四个选项（A 、B 、C 、D ）中，选出最佳选项。
A
I once met a well-known botanist at a dinner party. I had never talked with a botanist before, and I found him fascinating. I sat there absorbed and listened while he spoke of unusual plants and his experiments (he even told me
astonishing facts about the simple potato). I had a small indoor garden of my own ---and he was good enough to tell me how to solve some of my problems.
As I said, we were at a dinner party. There must have been a dozen other guests, but I broke an important rule of politeness. I ignored everyone else and talked for hours to the botanist.
Midnight came, I said good night to everyone and departed. The botanist then turned to our host and said many nice things about me, including that I was a “most interesting conversationalist.”
An interesting conversationalist? I had said hardly anything at all. I couldn’t h ave said anything if I had wanted to without changing the subject, for I didn’t know any more about plants than I knew about sharks. But I had done this one thing: I had listened carefully. I listened because I was really interested. And he
felt it. Naturally that pleased him. That kind of listening is one of the the best ways to show respect to others, and it makes them feel great too. “Few human beings ,” wrote Jack Woodford in Strangers in Love,“can resist the sweet effect of rapt attention.” I went eve n further than that. I was “sincere in my admiration and generous in my praise.”
I told him that I had been hugely entertained and instructed. I had. I told him I wished I had his knowledge.I told him that I should love to wander the fields with him. What’s more, it was all true.
And so I had him thinking of me as a good conversationalist when, in reality, I had been merely a good listener and had encouraged him to talk.
26. From Paragraph 1, we can learn that the writer________.
A. was deeply moved by th e botanist’s talk
B. was amazed by what he was hearing
C. was not in a comfortable situation
D. behaved politely and properly