1.选择题- (共11题)
2.
如图，抛物线y=ax2+bx+c（a≠0）的对称轴为直线x=1，与x轴的一个交点坐标为（﹣1，0），其部分图象如图所示，下列结论：
①4ac＜b2；
②方程ax2+bx+c=0的两个根是x1=﹣1，x2=3；
③3a+c＞0
④当y＞0时，x的取值范围是﹣1≤x＜3
⑤当x＜0时，y随x增大而增大
其中结论正确的个数是（ ）
3.
如图，抛物线y=ax2+bx+c（a≠0）的对称轴为直线x=1，与x轴的一个交点坐标为（﹣1，0），其部分图象如图所示，下列结论：
①4ac＜b2；
②方程ax2+bx+c=0的两个根是x1=﹣1，x2=3；
③3a+c＞0
④当y＞0时，x的取值范围是﹣1≤x＜3
⑤当x＜0时，y随x增大而增大
其中结论正确的个数是（ ）
4.如图甲是我国古代著名的“赵爽弦图”的示意图，它是由四个全等的直角三角形围成的，若AC=6，BC=5，将四个直角三角形中边长为6的直角边分别向外延长一倍，得到图乙所示的“数学风车”，则这个风车的外围周长是（ ）
10.在平面直角坐标系中，一次函数y=ax+b（a≠0）的图象与反比例函数y= {#mathml#}{#/mathml#} （k≠0）的图象交于第二、第四象限内的A，B两点，与y轴交于C点，过A作AH⊥y轴，垂足为H，AH=4，tan∠AOH= {#mathml#}{#/mathml#} ，点B的坐标为（m，﹣2）．
11.在平面直角坐标系中，一次函数y=ax+b（a≠0）的图象与反比例函数y= {#mathml#}{#/mathml#} （k≠0）的图象交于第二、第四象限内的A，B两点，与y轴交于C点，过A作AH⊥y轴，垂足为H，AH=4，tan∠AOH= {#mathml#}{#/mathml#} ，点B的坐标为（m，﹣2）．
2.单项选择- (共13题)
13.
After decades of effort, the city is still trying to _____ how to stop smoking in public places.
| A．try out | B．let out | C．figure out | D．run out |
14.
When it comes to giving his kids the education they deserve, the 51-year-old father knows he never _______ college without financial aid.
| A．could have attended | B．could attend |
| C．had attended | D．should have attended |
15.
—Do you think the thief entered through the back door?
—No, if he had, I don’t believe he ______ the living-room window.
—No, if he had, I don’t believe he ______ the living-room window.
| A．would break | B．broke | C．would have broken | D．had broken |
16.
Lawmakers have approved the measures_____ protecting the personal information of Web users.
| A．to aim to | B．aiming to | C．aimed at | D．are aimed at |
17.
An unhappy childhood may have some negative effects on a person’s characters; however, they are not always_________,
| A．casual | B．ashamed | C．permanent | D．unfit |
18.
––– Do you think it's a good idea to make friends with your students?
–––________, I do. I think it's a great idea.
–––________, I do. I think it's a great idea.
| A．Generally | B．Eventually | C．Evidently | D．Actually |
19.
My income is rather changeable, but I earn £73 a day ___________.
| A．on the other hand | B．in particular | C．on the whole | D．on average |
20.
Look at the trouble I am in! _______I had followed your advice.
| A．Only if | B．If only | C．Even if | D．So long as |
21.
After the war, a new school building was put up ______there had once been a theatre.
| A．when | B．in which | C．the place where | D．where |
22.
Nobody knows _______broke into the house last night and stole the important papers.
| A．who was it that | B．it was who that | C．who it was that | D．that it was who |
23.
One of the rules is that under no circumstances _______to bring food, drink or chewing gum into the school.
| A．students are allowed | B．allow students |
| C．are students allowed | D．students be allowed |
试卷分析
-
【1】题量占比
选择题:(11道)
单项选择:(13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：0
5星难题：0
6星难题：13
7星难题：0
8星难题：0
9星难题：0