1.选择题- (共9题)
3.公元263年左右，我国数学家刘徽发现当圆内接正多边形的边数无限增加时，多边形面积可无限逼近圆的面积，并创立了“割圆术”．利用“割圆术”刘徽得到了圆周率精确到小数点后两位的近似值3.14，这就是著名的“徽率”．如图是利用刘徽的“割圆术”思想设计的一个程序框图，则输出n的值为（ ）
（参考数据： {#mathml#}{#/mathml#} ≈1.732，sin15°≈0.2588，sin7.5°≈0.1305）
9.已知定直线l：y=x+3，定点A（2，1），以坐标轴为对称轴的椭圆C过点A且与l相切．
（Ⅰ）求椭圆的标准方程；
（Ⅱ）椭圆的弦AP，AQ的中点分别为M，N，若MN平行于l，则OM，ON斜率之和是否为定值？若是定值，请求出该定值；若不是定值请说明理由．
2.单项选择- (共10题)
10.
— I didn’t care about what other people thought about me.
— Well, you ________.
— Well, you ________.
| A．should | B．ought to have | C．would have | D．could |
11.
---Mr. Wu, can I have a look at the scores?
---Well, you are a senior, so I_____ hardly remind you that the scores are not open to students.
---Well, you are a senior, so I_____ hardly remind you that the scores are not open to students.
| A．can | B．need | C．will | D．shall |
12.
____the problem, it follows that we must develop a plan of action.
| A．Recognizing | B．Having recognized | C．Recognized | D．Having recognizing |
13.
I witnessed the gate of the bank _______ open and many men entering it, but I couldn’t make them out in the darkness.
| A．force | B．be forced | C．forcing | D．being forced |
14.
As a result of __ is now known in physics and chemistry, scientists have been able to make important discoveries in biology and medicine.
| A．it | B．what | C．which | D．that |
15.
US Apple decided to expand its business in China in response to an increasing demand ______ digital product.
| A．of | B．from | C．to | D．for |
16.
Russia's cutting off the gas supply raised a major concern to the European Union, a number of member states are increasingly dependent on one single supplier.
| A．whose | B．that |
| C．where | D．which |
17.
___ great the demand to succeed, one should never abandon his moral and social consciousness.
| A．Now that | B．As if | C．Although | D．However |
18.
Mo Yan, a Nobel Prize winner in Literature, grew up listening to folk tales that __ for centuries in his hometown.
| A．have been told | B．had been told | C．were told | D．have told |
试卷分析
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【1】题量占比
选择题:(9道)
单项选择:(10道)
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【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：10
7星难题：0
8星难题：0
9星难题：0