1.选择题- (共3题)
1.某小组同学按图所示的电路图连接电路，做“探究串联电路的特点”实验．在实验过程中，他们用电流表测出通过A、B、C三处的电流（I总、I1和I2），用电压表测出各个电阻两端的电压和电源两端的总电压（U1、U2和U总），并通过用不同阻值的电阻和改变电源电压的高低，进行多次实验，正确记录测得的实验数据如表所示．
实验序号 | 电流I1 （安） | 电流I2 （安） | 电流I总 （安） | 电压U1 （伏 | 电压U2 （伏 | 电压U总 （伏 | 电阻R1 （欧） | 电阻R2 （欧） | 电阻R总 （伏） |
1 | 0.4 | 0.4 | 0.4 | 2 | 4 | 6 | 5 | 10 | |
2 | 0.3 | 0.3 | 0.3 | 3 | 3 | 6 | 10 | 10 | |
3 | 0.2 | 0.2 | 0.2 | 4 | 2 | 6 | 20 | 10 | |
4 | 0.15 | 0.15 | 0.15 | 3 | 3 | 6 | 20 | 20 | |
5 | 0.1 | 0.1 | 0.1 | 2 | 4 | 6 | 20 | 40 | |
6 | 0.06 | 0.06 | 0.06 | 1.2 | 4.8 | 6 | 20 | 80 |
3.如图所示，一条公路的转弯处是一段圆弧，即图中 {#mathml#}{#/mathml#} ，点O是 {#mathml#}{#/mathml#} 的圆心，CD=600m，E为 {#mathml#}{#/mathml#} 上一点，且OE⊥CD于F，EF=90m，则这段弯路的半径是多少？
2.单项选择- (共12题)
4.
Don’t waste your words. She is as ________ as a mule（骡子) and no one can persuade her.
| A．reliable | B．determined |
| C．stubborn | D．tired |
5.
_______ in thought, I didn’t notice what was happening.
| A．Having buried | B．Burying |
| C．Buried | D．To be buried |
6.
— The problem is very difficult. I'm afraid you can't work it out now.
— I fail this time, I will try it again.
— I fail this time, I will try it again.
| A．Even if | B．Since |
| C．As if | D．Though |
7.
Some friends _______ to Anne’s birthday party this evening so her mother is very busy now.
| A．come | B．are coming |
| C．have come | D．had come |
8.
Lily said that it was because of her strong interest in medicine _____ she chose the course.
| A．how | B．what |
| C．that | D．why |
9.
Finally they arrived at a place _______ sold cigarettes and other small articles.
A. which B. where
C. who D. what
A. which B. where
C. who D. what
10.
I prefer _______ at home rather than _______out.
| A．staying; going | B．to stay; go |
| C．staying; to go | D．to stay; going |
11.
As a young man, there was _______ time _______ I hated to go to school.
| A．a; that | B．a; when |
| C．the; that | D．the; when |
12.
The building windows are bright at night is our school library.
| A．that | B．which |
| C．whose | D．of which |
13.
He asked ______ for the piano.
| A．did I pay how much | B．how much did I pay |
| C．I paid how much | D．how much I paid |
14.
— Students should devote most of their time to studying instead of playing computer games.
—______ No pains, no gains.
—______ No pains, no gains.
| A．No way. | B．Why not? |
| C．Not really. | D．Exactly. |
试卷分析
-
【1】题量占比
选择题:(3道)
单项选择:(12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：11
7星难题：0
8星难题：0
9星难题：1