1.选择题- (共8题)
1.
在伏安法测电阻的实验中，待测电阻Rr的阻值约为200Ω，电压表V的内阻约为2kΩ，电流表A的内阻约为10Ω，测量电路中电流表的连接方式如图（a）所示，结果由公式Rx= 计算得出，式中U与I分别为电压表和电流表的示数，若将图（a）和图（b）中电路测得的电阻值分别记为Rx1和 ，则{#blank#}1{#/blank#}（选填“ ”或“ ”）更接近待测电阻的真实值，且测量值{#blank#}2{#/blank#}（选填“大于”“等于”或“小于”）真实值．
2.
质量为0.1g的小物块带有5×10﹣4C的电荷，放在倾角为30°且足够长的光滑绝缘的斜面上，整个装置放在磁感应强度为0.5T的匀强磁场中，如图所示．物块由静止下滑，滑到某个位置时离开斜面，求：
2.单项选择- (共10题)
9.
Nowadays everything strange is ________ strange. That is to say, any unexpected thing is possible to happen.
| A．something | B．anything |
| C．nothing | D．everything |
10.
When you go outing with your sisters, you must see to ________ that they are safe.
| A．everything | B．it | C．them | D．yourself |
11.
Is _________ 48 hours _________ the man-made satellite _________ is made in our country to orbit the planet around?
| A．it; that; where | B．it; when; that |
| C．it for; that it takes; that | D．it; that it takes; which |
12.
In the face of ______ failure, it is the most important to keep up _____ good state of mind.
| A．/ ; a | B．a; / | C．the; / | D．/; the |
13.
I could have arrived much earlier, but I ____ in the traffic.
| A．would be caught | B．was caught | C．has been caught | D．had been caught |
14.
My grandmother had________ over 50, 000 when she was sixty- five years old.
| A．put away | B．put back | C．put out | D．put down. |
15.
－Derrick, don't you think you should take a vacation? Even one or two days would be fine.
－There's . There's too much work.
－There's . There's too much work.
| A．no problem | B．no way | C．no wonder | D．no need |
16.
A model or an experiment in a science class can help students see things which would ______ remain hidden.
| A．otherwise | B．still |
| C．thus | D．therefore |
17.
These two areas are similar ________ they both have a high rainfall during this season.
| A．to that | B．besides that |
| C．in that | D．except that |
试卷分析
-
【1】题量占比
选择题:(8道)
单项选择:(10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：8
7星难题：0
8星难题：2
9星难题：0