1.选择题- (共4题)
1.如图是一火警报警电路的示意图。其中R3为用某种材料制成的传感器，这种材料的电阻率随温度的升高而增大。值班室的显示器为电路中的电流表，电源两极之间接一报警器。当传感器R3所在处出现火情时，显示器的电流I、报警器两端的电压U的变化情况是 （ ）
2.如图是一火警报警电路的示意图。其中R3为用某种材料制成的传感器，这种材料的电阻率随温度的升高而增大。值班室的显示器为电路中的电流表，电源两极之间接一报警器。当传感器R3所在处出现火情时，显示器的电流I、报警器两端的电压U的变化情况是 （ ）
3.如图所示，在竖直放置的长直导线右侧有一矩形线框abcd，导线与线框在同一平面内，且线框的ad、bc边与导线平行。导线中通有如图所示的恒定电流。能使线框中产生沿abcda方向的感应电流的是（ ）
2.单项选择- (共5题)
5.
From________seemed to be a great distance，he smiled at her，and she smiled，too．
From________seemed to be a great distance，he smiled at her，and she smiled，too．
| A．it | B．that | C．what | D．which |
6.
—Shall we go out for__________walk?
—Sorry．This is not the right____________to invite me．I am too tired to walk．
—Shall we go out for__________walk?
—Sorry．This is not the right____________to invite me．I am too tired to walk．
| A．a；moment | B．the；situation | C．a：place | D．／：chance |
7.
—Is there anything I can do for you?
—There seems to have been a technical problem—______，that’s what they told me．
—Is there anything I can do for you?
—There seems to have been a technical problem—______，that’s what they told me．
| A．somewhat | B．somehow | C．someway | D．anyway |
8.
How you feel about life and anything________depends on where you focus your attention．
How you feel about life and anything________depends on where you focus your attention．
| A．in advance | B．in short | C．in turn | D．in particular |
试卷分析
-
【1】题量占比
选择题:(4道)
单项选择:(5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：0
7星难题：0
8星难题：5
9星难题：0