1.选择题- (共10题)
2.把0.6molX气体和0.4molY气体混合于2L容器中，使它们发生如下反应：3X（气）+Y（气）=nZ（气）+2W（气）．5min末已生成0.2molW，若测知以Z浓度变化来表示的化学反应平均速率为0.01mol•L﹣1•min﹣1，则上述反应中Z气体的计量系数 n的值是（ ）
3.把0.6molX气体和0.4molY气体混合于2L容器中，使它们发生如下反应：3X（气）+Y（气）=nZ（气）+2W（气）．5min末已生成0.2molW，若测知以Z浓度变化来表示的化学反应平均速率为0.01mol•L﹣1•min﹣1，则上述反应中Z气体的计量系数 n的值是（ ）
6.工业上从废铅酸电池的铅膏回收铅的过程中，可用碳酸盐溶液与铅膏（主要成分为PbSO4）发生反应：PbSO4（s）+CO {#mathml#}{#/mathml#} （aq）⇌PbCO3（s）+SO {#mathml#}{#/mathml#} （aq）．Ksp （PbCO3）=1.5×10﹣13，Ksp （PbSO4）=1.8×10﹣8某课题组用PbSO4为原料模拟该过程，探究上述反应的实验条件及固体产物的成分．
10.
已知下列热化学方程式：（1） C（s）+O2（g）=CO（g）△H=△H1；（2）2H2（g）+O2（g）=2H2O（g）△H=△H2；由此可知 C（s）+H2O（g）═CO（g）+H2（g）△H3．则△H3等于（ ）
2.单项选择- (共10题)
11.
---Have you seen ________ toothpaste?
---Isn’t it on ________ sink?
---Isn’t it on ________ sink?
| A．the; a | B．/; the | C．the; the | D．/; a |
12.
The man didn’t admit _________ anything at the store, when he was questioned by the police.
| A．to steal | B．having stolen | C．to have stolen | D．having been stolen |
13.
They spent the afternoon _________ in the street, not knowing what to do.
| A．putting on | B．blocking out | C．holding out | D．fooling around |
14.
We can’t wait. We have to_______ the direction and the distance before we take action.
| A．make out | B．pick out | C．think out | D．turn out. |
15.
I ________ like boiled water, but now I love it.
| A．would | B．used to | C．wouldn’t | D．didn’t use to |
16.
It was difficult being in a foreign country, ________ if you don’t speak the language.
| A．extremely | B．naturally | C．basically | D．especially |
17.
If you say that someone is ________ for a shock or a surprise you mean that they are going to experience it.
| A．out | B．in | C．at | D．on |
18.
We wouldn’t go abroad for our vacation _______ we could afford it.
| A．as if | B．so that | C．in case | D．even though |
19.
-----Who ______ it be that hasn’t handed it in yesterday?
------It _______ be Bob. He handed it in yesterday.
------It _______ be Bob. He handed it in yesterday.
| A．can; mustn’t | B．must; can | C．can; can’t | D．may; mustn’t |
试卷分析
-
【1】题量占比
选择题:(10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：9
5星难题：0
6星难题：1
7星难题：0
8星难题：0
9星难题：0