1.选择题- (共4题)
2.二甲醚（CH3OCH3）是一种应用前景广阔的清洁燃料，以CO和H2为原料生产二甲醚主要发生以下三个反应：
编号 | 热化学方程式 |
① | CO（g）+2H2（g）⇌CH3OH（g）△H1=﹣99kJ•mol﹣1 |
② | 2CH3OH（g）⇌CH3OCH3（g）+H2O（g）△H2=﹣24kJ•mol﹣1 |
③ | CO（g）+H2O（g）⇌CO2（g）+H2（g）△H3=﹣41kJ•mol﹣1 |
回答下列问题：
4.向2L密闭容器中通入a mol气体A和b mol气体B，在一定条件下发生反应：xA（g）+yB（g）⇌pC（g）+qD（g）已知：平均反应速率vC= {#mathml#}{#/mathml#} vA；反应2min时，A的浓度减少了 {#mathml#}{#/mathml#} ，B的物质的量减少了 {#mathml#}{#/mathml#} mol，有a mol D生成．
回答下列问题：
2.单项选择- (共6题)
5.
The news inspired the whole world______ Israeli scientists have invented a kind of magic glasses_________ can let the blind see things.
| A．that; what | B．which; that | C．what; that | D．that; which |
6.
As _________ teacher, you must believe that you can make ______ difference to the lives of your students.
| A．a; 不填 | B．a; a | C．不填; 不填 | D．不填; a |
7.
I hope I will not be called on in class as I am not yet ________prepared.
| A．attentively | B．readily | C．actively | D．adequately |
8.
_____ you have offered 50 yuan , you can telephone for 100 yuan.
| A．To provide that | B．Provided that |
| C．Being provided that | D．Provide that |
9.
Wait a moment, please. When I _________ writing the letter, I will go shopping with you.
| A．will have finished | B．have finished |
| C．will finish | D．finished |
试卷分析
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【1】题量占比
选择题:(4道)
单项选择:(6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：6
7星难题：0
8星难题：0
9星难题：0