1.简答题- (共2题)
(1)制取氧气时，A中应放________，B中应放________；反应的文字表达式是____________。
(2)制取二氧化碳时，A中应放________，B中应放________；反应文字表达式是________。
(3)该装置的长颈漏斗管口为什么必须浸没在液面以下?________________。
(4)如何检查该装置的气密性?____________________。
(1)组装仪器后，进行了装置气密性的检查，见下图。
请你帮他判断一下，这套装置是否漏气?_______________。
(2)他从稀硫酸、稀盐酸中选择了一种酸，与石灰石反应制CO2。想一想他不选另一种酸的理由_____________。
(3)小闵想用上图B装置来制取CO2，你认为是否理想？为什么？_________________。
(4)集满CO2的集气瓶，应该______(填“正”或“倒”)放在桌面上。
2.单选题- (共8题)
| A．倒入少量澄清石灰水，观察是否变浑浊 |
| B．将燃着的木条插入集气瓶中，观察是否立即熄灭 |
| C．倒入少量紫色石蕊试液，观察是否变红色 |
| D．将燃着的木条插入集气瓶口，观察是否立即熄灭 |
| A．②①④③⑤ | B．①②③④⑤ | C．②③④①⑤ | D．①④②③⑤ |
3.选择题- (共3题)
A little boy invited his mother to attend his school's first teacher-parent meeting. To the little boy's dismay(沮丧)， his mother said she would go. This would be the first time that his classmates and teachers met his mother and he was embarrassed by her appearance. There was a severe(严重的) scar (伤疤) that covered nearly the whole right side of her face. The boy never wanted to talk about why or how she got the scar.
At the meeting， the people were impressed by the kindness of his mother with the scar， but the little boy was still embarrassed and hid himself from everyone. However， he could hear clearly the conversation between his mother and the teacher.
“How did you get the scar on your face?” the teacher asked.
The mother replied， “When my son was a baby， he was in a room that caught on fire. Everyone was too afraid to go in because the fire was out of control， but I went in. As I was running towards his bed， I saw a burning wood falling down and I placed myself over him trying to protect him. I was knocked to be unconscious(无知觉的)， but luckily， a fireman came in and saved both of us.” She touched the burned side of her face. “This scar will be forever， but until today， I have never regretted doing what I did.”
When the little boy heard this， he couldn't help running towards his mother with tears in his eyes. He hugged her and felt his mother was greater than anyone. He held her hand tightly for the rest of the day.
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【1】题量占比
简答题:(2道)
单选题:(8道)
选择题:(3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：1
7星难题：0
8星难题：5
9星难题：4