1.单选题- (共4题)
①点燃酒精灯,给试管加热②熄灭酒精灯③检查装置的气密性④将高锰酸钾装入试管里,试管口放一小团棉花,用带导管的胶塞塞紧,并将它固定在铁架台上⑤用排水法收集氧气⑥将导管从水中取出。正确的操作顺序是( )
A.③④①⑤②⑥ | B.③④①⑤⑥② | C.④①③⑤②⑥ | D.④①③⑤⑥② |
A.工业上可以利用分离液态空气法制氧气 |
B.氧气可以支持燃烧,说明氧气具有可燃性 |
C.氦气的密度很小且稳定可用于探空气球 |
D.稀有气体通电时能发出不同颜色的光可制造霓虹灯 |
2.选择题- (共6题)
Chopsticks
⒈When chopsticks were invented?
In fact, before the invention of chopsticks, Chinese ancestors actually used hands to eat, but how did they eat soup(汤菜)and porridge? {#blank#}1{#/blank#} Chinese started to use chopsticks about 3,000 years ago in Shang Dynasty.
⒉Who invented chopsticks?
The records of using chopsticks have been found in many written books but lack physical evidence. However many stories are about the invention of chopsticks. One says that Jiang Ziya, an ancient wise man, created chopsticks. {#blank#}2{#/blank#} But there is no exact history record about the invention. We can only say that smart ancient Chinese invented chopsticks.
⒊How to use Chinese chopsticks.
Using two slim sticks to pick up food is actually not difficult. You can do it if you practice it for some time, even if you are a foreigner. The key to managing chopsticks is keeping one chopstick in position while moving the other to pick up food. {#blank#}3{#/blank#}
⒋Chopsticks Manners
Chopsticks are usually held in the right hand, and left-handed chopstick use is considered as improper in China. Playing with chopsticks is thought to be impolite. {#blank#}4{#/blank#}
⒌The philosophy of Chinese chopsticks
Chinese philosopher Confucius advised people to use chopsticks instead of knives because the metal knives remind people of cold weapons, which mean killing and violence.
⒍A chopsticks-themed museum can be found in Shanghai
If you are truly interested in chopsticks, you can pay a visit to the Shanghai Chopsticks Museum. The museum gathered more than 1,200 pairs of chopsticks from China, Korea, Japan and Thailand.{#blank#}5{#/blank#}
A. Chopsticks were introduced to many other neighbor countries due to its lightness and convenience.
B. It is considered to be polite and thoughtful to pick up food for the elderly and children.
C. Bamboo chopsticks are most frequently used in Chinese daily life.
D. The oldest one was from the Tang Dynasty.
E. There also go around some other stories.
F. Remember to practice with patience.
G. They had to use sticks to eat them.
1)起源:为了纪念古代诗人屈原;
2)时间:每年阴历五月初五;
3)主要活动:吃粽子、划龙舟等。
注意:1)词数100左右;
2)可适当增加细节,以使行文连贯。
Dear John,
Yours,
Li Hua
1)起源:为了纪念古代诗人屈原;
2)时间:每年阴历五月初五;
3)主要活动:吃粽子、划龙舟等。
注意:1)词数100左右;
2)可适当增加细节,以使行文连贯。
Dear John,
Yours,
Li Hua
3.填空题- (共5题)
(2)防止空气污染,是我们每个人的责任,请提出一条减少空气污染的建议:___________________
_______________________________________________________________________________________ 。
(3)实验室中固体药品贮存在 中,取用固体颗粒时宜用 ,粉末时用 。倾倒液体药品时标签 ,量取液体时用 ,视线应 。
(4)蜡烛火焰分为 、 、 其中温度最高的是 。燃烧后生成 和 。

(1)该实验的成败关键有两点:①燃烧匙内的红磷必须_____________________________;②酒精灯点燃红磷后,必须立即____________________________。
(2)红磷燃烧时的现象为_____________________________________________________。
(3)实验过程中钟罩内水面逐渐______________,该实验验证了_________________________。
(4)若实验中红磷的量太少,测得氧气的体积分数会________。若钟罩的气密性不好,测得氧气的体积分数会________。
(5)若实验结束,钟罩中水位上升不到预期位置,则实验失败的原因可能是:
____________________________________________________________(写出一点)。

(1)用来吸取和滴加少量液体的仪器是______;
(2)可以直接加热的仪器是______;
(3)实验室常用的加热仪器是________;
(4)排水集气法会用到的仪器是_______;
(5)量取液体时,需要用_______;
(6)少量溶液相互发生反应时,需要用______.


(1)写出图乙中各仪器的名称(任意写出5种):
________、________、________、________、________;
(2)制取氧气应选用的装置是________(填“甲”或“乙”),收集氧气可用________法和________法。此反应的文字表达式为:____________________________________。
(3)木炭在图丁中燃烧的现象是______________________________________。图戊中的现象为________________________________,说明木炭燃烧的产物有____________。
(4)木炭燃烧这个反应的文字表达式为:__________________________________。
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【1】题量占比
单选题:(4道)
选择题:(6道)
填空题:(5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:5
7星难题:0
8星难题:2
9星难题:2