1.选择题- (共16题)
2.过氧化钠是钠在空气或氧气中燃烧的产物之一,纯净的过氧化钠是白色的粉末.在某次观看化学实验视频时,晓欣看到视频中的老师将一些过氧化钠放到一盆水中,然后水盆中产生了许多气泡,随后视频中出现了这样一个问题:“过氧化钠与水反应产生的气体是什么呢?”下面是晓欣记录的视频中老师接下来的操作,请你根据所学知识回答下列问题.
4.已知:C+H2O {#mathml#}{#/mathml#} CO+H2,120℃、101kPa时,将2L H2O (气)、2L CO、1L CO2、0.5L O2和1L H2组成的混合气体通过分别盛有足量铜粉、炭粉和氧化铜粉的三个灼热的反应管.假设气体通过每个反应管都充分反应,且不论三个反应管以何种顺序排列,则( )
5.某混合气体可能含有CO、H2、CO2和H2O(气)中的一种或几种.为验证其组成,同学们进行实验的装置和现象如下(假设气体均吸收完全),常见干燥剂有:浓硫酸、氯化钙、碱石灰、生石灰、氢氧化钠,后三种还可以吸收二氧化碳,判断正确的是( )
6.某混合气体可能含有CO、H2、CO2和H2O(气)中的一种或几种.为验证其组成,同学们进行实验的装置和现象如下(假设气体均吸收完全),常见干燥剂有:浓硫酸、氯化钙、碱石灰、生石灰、氢氧化钠,后三种还可以吸收二氧化碳,判断正确的是( )
7.某混合气体可能含有CO、H2、CO2和H2O(气)中的一种或几种.为验证其组成,同学们进行实验的装置和现象如下(假设气体均吸收完全),常见干燥剂有:浓硫酸、氯化钙、碱石灰、生石灰、氢氧化钠,后三种还可以吸收二氧化碳,判断正确的是( )
8.某混合气体可能含有CO、H2、CO2和H2O(气)中的一种或几种.为验证其组成,同学们进行实验的装置和现象如下(假设气体均吸收完全),常见干燥剂有:浓硫酸、氯化钙、碱石灰、生石灰、氢氧化钠,后三种还可以吸收二氧化碳,判断正确的是( )
9.某混合气体可能含有CO、H2、CO2和H2O(气)中的一种或几种.为验证其组成,同学们进行实验的装置和现象如下(假设气体均吸收完全),常见干燥剂有:浓硫酸、氯化钙、碱石灰、生石灰、氢氧化钠,后三种还可以吸收二氧化碳,判断正确的是( )
10.某无色气体可能由CH4、H2、CO、CO2中的某两种气体组成,在恒温、恒压条件下,通过过量的澄清石灰水,未见变浑浊,混合气体在O2中能够点燃,充分燃烧后气体中二氧化碳和水蒸气分子个数比为1:1.则原混合气体的成分可能是( )
2.单项选择- (共11题)
17.
—What do you think will be the future of your new invention?
—I’m sure it will have many different _________ in the industry.
A.applications B.responsibilities
C.characters D.Entrances
18.
It will be ___ wonderful world if all nations live in ____ peace with each other.
A.a ; a | B.the ; the | C.a ; the | D.a ; / |
19.
--- I think what he has done for the company deserves__________ at the meeting.
--- I can’t agree more.
--- I can’t agree more.
A.being praised | B.praised | C.to praise | D.praising |
20.
We do hope that one day the Chinese language will become a __________ language, that is, everyone in the world will communicate in it.
A.common | B.universal | C.popular | D.sensitive |
21.
He saw the MP4 player a moment ago, but he didn’t know how it disappeared _______.
A.gradually | B.foolishly | C.briefly | D.magically |
22.
Before long the Greens moved to a bigger city ____ the children could attend a better high school.
A.even if | B.so that | C.now that | D.as if |
23.
--- It’s said that another new car factory _______ now.
--- Yeah. It ________ one and a half years.
--- Yeah. It ________ one and a half years.
A.is building; will take | B.is built; will take |
C.is being built; will take | D.is being built; takes |
24.
The musicians may start as a group of high-school students, ________ practising their music in someone’s house is the first step to fame.
A.for which | B.for whose | C.for them | D.for whom |
25.
The teacher as well as the students who _____ fond of football, _____ playing together.
A.is; is | B.are; are | C.is; are | D.are; is |
26.
Recently, some Internet rumors(谣言) appeared on the Internet. ________, they destroyed the trust of the public to our government and society.
A.In a word | B.Above all | C.on the contrary | D.As a result |
试卷分析
-
【1】题量占比
选择题:(16道)
单项选择:(11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:1
5星难题:0
6星难题:9
7星难题:0
8星难题:1
9星难题:0