1.计算题- (共2题)

已知:Na2SO4+ BaCl2 = BaSO4↓ + 2NaCl
请根据以上信息,计算反应后所得溶液中溶质的质量分数。
2.单选题- (共9题)
A.4Al + 3O2=2Al2O3 |
B.Zn + H2SO4=ZnSO4 + H2↑ |
C.CaCO3![]() |
D.3MnO2+4Al![]() |
下列说法不正确的是
A.SO2污染空气 | B.X的化学式为Na2SO4 |
C.Na2S2O3中S的化合价为+2 | D.Na2S2O4要在干燥阴凉处密闭保存 |
A.氧气约占空气总体积的1/5 |
B.氧气可以支持燃烧,说明氧气具有可燃性 |
C.夏天鱼池内需要增氧,是因为温度升高,氧气在水中的溶解度减小 |
D.氧气供给呼吸,它和体内物质反应,释放能量,维持生命活动的需要 |

①稀盐酸和石灰石 ②水和氧化钙
③水和氢氧化钠 ④水和硝酸铵
A.①②③④ | B.①②③ | C.①②④ | D.②③④ |
(1)氯化钠和碳酸钠溶解度相等时的温度为 。

(2)20℃时,碳酸钠饱和溶液中,溶质与溶剂的质量比为 。
(3)生活在盐湖附近的人们习惯“夏天晒盐,冬天捞碱”,其原因是 。
(4)向氯化钠、碳酸钠的混合溶液中加入一定量的氢氧化钙溶液,会发生如下反应:Na2CO3 + Ca(OH)2 = CaCO3↓+ 2NaOH,反应后溶液中溶质的组成为(写出所有可能) 。
3.选择题- (共11题)
阅读理解
A walk in one of the regional parks and forests is a great way to explore the diverse landscape of greater Wellington.
From coastal sands to historic paths,farmland to green native forest,the parks and forests offer a variety of countryside and scenery to suit all ages and levels of fitness.
Most of the walks offer the chance to take a break and enjoy picnicking or swimming.
What to take
Many of the walks go through areas exposed to winds and changeable weather.Please take with you some water and sun hat especially on walks marked with hiking symbol.Always take some warm clothing and a rain jacket.
All times stated are estimates for the return trip.
Where indicated, mountain bikes and horses riders may use tracks.
Opening hours
The parks and forests are open daily from 8 am till dusk.Parks or walks marked with a farm animal symbol may be closed for lambing Aug—Nov.Please check with the ranger or on our website www.gw.govt.nz.
Caring for your pack
●Pack in and pack out.Take your rubbish home and recycle it when possible.
●Keep dogs under control and remove droppings.
●Do not remove, disturb or damage native plants or animals.
●Light no fires.
●Poison may be laid in the parks and forests to control the field mouse.Do not remove notice or disturb baits, lures, trapping lines or the mousetraps.
根据短文内容,选择最佳答案,并将选定答案的字母标号填在题前括号内。
阅读阿长与《山海经》,完成题目。
①长妈妈,已经说过,是一个一向带领着我的女工,说得阔气一点,就是我的保姆。我的母亲和许多别的人都这样
称呼她,似乎略带些客气的意思。只有祖母叫她阿长。我平时叫她“阿妈”,连“长”字也不带;但到憎恶她的时候,——例如知道了谋死我那隐鼠的却是她的时候,就叫她阿长。
②我们那里没有姓长的;她生得黄胖而矮,“长”也不是形容词。又不是她的名字,记得她自己说过,她的名字是叫做什么姑娘的。什么姑娘,我现在已经忘却了;总之不是长姑娘;也终于不知道她姓什么。记得她也曾告诉过我这个名称的来历:先前的先前,我家有一个女工,身材生得很高大,这就是真阿长。后来她回去了,我那什么姑娘才来补她的缺,然而大家因为叫惯了,没有再改口,于是她从此也就成为长妈妈了。
③虽然背地里说人长短不是好事情,但倘使要我说句真心话,我可只得说:我实在不大佩服她。最讨厌的是常喜欢切切察察,向人们低声絮说些什么事,还竖起第二个手指,在空中上下摇动,或者点着对手或自己的鼻尖。我的家里一有些小风波,不知怎的我总疑心和这“切切察察”有些关系。又不许我走动,拔一株草,翻一块石头,就说我顽皮,要告诉我的母亲去了。一到夏天,睡觉时她又伸开两脚两手,在床中间摆成一个“大”字,挤得我没有余地翻身,久睡在一角的席子上,又已经烤得那么热。推她呢,不动;叫她呢,也不闻。
阅读下面短文,从短文后各题所给四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑
Teachers selected from each district school for the Teacher of the Year competition were recognized.The competition's winner will be1in the spring.All those model teachers got me to think about some of my teachers through the years, and how they2me.
My college adviser, J.C.Casey, had a big3on my life.She was a teacher and friend.She4me to consider journalism as a career.My high school math teacher,Kathy Cloud,took the time to5math to me in a way I could 6understand.I'd struggled with math until I got in Cloud's classes.She gave me the7to realize I could do it.
My first-grade teacher, Darlene Dryden, held me back. Now, most people wouldn't8the teacher that kept them back a grade fondly, but Dryden has always been my9teacher.I was the youngest person in my class and very shy. She thought I10another year to mature before moving on to second11.She didn't make me feel12for having to repeat the grade.Instead,he made me feel13.I think I was her favorite, too.
My senior year of high school, right before14,I wrote Dryden a note letting her know that I'd become a good student and was going to15and that she'd had a16in that.
The Norman teachers17Wednesday are just a few of the many who are in the classrooms every day making 18in their students' lives.They may not even know the19impact(影响)they're having.I know it's not an20 job, but teachers, just remember that you're a Mrs.Dryden to somebody.
阅读下面短文,从短文后各题所给四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑
Teachers selected from each district school for the Teacher of the Year competition were recognized.The competition's winner will be1in the spring.All those model teachers got me to think about some of my teachers through the years, and how they2me.
My college adviser, J.C.Casey, had a big3on my life.She was a teacher and friend.She4me to consider journalism as a career.My high school math teacher,Kathy Cloud,took the time to5math to me in a way I could 6understand.I'd struggled with math until I got in Cloud's classes.She gave me the7to realize I could do it.
My first-grade teacher, Darlene Dryden, held me back. Now, most people wouldn't8the teacher that kept them back a grade fondly, but Dryden has always been my9teacher.I was the youngest person in my class and very shy. She thought I10another year to mature before moving on to second11.She didn't make me feel12for having to repeat the grade.Instead,he made me feel13.I think I was her favorite, too.
My senior year of high school, right before14,I wrote Dryden a note letting her know that I'd become a good student and was going to15and that she'd had a16in that.
The Norman teachers17Wednesday are just a few of the many who are in the classrooms every day making 18in their students' lives.They may not even know the19impact(影响)they're having.I know it's not an20 job, but teachers, just remember that you're a Mrs.Dryden to somebody.
假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下短文。短文中共有10处错误,每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号(∧),并在此符号下面写出该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在该词下面写出修改后的词。
注意:1)每处错误及其修改均仅限一词;
2)只允许修改10处,多者(从第11处起)不计分。
China's higher education is developing very fast.The number of college students are quite small in the 1980s, now nearly fourteen million students are studying in colleges and universities.
Why does China's higher education develop such quickly? Several factors contribute to it. First of all, its quick development results China's rapid socially and economic development.Through the reform and opening up, people have become richer and have much money to invest in education. Secondly, our government had attached great importance to higher education and taken out practical measures to encourage people to go to college. Beside, with the development of society, more and more people hope to receiving higher education.
假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下短文。短文中共有10处错误,每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号(∧),并在此符号下面写出该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在该词下面写出修改后的词。
注意:1)每处错误及其修改均仅限一词;
2)只允许修改10处,多者(从第11处起)不计分。
China's higher education is developing very fast.The number of college students are quite small in the 1980s, now nearly fourteen million students are studying in colleges and universities.
Why does China's higher education develop such quickly? Several factors contribute to it. First of all, its quick development results China's rapid socially and economic development.Through the reform and opening up, people have become richer and have much money to invest in education. Secondly, our government had attached great importance to higher education and taken out practical measures to encourage people to go to college. Beside, with the development of society, more and more people hope to receiving higher education.
4.填空题- (共1题)
-
【1】题量占比
计算题:(2道)
单选题:(9道)
选择题:(11道)
填空题:(1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:1
5星难题:0
6星难题:6
7星难题:0
8星难题:3
9星难题:2