1.推断题- (共1题)

(1)在图中标出五种物质的化学式;___________________________
(2)D与E反应的化学方程式为___________________________
(3)A与B反应的实验现象为___________________________
2.科学探究题- (共1题)
(猜想与假设)
甲同学猜想:样品可以用来配制生理盐水;
乙同学猜想:样品不可以用来配制生理盐水;
(表达与交流)
你认为,乙同学猜想的理由是(1) ;
(探究实验一)乙同学取样品溶于水,向溶液中加入氢氧化钡溶液,观察到有白色沉淀生成。过滤后,向滤渣中入足量的稀硝酸,沉淀部分溶解,但无其他现象,再过滤,得到滤液中的溶质和第一次过滤得到的滤液中所含有的阴离子不同。则样品中含有的一种可溶性杂质为(2)___________________________;
丙同学为了验证样品中的杂质,继续向第一次过滤得到的滤液中加入碳酸钠溶液,又观察到有白色沉淀产生,得出结论样品中还含有的另一种可溶性杂质氯化钙。
(反思与评价)请你评价丙同学的结论:(3)___________________________。
(提出问题)如何证明丙同学的结论?
(收集证据)乙同学再取样品溶于水,加入(4)__________溶液,振荡、过滤,向滤液中加入(5)_________溶液观察到(6)___________________________现象证明含有氯化钙。
(表达与交流)请你设计实验方案除去样品中的两种杂质将样品提纯为纯净的氯化钠。取样,依次加入(7)____ ______________三种试剂,过滤,再加入(8)_______________,最后通过蒸发得到可以配制生理盐水的纯净氯化钠固体。
3.简答题- (共1题)

(1)将图中装置所缺部分补充完整。
(2)写出反应的化学方程式___________________________。
(3)在此实验中使用仪器A给试管加热的注意事项是___________________________;
(4)用排水法收集到一瓶氧气,做铁丝燃烧实验,将绕成螺旋状的光亮铁丝下端系的火柴点燃后的操作是___________________________
4.单选题- (共13题)

A. ②⑤为同一周期元素的原子 B. ①②的元素在周期表的同一族
C. ①③④⑤是具有相对稳定结构的原子 D. ②③属于同种元素的同种粒子

A.每个柠檬酸分子中含有个碳原于8氢原子、7个氧原子 |
B.柠檬酸能使酚酞溶液由无色变红色 |
C.柠檬酸中的的氧元素的质量分数最高 |
D.向水中加入适量的白糖、果汁、柠檬酸的小苏打,可以制汽水 |
| A | B | C | D |
区分的物质 | 氨气和二氧化碳 | 聚乙烯塑料和聚氯乙烯 | 金和l8K黄金 | 硫酸钾和氯化铵 |
方案一 | .闻气味 | 加热。看是否熔化 | 加入稀盐酸 | 加入氯化钡溶液 |
方案二 | 通人澄清的石灰水 | 点燃,闻气味 | 观察颜色 | 加熟石灰研磨,闻气味 |
A.A | B.B | C.C | D.D |

①修建地铁占用土地和空问最少,运输量最大,在城市运输中运行速度最快
②车体通常采用铝合金.其表面喷漆主要是为了美观
③建地铁时会用到大量的钢筋混凝土金属材料
④地铁行驶时的动力来源是天然气
A.①④ | B.①② | C.①③ | D.仅① |
A.到目前为止,我国的稀土储量居世界第一位 |
B.空气是一种宝贵的资源,其中二氧化碳的体积分数约占0.94% |
C.地球表面的咸水占总水量的96.5%,都来自海洋 |
D.人们正在开发和利用的其他能源有生物质能、太阳能、风能、沼气等 |

A.t2℃时,在两个各盛有100g水的烧杯中,分别加入50g的甲、乙两种固体,充分搅拌,所得甲、乙溶液中溶质的质量不等 |
B.t1℃时,等质量甲、乙溶液中所含溶剂的质量甲等于乙 |
C.乙中含有少量甲,可以用冷却热饱和溶液的方法提纯甲 |
D.t2℃时,将甲、乙的饱和溶液降温至t1℃,甲溶液析出晶体的质量大于乙 |
选项 | 物质 | 杂质 | 试剂及用量 | 操作方法 |
A | CO | CO2 | 过量氢氧化钠溶液、浓硫酸 | 洗气 |
B | KCl溶液 | K2SO4 | 适量Ba(NO3)2溶液 | 过滤 |
C | CaO | CaCO3 | 无 | 高温煅烧 |
D | 硝酸钾溶液 | 硫酸钾 | 适量硝酸钡溶液 | 过滤 |
A.A | B.B | C.C | D.D |
选项 | 事实 | 解释 |
A | 氯化钠放到水里会逐渐“消失” | 氯化钠分子不断地运动到水分子中 |
B | 酒精溶液不导电 | 酒精溶液中没有自由移动的、带电的粒子 |
C | 宝石绚丽多彩 | 宝石中含有某些金属离子 |
D | CO有毒,而CO2无毒 | 分子的结构不同 |
A.A | B.B | C.C | D.D |
A.微量元素硒对人体有防癌、抗癌的作用 |
B.蔬菜和水果含有较多的纤维素 |
C.食品中的添加剂都是化学合成的 |
D.人体中一些微量元素是人体非必需的,如铝等 |
5.选择题- (共14题)
The sky is large place, and though it has been carefully examined for centuries, new features still turn up. Last March it was the rule of Uranus (天王星), and last week astronomers announced what may turn out to be a new planet, though a very small one, in the solar system.
The object was first sighted last month by Charles Kowal, an astronomer at the Hale Observatories in Pasadena, Calif. Mr. Kowal observed a faint trail of light on photographic plates, indicating that something was moving in relation to the background of stars. Other observers have confirmed the discovery.
The “mini-planet”, identified for the time being as “Object-Kowal”, appears to be about 1.5 billion miles away, between the orbit of Saturn and Uranus, and its diameter (直径) has been estimated at between 100 and 400 miles. Its orbit has not been determined yet, but if the orbit proves to be roughly circular, like that of the major planets, the new object would probably take 66 to 70 years to make a circuit of the sun.
Some astronomers have speculated that Mr. Kowal's discovery may be the first indication of an asteroid (小行星) belt beyond Saturn.
Everybody, welcome to {#blank#}1{#/blank#}(we) company. I am Luisa, Director of the department. Let me say something to you all. The starting of work can be exciting on the hand, and can also be {#blank#}2{#/blank#}(worry) on the other. No matter what your future job is, you will have to work with others. Leaning to get on well with others must come first,{#blank#}3{#/blank#} (include) all staff in the company and our {#blank#}4{#/blank#} (custom).
And secondly, right after my introduction, spend some time reading the introduction of our company and get to know the people in your office and find out {#blank#}5{#/blank#} the company is like. This afternoon you can walk around our workshops and know {#blank#}6{#/blank#} (much) about the products. No one is allowed {#blank#}7{#/blank#} (leave) the company before 5:30 pm. By the way, lunchtime {#blank#}8{#/blank#} (come) at 11:50 and it's free {#blank#}9{#/blank#} charge.
Remember: Learning is so important {#blank#}10{#/blank#} it can change your future life.
This is what I'd like to say to you at the moment. If you still have any question, please come to my office. Thank you.
Everybody, welcome to {#blank#}1{#/blank#}(we) company. I am Luisa, Director of the department. Let me say something to you all. The starting of work can be exciting on the hand, and can also be {#blank#}2{#/blank#}(worry) on the other. No matter what your future job is, you will have to work with others. Leaning to get on well with others must come first,{#blank#}3{#/blank#} (include) all staff in the company and our {#blank#}4{#/blank#} (custom).
And secondly, right after my introduction, spend some time reading the introduction of our company and get to know the people in your office and find out {#blank#}5{#/blank#} the company is like. This afternoon you can walk around our workshops and know {#blank#}6{#/blank#} (much) about the products. No one is allowed {#blank#}7{#/blank#} (leave) the company before 5:30 pm. By the way, lunchtime {#blank#}8{#/blank#} (come) at 11:50 and it's free {#blank#}9{#/blank#} charge.
Remember: Learning is so important {#blank#}10{#/blank#} it can change your future life.
This is what I'd like to say to you at the moment. If you still have any question, please come to my office. Thank you.
Everybody, welcome to {#blank#}1{#/blank#}(we) company. I am Luisa, Director of the department. Let me say something to you all. The starting of work can be exciting on the hand, and can also be {#blank#}2{#/blank#}(worry) on the other. No matter what your future job is, you will have to work with others. Leaning to get on well with others must come first,{#blank#}3{#/blank#} (include) all staff in the company and our {#blank#}4{#/blank#} (custom).
And secondly, right after my introduction, spend some time reading the introduction of our company and get to know the people in your office and find out {#blank#}5{#/blank#} the company is like. This afternoon you can walk around our workshops and know {#blank#}6{#/blank#} (much) about the products. No one is allowed {#blank#}7{#/blank#} (leave) the company before 5:30 pm. By the way, lunchtime {#blank#}8{#/blank#} (come) at 11:50 and it's free {#blank#}9{#/blank#} charge.
Remember: Learning is so important {#blank#}10{#/blank#} it can change your future life.
This is what I'd like to say to you at the moment. If you still have any question, please come to my office. Thank you.
Everybody, welcome to {#blank#}1{#/blank#}(we) company. I am Luisa, Director of the department. Let me say something to you all. The starting of work can be exciting on the hand, and can also be {#blank#}2{#/blank#}(worry) on the other. No matter what your future job is, you will have to work with others. Leaning to get on well with others must come first,{#blank#}3{#/blank#} (include) all staff in the company and our {#blank#}4{#/blank#} (custom).
And secondly, right after my introduction, spend some time reading the introduction of our company and get to know the people in your office and find out {#blank#}5{#/blank#} the company is like. This afternoon you can walk around our workshops and know {#blank#}6{#/blank#} (much) about the products. No one is allowed {#blank#}7{#/blank#} (leave) the company before 5:30 pm. By the way, lunchtime {#blank#}8{#/blank#} (come) at 11:50 and it's free {#blank#}9{#/blank#} charge.
Remember: Learning is so important {#blank#}10{#/blank#} it can change your future life.
This is what I'd like to say to you at the moment. If you still have any question, please come to my office. Thank you.
Recently I failed an exam. However, after I came out of my teacher's office, I told myself, “Smile! It's not so serious.”
I smiled a big smile and it worked a little, really.
Everyone gets frustrated sometimes. I used to be always influenced by {#blank#}1{#/blank#} (press) and I {#blank#}2{#/blank#} (be) often in low spirits. But one day I came {#blank#}3{#/blank#} a sentence in the Bible. “Do not be anxious about tomorrow, for tomorrow will be anxious for itself, let the day's own trouble be sufficient for the day.” It suddenly struck me, “{#blank#}4{#/blank#} (worry) about a problem doesn't help. Why not just give a big smile and face up the trouble?”
Now every time I want to cry, I remind myself that laughter is better than {#blank#}5{#/blank#} (tear) and anger. I{#blank#}6{#/blank#} (convince) that there's something magical about a smile. A smile helps me recover confidence and gives me the courage to move on.
Remember, whenever {#blank#}7{#/blank#} (face) with a setback, whenever you've been treated {#blank#}8{#/blank#} (unfair),{#blank#}9{#/blank#} it takes is determination and you can feel happy again. Smile at life,{#blank#}10{#/blank#} it will shine on you.
YOUTR KIDS ARE AMAZING -especially compared with everybody else s (who seem to cry all the time). How do you show your love for your kids this holiday season? With toys that are smooth and colorful, interactive and exciting. And with ones that have educational value - because you are the boss.
FLAX ART HOSPITAL PUZZLE AND PLAY SET
Here is a toy that doesn't need power, and the kids have to put it together themselves. This 50*piece-puzzle set is made of soft-edged hardwood and makes a complete hospital, with an X-ray room. It also includes eight patients, a car and a driver. $135; flaxart.com.
TINY LOVE ACTIVITY BALL
Sure, it's cool, but this colorful baby toy also develops problem solving and motor skills. It has a head and legs, a magnetic (磁铁) hand and a tail. Suitable for little ones from 6-36 months. $19.95; tiny-love.com.
ROBOSAPIEN
This small, remote-control robot is really powerful. It performs 67 preprogrammed functions, including throwing, kicking, picking up and dancing. You can even program your own function - which, sadly, does not include doing windows. $ 99; robosapienonline.com.
MINI PEDAL CAR
Want a mini Cooper but can't fit the family inside? Get one for the kids. They can jump into this mini car, which comes in hot orange with a single adjustable seat, and ride away. But it could spoil them for that used car they'll be driving when they turn 16. For ages 3 to 5. $ 189; mlnicar.com (click on “gear up” then “mini motoring gear”)
增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。
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。
Dear Andy,
You ask about my health your last letter. So I am going to tell you anything about it. I think I am very healthily. That's why my family live near the sea and we have fish about four time a week. That my mom cooks for us is always delicious. My family don't eat much fat and sugar either. There are some photos taking last week in the letter that I hope you like them.
Goodbye.
Zhou Kai
要点:1)时间、地点、人物及活动(赠送书籍、玩具等)
2)孤儿院孩子们的反应;
3)简短评论。
要求:1)词数100左右
2)可合理增加细节,以使行文连贯。
Honesty is always the best policy. Though lying often allows one to escape punishment for the moment, the 1 will always come out. In most situations, one will find that lying does not offer the same2 benefits as honesty does.
Sometimes people lie for the purpose of being3For example, my cousin Joanne was invited to her friend's birthday party and she asked for my 4 on her dress. In fact, her dress was terrible, but I5 and told her that the dress was beautiful. How could I 6her excitement over the dress? Looking back at that7 I probably should have told her the truth, considering that the guests8her.
After that I realized the 9 of telling the truth. My brother once 10his best friend to cheat on a math test. That night, he told me what happened at school. I was very 11and asked him to say sorry to his math teacher immediately when he went to school the next day.12 the teacher only forced the two boys to take the test again. If my brother had not 13 my advice, he might have been 14 school.15 my brother's behavior sets a good example for his friend. So he16 his friend and helped him avoid serious punishment.
In some cases, lying seems to be17 For example, how can one 18 to young children what has happened when they lose one of their family members? Lying seems kind, but if one lies to children, they may feel more 19 when they discover the facts. Therefore, it is important for each of us to be 20 anytime.
Honesty is always the best policy. Though lying often allows one to escape punishment for the moment, the 1 will always come out. In most situations, one will find that lying does not offer the same2 benefits as honesty does.
Sometimes people lie for the purpose of being3For example, my cousin Joanne was invited to her friend's birthday party and she asked for my 4 on her dress. In fact, her dress was terrible, but I5 and told her that the dress was beautiful. How could I 6her excitement over the dress? Looking back at that7 I probably should have told her the truth, considering that the guests8her.
After that I realized the 9 of telling the truth. My brother once 10his best friend to cheat on a math test. That night, he told me what happened at school. I was very 11and asked him to say sorry to his math teacher immediately when he went to school the next day.12 the teacher only forced the two boys to take the test again. If my brother had not 13 my advice, he might have been 14 school.15 my brother's behavior sets a good example for his friend. So he16 his friend and helped him avoid serious punishment.
In some cases, lying seems to be17 For example, how can one 18 to young children what has happened when they lose one of their family members? Lying seems kind, but if one lies to children, they may feel more 19 when they discover the facts. Therefore, it is important for each of us to be 20 anytime.
The most important lessons in life that we need to learn are the results of our poor decisions. Although time and experience are the best teachers, we also suffer from experiences such as our sacrifices, suffering and the hardships. Good judgment develops only when we truly learn from our mistakes. However, many people keep repeating the same mistakes before learning their lessons because as they say, they are just humans who are subject to making mistakes.
Our weaknesses in life can be turned into our strengths if we immediately acknowledge and recognize the fact that we mess up and learn from them. Our good or bad experiences help us learn better judgment in life. Yet, too many people are in denial and place the blame on others without realizing that the minute they take responsibility for their action is when the learning process begins. Apart from learning from our own experience, we can also learn valuable lessons from the experience of others. It allows us to observe our behavior from another angle. When we recognize our mistakes and prevent them from happening again, we are, therefore, learning.
Quickly identifying our mistakes and changing behavior accordingly requires less time and energy than denying mistakes. However, acknowledgement of mistakes requires belief in the idea that the perfection is not possible.
It is easier to analyze our mistakes especially when we talk to others, which can help people to sort out comments or criticisms after a mistake is made. Despite our tendency to avoid mistakes, timely acknowledgement is one of the best ways to prevent them from repeating.
In England, there is a nice cottage with a large garden where lives an old man. The1where bees and butterflies dance and gorgeous flowers2all year around is so well-tended that every passer-by cannot but stop for a3.
One day a young painter4this garden and he was totally lost in admiration at its beauty5how happy he could be if he lived in such a6place. Then, suddenly he found the old gardener was blind.7 the painte8that old man, asking “Why are you busy9these flowers which you can't see as a matter of fact?” The blind gardener said10 “I can tell you four reasons. First, I was a gardener when I was young, and I really like this job. Second11I can't see these flowers, I can touch them. Third, I can12he sweetness of them. As to the last one, that's you.”
“Me?13you don't know me.” responded the painter.
"Yeah. But I know flowers are angels which everyone knows and would14turn them down. People who love life would stop by and thi15prospect would have their eyes16and hearts pleased. Mean while, it also extends a17to me to have a word with you here.”
Actually, the blind man18flowers in his heart. Failing the19of the beauty of blossoming, he surely can20he voice of it, I suppose.
Ways To Manage Stress Creatively
Stress is a huge problem for us all. Here's what I've learned and applied to manage stress using my creativity.
1){#blank#}1{#/blank#}
Putting my creativity and my work first, I often neglected to eat, exercise, even stand up from my desk. I now realize that how I feel physically (and mentally) is more important than the work I create. Taking care of myself includes all natural remedies(疗法). I'm learning how to say no to social pressures, in favor of my own well-being.
2)Don't worry about what other people think of you.
This is easier said than done, but I promise it does come with age.{#blank#}2{#/blank#}A lot of people do offer unsolicited(自发的) advice. It is human nature to want to help other people. But if that advice is coming from a place of control or judgment, RUN in the opposite direction.
3)Don't compare.
{#blank#}3{#/blank#}Most people are not as happy as they describe themselves to be. The best advice I ever heard was this:Don't compare your inside to other people's outside. Be open to new experiences, be kind to yourself and accepting of the journey which is life. Being present means not thinking into the future, or harping(唠叨) on the past. The coolest thing about being present is that CREATIVITY LIVES IN THE MOMENT{#blank#}4{#/blank#}
4)Your intentions matter.
{#blank#}5{#/blank#}What was your intention? I remind myself to enjoy the process of my creative fun stuff, it's for me. If others like it, great, but it's the enjoyment of my creative intention, in the moment, that I treasure.
A. Stop judging
B. Each moment is UNIQUE
C. We have to work in order to live
D. Take care of yourself--Mind AND Body
E. Stress is often caused by comparison to others
F. It's important to remember why you started doing something
G. No one cares about what you're doing unless what you're doing affects them
6.填空题- (共5题)

(1)反应前物质A属于 (填物质类别);
(2)请在反应后的框网中补充相应的粒子图形(在图中完成);
(3)在此反应中发生改变的粒子是______(填化学式)。
2O、O2、2H2O2、Ca2+、2S2-、SO2
(1)选出的一组符号为 ______;
(2)分类依据是___________________________
(1)建筑过程中,使用的挖掘机铲斗应该选用的金属材料是___________________;
A.硬度大、韧性好的锰钢 |
B.易加工、抗腐蚀的铝合金 |
C.硬度大的生铁 |
(3)购物广场和超市大多数电线为铜丝制的,铜单质也可以和酸反应,只是不能生成氢气。
例如:铜和浓硝酸反应,生成二氧化氮、一种可溶性铜盐和一种常见无色液体,其反应的化学方程式为① ,反应前后氮元素的化合价分别② 。
(1)导致全球气候变暖,温室效应增强的气体有______;
(2)全球气候变暖的危害______(答一点);
(3)从身边的小事做起,能减缓温室效应增强的一点做法______。
为了增强蔬菜的抗寒能力,需要施加的化肥种类是(1)___________________________,马铃薯产量高,营养丰富,可烹饪出美味佳肴,马铃薯富含淀粉,其化学式为(2)_______。所提供的营养素的作用是(3)___________________________。
7.实验题- (共1题)
-
【1】题量占比
推断题:(1道)
科学探究题:(1道)
简答题:(1道)
单选题:(13道)
选择题:(14道)
填空题:(5道)
实验题:(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:2
5星难题:0
6星难题:10
7星难题:0
8星难题:8
9星难题:2