【题目】(双选题)有一瓶Na2SO3溶液，由于它可能部分被氧化，某同学进行如下实验：取少量溶液，滴入Ba(NO3)2溶液，产生白色沉淀，再加入足量稀硝酸，充分振荡后，仍有白色沉淀。对此实验下述结论正确的是( )
A．Na2SO3已部分被空气中的氧气氧化
B．加入Ba(NO3)2溶液后，生成的沉淀中一定含有BaSO4
C．加硝酸后的沉淀一定是BaSO4
D．此实验不能确定Na2SO3是否部分被氧化
教学练新同步练习系列答案
课前课后同步练习系列答案科目：高中地理 来源： 题型：
【题目】将a g铁和氧化铁的混合物加入足量的盐酸中，充分反应，固体无剩余。测得参加反应的HCl为0.08 mol，放出标准状况下的气体0.224 L。则下列判断中正确的是( )
A．原混合物中n(Fe)∶n(Fe2O3)＝2∶1
B．向溶液中滴入KSCN溶液，显红色
C．无法计算原混合物的质量
D．溶液中Fe2＋和Fe3＋的物质的量之比为3∶1
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科目：高中地理 来源： 题型：
【题目】完形填空
体裁 | 话题 | 词数 | 难度 | 建议时间 |
记叙文 | 老师的鼓励和信任 | 340 | ★★★☆☆ | 17分钟 |
I was nine when I arrived at the Children’s Home in Nashua in 1965. I failed third grade that year, __1__ made it through a second time, and had 2 through fourth grade by the time I 3 Pauline Jambard’s fifth-grade class at Charlotte Avenue Elementary School.
I was 4 I wasn’t smart like the other kids, and I hoped I could make it through fifth grade. I felt Ms. Jambard took a(n) 5 interest in me. Of all the subjects in school, reading was my 6 . She would tell me, ＂Terry, keep reading. If you can understand what you’re reading, you’ll be more 7 than most kids.＂ After I read all the books in our program, I started reading the set of Encyclopaedia Britannica in our classroom. I couldn’t find 8 to read, and I started to really like school.
That December, the Children’s Home 9 a Christmas party for family and community members. My brother and I
After I 12 from Ms. Jambard’s class in 1969, I moved and lost all 13 with my teacher. In 1983, I was on a business trip and had to drive through Nashua. I got a 14 to drop by Charlotte Avenue Elementary School. I was walking toward her classroom 15 she came out in the hallway and said ＂Terry!＂ It was as if I had 16 left. I was in seventh heaven on my flight home.
We have stayed in touch, and I 17 Ms. Jambard at least once a year. Because of the confidence she 18 in me, I went on to have a successful 19 in engineering and law enforcement. I don’t know if she realizes how much she helped me, but I’ll never forget her kindness and 20 in me.
【1】A. narrowly B. desperately C. shortly D. gradually
【2】A. broke B. looked C. struggled D. sailed
【3】A. considered B. skipped C. consulted D. reached
【4】A. convinced B. stressed C. motivated D. astonished
【5】A. distant B. instant C. constant D. consistent
【6】A. comfort B. honor C. limit D. favorite
【7】A. noble B. patient C. diligent D. clever
【8】A. anything B. enough C. something D. nothing
【9】A. caught B. received C. gave D. admitted
【10】A. invite B. attend C. adopt D. introduce
【11】A. extremely B. hardly C. hopelessly D. gradually
【12】A. escaped B. returned C. dismissed D. graduated
【13】A. track B. encouragement C. touch D. support
【14】A. decision B. chance C. leave D. challenge
【15】A. while B. until C. when D. after
【16】A. never B. already C. long D. still
【17】A. recall B. bother C. care D. visit
【18】A. missed B. expected C. observed D. planted
【19】A. dream B. career C .image D. hobby
【20】A. smile B. faith C. growth D. acceptance
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科目：高中地理 来源： 题型：
【题目】听一段材料，回答下面几个小题。
【1】What is Mr. Chester doing?
A. Telephoning someone.
B. Speaking to the woman.
C. Leaving the man a message.
【2】What is the man's last name?
A. Oliver. B. Horst. C. Robert.
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科目：高中地理 来源： 题型：
【题目】His success doesn’t __________ out of nowhere. As he self-studied College English in high school he has had a
head start over the people of his age.
A. break up B. spring up
C. make up D. live up
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科目：高中地理 来源： 题型：
【题目】七选五
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Most of us will admit that on occasions we can be bad-tempered. This can be for a number of reasons.
1 As the body and mind are tired, it seems to take us less time to become angry just because of something that is of little importance. Young children are usually the cause of tiredness and it is highly likely that parents allow themselves to release (释放) their exhaustion directly at the children. Children are very good at remembering these instances and it will affect them for a long time. 2
Diet and lifestyle can be key factors in causing a bad temper. Some people don't realize that their diet can directly affect their moods. Processed food and items that contain a lot of sugars, especially those that aren't natural sugars, can cause a rise in blood sugar. 3 Similarly, lifestyle choices can encourage bad tempers and poor moods, especially if drug and alcohol are used too frequently. 4
If you have noticed that you are becoming increasingly bad-tempered, it is important that you take steps to try and regain control. 5 After you find the cause, try and make positive changes to prevent this from occurring in the future.
A．Find your ways to release your anger.
B．Check what it is that causes the bad mood.
C．Tiredness is often the most common reason.
D．Managing your anger is good for your health.
E．Therefore, it is important to have more patience when with children.
F．This rise can have a very negative effect o moods and mental performance.
G．So it is important to keep away from these temptations (诱惑) for your own mental state.
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科目：高中地理 来源： 题型：
【题目】当有大量Cl2逸散到周围空间，你认为以下措施合理的是( )
①迅速拨打求救电话；②迅速撤离至地势较高处；③迅速撤离至下风口；④用浸有一定浓度NaOH溶液的口罩或毛巾捂住口鼻；⑤用浸有一定浓度Na2CO3溶液的口罩或毛巾捂住口鼻；⑥尽可能切断泄漏源(如堵住泄漏口，将其浸入碱液池等)
A．①②④⑥ B．①②⑤⑥
C．①③⑤⑥ D．①②④⑤⑥
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科目：高中地理 来源： 题型：
【题目】
用方框中所给短语的适当形式填空。
off to be impressed by commit to be full of on the market spend in upwards of range from to be worth a variety of |
【1】 I like shopping in this supermarket, for food is sold here.
【2】When you your whole being something, you may find the world as you yourself totally different.
【3】 The little boy hurried fetch his mum’s doctor when he saw her faint.
【4】 Her eyes tears when she heard that her mother was out of danger.
【5】 Now more and more city adults their leisure time trying to improve themselves at school or college.
【6】 If you want to buy this type of computer, you have to wait for another week, for they are not yet.
【7】 Although she is sixty, she looks energetic and youthful.
【8】 The prices of leather shoes $ 10 $ 100 a pair in our shop.
【9】He pretended to their new car but he was only acting a part.
【10】 I don’t think this kind of diamond so much.
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科目：高中地理 来源： 题型：
【题目】B
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Does this situation seem familiar to you? Your English is progressing well, the grammar is now familiar, the reading comprehension is no problem, and you are speaking quite fluently.
4
First of all, remember that you are not alone. Listening is probably the most difficult job for almost all learners of English as a foreign language. The most important thing is to listen as often as possible.
5 The Internet is really a useful tool for English students. You can download The RealPlayer from RealMedia.com. The RealPlayer allows you to use the Internet like a radio station. Once you have begun to listen on a regular basis, you might still be frustrated (受阻)by limited understanding. 6
Here is some of the advice I give my students:
● Accept the fact that you are not going to understand everything.
● Stay relaxed when you do not understand, and try listening to the material for more times.
● Do not translate everything into your native language.
● 7 Don’t concentrate on details before you have understood the main ideas.
● Listen to something you enjoy.
I remember the problems I had in understanding spoken German when I first went to Germany. In the beginning, when I didn’t understand a word, I insisted on translating it in my mind. This method usually resulted in confusion. 8 Firstly, translating creates a barrier between the listener and the speaker. Secondly, most people repeat themselves constantly. By remaining calm, I noticed that even if I didn’t pay much attention I could usually understand what the speaker had said.
A. What should you do?
B. Listen for the general idea of the conversation.
C. But listening is a problem for most of the beginners!
D. But you can’t follow a native English speaker at all!
E. So, what you need to do is to find listening resources.
F. Then, after the first six months, I discovered two extremely important facts.
G. However, after several weeks, I got used to the new environment in Germany.
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