课时作业10
课时作业十
A(全员必做)
(时间：45分钟满分：100分)
Ⅰ.选词并用其适当形式填空
bargain, replace, advance, enthusiasm, approximate, defeat, earn, balance, contain, behave 1．Have you ever dreamed of becoming a businessman to earn lots of money?
2．He was enthusiastic about sports，for he was an extraordinary athlete.
3．You cannot afford to criticize others when you behave so badly yourself.
4．You must learn to keep your balance in skating.
5．He thought that freedom and happiness were of great importance and nothing could replace them.
6．After years of hard work，Charlie had approximately $2 million.
7．She is good at bargaining with dealers.
8．This book contains all the information you need.
9．The team’s defeat is a beneficial warning before the World Cup.
10．I signed to him to keep away，but he continued to advance．
Ⅱ.完成句子
1．If you became rich，would you like to give away your money to (把钱捐赠给) those who are out of work (失业)?
2．The other day he determined to drop out of (从……中退出) the rich.
3．Charlie said that he was tired of (厌倦了) that kind of life for fame and fortune.
4．When he was aware that he was always concerned about (总是担心……) his fortune，he felt ashamed of (对……感到羞愧) his greed.
5．Now money doesn’t appeal to him (对他有吸引力) and annoy him (使他烦恼) any more.
Ⅲ.联句成篇(选用练习Ⅰ、Ⅱ中的句子，根据语篇中的提示加以改写，完成语篇翻译) 你曾梦想成为商人赚很多的钱吗？如果你的梦想成真，你愿意把你的钱捐赠给那些失业的人吗？查利就是一个这样的人。经过多年的辛苦劳动，他大约有两百万美元。前几天他决定退出富人的圈子。当记者采访他时(用时间状语从句的省略)，查利说，他厌倦了那种追名逐利的生活。当他意识到自己总是为自己的财富担心时，他为自己的贪婪感到羞愧。另外，他认为自由和幸福是非常重要的，没有什么能替代它们。现在金钱对他没有了吸引力，也不会给他带来烦恼了。
答案Have you ever dreamed of becoming a businessman to earn lots of money? If your dream came true，would you like to give away your money to those who are out of work? Charlie was such a person. After years of hard work，he had approximately $2 million. The other day he determined to drop out of the rich. When interviewed by the journalist，Charlie said that he was tired of that kind of life for fame and fortune. When he was aware that he was always concerned about his fortune，he felt ashamed of his greed. Besides，he thought that freedom and happiness were of great importance and nothing could replace them. Now money doesn’t appeal to him and annoy him any more.
Ⅳ.阅读理解
A
Lesley Ballan，who w as so fat that she couldn’t climb the stairs to her lectures，is top of the
class after losing 10 stone(英石)—to become a cookery teacher.“Thinking back，it was terrible.I would eat fatty foods on a daily basis without care.I knew I was putting on weight，but I didn’t want to think about it.”
Les ley’s we ight shot up while she was studying home economics in university.She became addicted to fatty cheese and hooked on(迷上)junk food.As she put on the weight，she became depressed，sleeping up to 15 hours a day and nodding off during lectures.
Lesley realized she had to slim down.She visited her doctor in 2011 after feeling ill，and was told the fat around her organs was damaging her health.The pounds started dropping off when she changed her high calorie snacks for healthy meals.Lesley added，“The shock jolted(唤醒)me into finally doing something.I started gradually，by going on a diet—and eventually began going to the gym，which helped a lot.I no longer eat cheese and only have bread once a week.In a normal exercising session，I use the cross-trainer for half an hour and then hit the exercise bike for 10 minutes before finishing off with rowing and running.”
It’s amazing that her life has been turned around after losing her extra weight.Lesley has undergone her first successful period as a cookery teacher in a 10-week placement.She is now in the final year of her degree in food and consumer science，and will then go on to teacher training.
I’m happier，healthi er and more confident.I’m training to be a home economics teacher.I’ve got so much more confidence and enthusiasm about life now.”Lesley said，“I still have takeaways and chocolate，but just not as much.Everything is proper.I can wear any dress I want now.It’s amazing.”
1．What was the matter with Lesley?
A．She lost confidence in her life totally.
B．She was too fat to walk upstairs.
C．She couldn’t pass the exam in university.
D．She had a hard time in giving lectures.
B[由第一段第一句的内容可知Lesley过胖，以致无法爬楼梯而去听讲课。]
2．What does the underlined phrase“shot up”probably mean?
A．Watched.B．Rose.
C．Changed. D．Reduced.
B[由第二段内容可知Lesley的体重“迅速增长”。]
3．In 2011，Lesley realized it was time to ．
A．study harder
B．take up cooking
C．slim down and keep fit
D．follow the fashion
C[由第三段第一句可知。]
4．To lose weight，Lesley did all the things EXCEPT ．
A．going on a diet
B．rowing and running
C．going to the gym for training
D．sleeping up to 15 hours a day
D[A、B、C都在原文中有体现，而D项明显未提及。]
B
Many a diehard online shopper stayed up until 2 am on Sunday，looking through the Internet
to buy products being sold at half price before they could be snapped up by other shoppers. Tens of millions of the Internet users were crazy to take advantage of the half-price promotion，started by the e-commerce giant Alibaba Group on Sunday，Nov. 11，which is kn own as Singles’ Day in China，and is the Chinese answer to Cyber Monday in the United States.
By 7 pm on Sunday，14.1 billion yuan’s worth of sales was made on tmall. com and taobao. com. That could make Singles’Day the biggest e-commerce sales day on record. The research company comScore said US online retailers (零售商) saw $ 1.25 billion of sales during last year’s Cyber Monday，the day after Thanksgiving weekend and the busiest day for online retailers as US shoppers start to prepare for Christmas.
Singles’Day originated with university students，and was later adopted by e-commerce companies as a promotional opportunity. E-commerce companies，including Jingdong Mall and Amazon China，also took part in the promotion.“In the past，people only shopped online occasionally，but now，online shopping is a lifestyle embraced by many，” said Zhang Yong，Tmall president.
Alibaba began to hold Singles’Day promotions in 2009，and last year，its sales totaled 5.2 billion yuan.“I don’t know whether we would lose money，but I don’t think we could earn much on this day by selling goods at half price，” said Hao Hongfeng，chairman of Beijing Jiuxian E-Commerce，a liquor retailer in Beijing who took part in the event. He said it is a good opportunity for online retailers to get their names known.
解题导语光棍节给众多网络商家带来了巨大的商机。淘宝、京东和亚马逊等网络商家都利用这一天进行商品促销。
5．Who first introduced Singles’Day to the public?
A．Researchers in comScore.
B．The online shoppers.
C．Some college students.
D．The online retailers.
C[细节理解题。根据第三段第一句中的“Singles’Day originated with university students”可知，光棍节是由大学生发起的，故C项正确。]
6．Why were the online retailers so active in the promotion?
A．To sell more products.
B．To make a lot more money.
C．To make more business friends through the event.
D．To make their names known to more people.
D[细节理解题。根据最后一段的最后一句可知，网络零售商的主要目的是推广他们的品牌，故D项正确。]
7．What’s the secret behind the success of this promotion?
A．The quality of the products.
B．The favorable price.
C．The fame of the retailers.
D．The after-sales service.
B[细节理解题。根据第一段第二句可知B项正确。]
8．Which title do you think is more suitable for this article?
A．Chinese Shopping Style
B．The Origin of Singles’Day
C．A Craze for Online Promotion
D．Online Purchasing Power
C[主旨大意题。本文主要介绍了光棍节给网络商家带来的巨大商机，故C项作本文的标题更合适。]
Ⅴ.阅读下面材料，在空白处填入适当的内容(不多于3个单词)或括号内单词的正确形式。
Mary：I just c an’t believe how quickly your brother’s 1 (ill)took over.
Tim： 2 can I. Just last month，we were on a picnic together 3 he was fine.
Mary：How can someone die 4 a disease so quickly?
Tim：Cancer is a 5 (power) disease. People can die from it almost without warning.
Mary：It’s ha rd 6 (imagine) our lives without him. I saw him almost every day.
Tim：I’m really worried about my family，7 (especial) my mother.
Mary：I’m just going to try to be th ere for your family as much as possible. It’s going to be the hardest for Christine. She and Dennis were childhood sweethearts.
Tim：My brother and I shared all the same hopes and dreams. He can’t be 8 (go). He just can’t be!
Mary：We are just never ready when someone young dies. Dennis was only thirty-four.
Tim：Just before he got sick，we were talking about going into business together.
Mary：Life 9 be so unkind.
Tim：This is the 10 (sad) day of my life.
答案 1.illness 2.Neither/Nor 3.and 4.from
5．powerful 6.to imagine7.especially8.gone9.can
10．saddest
B(自主选做)
(时间：45分钟满分：100分)
Ⅰ.完形填空
I am anything but adventurous. So，when I actually 1 the courage to learn driving and，even more 2 ，passed the test，I fancied being a free spirit at last.
I mistakenly thought I would discover new roads and 3 to the farthest horizons.But，gathering the courage to try new highways was next to 4 for me.The time I tried，I got hopelessly 5 and found myself going round in circles.When I eventually found the way home，I 6 this was the end of the adventurous life.I 7 the known routes.When a friend 8 me to make the most of weekend when the traffic was 9 to make new discoveries，I 10 at her with horror.Was I going to 11 a perfectly good weekend to raise my blood pressure or was I going to spend it doing as little as possible？12 ，I chose the latter option.
After some years of battling the Sharjah-Dubai 13 ，I told myself it wasn’t worth 14 my peace of mind.Now I had the Metro，buses and 15 to choose from.Taking taxi was one of the best 16 I have made from a traffic point of view.There was an unbelievable sense of lightness 17 I jumped into a taxi，taken to my destination without being worried.
All one has to do is give directions.I am good at that.Giving directions，I mean.And I am very 18 when I issue these，with no effect on the part of the person driving.As soon as I sit inside，I start the description of the 19 to be taken in great detail so as to 20 the possibility of being taken for a ride.
解题导语作者是一个不喜欢冒险的人，因此他在选择交通方式上很谨慎，不会让自己
做冒险的事情。
1．A.kept up B．picked up
C．broke up D．put up
B[第一句说作者是决不冒险的人，因此这里表示他鼓足勇气学了开车。pick up可表示“增强”。]
2．A.surprisingly B．enthusiastically
C．importantly D．dramatically
A[这么害怕冒险的人，竟然通过了驾驶考试，这让他感到吃惊。]
3．A.wander B．spread
C．drive D．get
C[通过驾驶考试就想开车到比较远的地方，因此该空应选drive“开车，驾驶”。] 4．https://www.wendangku.net/doc/e19144404.html,eful B．impossible
C．practical D．invisible
B[下文作者的经历说明，鼓足勇气尝试走新的公路对作者来说几乎是不可能的。] 5．A.amazed B．puzzled
C．lost D．touched
C[本句中的“going round in circles”说明，作者迷路了。]
6．A.refused B．replied
C．hoped D．vowed
D[因为迷路，所以最终找到回家的路时，作者发誓这是最后的冒险行动。]
7．A.stuck to B．referred to
C．added to D．reached to
A[上文中的“this was the end of the adventurous life”暗示着作者以后只走自己熟悉的路。stick to“遵守，坚持”。]
8．A.persuaded B．ordered
C．suggested D．advised
D[下文表明，作者没有接受朋友的建议，故排除A项，C项不能接不定式，order语气太强硬。故选D项。]
9．A.heavy B．light
C．slow D．safe
B[因为是周末，路上的车辆少，因此该空填light“少量的，程度轻的”。]
10．A.glared B．glanced
C．stared D．peered
C[本句中的“with horror”暗示作者听到这个建议时感到不能接受，不可思议地盯着对方。glance at“匆匆一看，一瞥”；glare at“怒目而视”；stare at“盯着看，凝视”；peer at“仔细看，端详”。根据语境可知选C。]
11．https://www.wendangku.net/doc/e19144404.html,e B．spare
C．devote D．waste
D[本句中的“to raise my blood pressure”是结果状语，作者不想浪费好好的周末时间，结果使自己血压升高。]
12．A.In short B．Of course
C．In case D．Of all
B[当然，作者选择了后者。]
13．A.system B．atmosphere
C．society D．traffic
D[下文中的“the Metro，buses”指交通方式，因此选traffic。]
14．A.disturbing B．restoring
C．reserving D．weighing
A[从下文作者选择乘出租车来看，作者认为交通的问题不值得打扰他头脑安宁。disturb表示“打扰”；restore“恢复”；reserve“预订”；weigh“权衡，认真考虑”。根据语境可知选A。]
15．A.cars B．cabs
C．trucks D．trains
B[下文中的“I jumped into a taxi”说明，这里指包含出租车在内的三种交通方式。cab“出租车”，符合语境。]
16．A.dreams B．discoveries
C．challenges D．choices
D[此处指乘出租车是最好的交通选择之一。]
17．A.until B．while
C．before D．when
D[依据下文的准确地告诉出租车司机目的地可知，当作者坐上出租车时，便有了一种令人难以置信的轻松感。由于“jump”是短暂性动词，故选D项。]
18．A.accurate B．ignorant
C．stubborn D．considerate
A[上文中的“I am good at that”说明作者能准确地说出要去的地方的位置。]
19．A.map B．design
C．route D．course
C[作者向司机师傅描述要走的路线，故选route“路线”。]
20．A.increase B．evaluate
C．extend D．minimize
D[作者详细地描述要走的路线，为了减少被欺骗的可能性。minimize“把……减至最小量”，符合语境。increase“增加”；evaluate“评价”；extend“延伸”。句中的“being taken for a ride”表示“被欺骗”。]
Ⅱ.阅读理解
More than one in four children alive in Britain today will celebrate their 100th birthday，official figures showed. The special figures show a huge social change，with today’s childr en likely to survive far longer than their parents or grandparents. Of the 12.4 million children aged 16 and under，3. 3 million (27%)will become someone who is a hundred years old or older. In a class of 30 children，eight can live to be 100. And the rest of the children are likely to get to an old age，even though they will not make it to three figures.
Experts warned that children may live to 100，but that they will not get their state pension until they are 70 or beyond. The state pension age is rising to 66 for both men and women by 2020，and the Government has warned it will continue to rise. Laith Khalaf，a pension expert，said，“Living to an old age is lucky if you can afford it，but a nuisance if you can’t. Those without enough savings will be depending on the state pension which will be changed.”
It also increases the possibility of millions of people surviving until their 100th birthday with a poor quality of life because of poor health and little https://www.wendangku.net/doc/e19144404.html,lions of older people have no pensions，no savings and no plans about how they are going to pay for their retirement other than
to carry on working. If the older population demands more resources，then they have to come from their own wealth or the government.
Laith said，“Millions of people will be spending over a third of their lives in retirement. It is high time that we reformed the state pension system. We want to make it fair for future gener ation.”
解题导语官方数据表明，现在的英国儿童会比他们的长辈活得更久。令人担心的是，这将会给政府带来巨大的养老负担。
1. From the first paragraph we can learn that ．
A．today’s children probably live longer than their parents
B．few of British children are expected to live to an old age
C．more than 30% of children aged 16 can live to be 100
D．20% of British children will celebrate their 100th birthday.
A[考查细节理解。根据文章第一段的第二句“The special figures show a huge social change，with today’s children likely to survive far longer than their parents or grandparents”可知，现在的英国儿童可能会比他们的长辈活得更久，故选A。]
2．What kind of life will people living to 100 probably face?
A．A high quality of life because of the development of technology.
B．A low quality of life because of bad health and limited money.
C．A high quality of life because of the increase in food price.
D．A low quality of life because of the present government.
B[考查细节理解。根据第三段的第一句“It also increases the possibility of millions of people surviving until their 100th birthday with a poor quality of life because of poor health and little money”可知，活到100岁的人可能会面临因身体差、资金有限而造成生活质量降低的问题，即B项正确。]
3．Why should the government at present reform the state pension system?
A．The present pension system isn’t quite useful.
B．People nowadays don’t need the pension at all.
C．More and more people ask the government to do so.
D．The present pension system is unfair for future generation.
D[考查细节理解。根据第四段的最后一句“We want to make it fair for future generation”可知，目前的国家养老金制度对于后代来说是不公平的，因此政府要改革国家养老金制度，故D项正确。]
4．What can be inferred from the text?
A．The retirement age will be raised to 70 or beyond.
B．The government will provide job chances for the retired.
C．The state pension age for men is different from that for women.
D．It will increase the government’s pressure if more children live to 100.
D[考查推理判断。根据第三段的最后一句“If the older population demands more resources，then they have to come from their own wealth or the government”可知，如果人活得更久，就会需要更多的资源，这无疑会增加政府的负担，即D项正确。]
Ⅲ.任务型阅读
We often close ourselves off when painful events happen in our lives.Instead of letting the world soften us，we let it drive us deeper into ourselves.We try to ignore the hurt and pain，but we can’t hide from ourselves.
1
The items listed below are four tips you can open your heart more fully and completely.
1．Breathe into pain
Whenever a painful situation arises in your life，try to face it instead of running away.
2 ．When the sadness strikes，take a deep breath and accept it.By using our breath we soften our experiences and allow more newness.
2． 3
We’re often confused at the next step to take.Actually，we can try a new decision making process.To start this process，we may ask，“Heart，what decision should I make here？What action feels the most right？”See what comes up，then put it into practice and evaluate the outcome.
3．Spend time alone
For most of our lives we’re surrounded by people：our friends，family members，and strangers. 4 When you spend time in solitude(孤独)，you’re free from the influences of other people.It might be painful at first，but eventually you’ll add a whole new layer of depth and understanding into your life.
4．Get outside of yourself
5 But in reality，th ey actually work hand-in-hand.After you’ve explored the depths of yourself，you come away with a new understanding.
Now，it’s tim e to share that not through telling others，but through being with others.
A．Have a light heart
B．Ask your heart what it wants
C．Is there anything I’m hiding from myself?
D．How often do we really spend time alone?
E．This may seem a little contradictory to the last tip.
F．We should open our hearts and take action to heal the wounds.
G．When we run away from sadness，it gets stronger and more real.
答案1～5FGBDE
九年级数学课时作业本
九年级数学课时作业本 一、填空题 1．用频率来估计概率的值，得到的只是______，但随实验的次数增多，频率值与实际概率值的差会越来越趋近于______，此时对这个事件发生概率值估计的准确性也就越大． 2．某单位共有30名员工，现有6张音乐会门票，领导决定分给6名员工，为了公平起见，他将员工们按1～30进行编号，用计算器随机产生______～______之间的整数，随机产生的______个整数对应的编号去听音乐会． 3．为了解某城市的空气质量，小明由于时间的限制，只随机记录了一年中73天空气质量情况，其中空气质量为优的有60天，请你估计该城市一年中空气质量为优的有______天．4．利用计算器产生1～5的随机数(整数)，连续两次随机数相同的概率是______． 二、选择题 5．某口袋放有编号1～6的6个球，先从中摸出一球，将它放回口袋中后，再摸一次，两次摸到的球相同的概率是( ) A．B．C．D． 6．某科研小组，为了考查某河流野生鱼的数量，从中捕捞200条，作上标记后，放回河里，经过一段时间，再从中捕捞300条，发现有标记的鱼有15条，则估计该河流中有野生鱼( ) A．8000条B．4000条C．2000条D．1000条 三、解答题 7．在一个不透明的口袋里装有只有颜色不同的黑、白两种颜色的球共20只，某学习小组做摸球实验，将球搅匀后从中随机摸出一个球记下颜色，再把它放回袋中，不断重复．下表是活动进行中的一组统计数据： 摸球的次数n 100 150 200 500 800 1000 摸到白球的次数m 58 96 116 295 484 601 摸到白球的频率 0.58 0.64 0.58 0.59 0.605 0.601 (1)请估计：当n很大时，摸到白球的频率将会接近______； (2)假如你去摸一次，你摸到白球的概率是______，摸到黑球的概率是______； (3)试估算口袋中黑、白两种颜色的球各有多少只? (4)解决了上面的问题，小明同学猛然顿悟，过去一个悬而未决的问题有办法了．这个问题是：在一个不透明的口袋里装有若干个白球，在不允许将球倒出来数的情况下，如何估计白球的个数(可以借助其他工具及用品)?请你应用统计与概率的思想和方法解决这个问题，写出解决这个问题的主要步骤及估算方法． 8．某学校有50位女教师，但不知其校男教师的人数，一位同学为了弄清该校男教师的人数，他对每天进校时的第一位老师的性别进行了记录，他一共记录了200次，记录到女教师有80次．你能根据这位同学的记录估计出该校男教师的人数吗?请说明理由． 综合、运用、诊断 一、填空题 9．均匀的正四面体各面分别标有1，2，3，4四个数字，同时抛掷两个这样的四面体，它们着地一面数字相同的概率是______．如果没有正四面体，设计一个模拟实验用来替代此实验：______________________________．
2018-2019学年九年级化学下册 第九章 现代生活与化学 9.3 化学能的利用课时作业(二十二)
第九章9.3 化学能的利用 建议用时：15分钟 一、选择题 1．xx·贵港下列关于燃料的说法中，正确的是( ) A．石油是纯净物 B．煤、石油、天然气和酒精都是化石燃料 C．煤和石油的燃烧会造成空气污染 D．只有通过燃料的燃烧才能获得热能 2．xx·天津下列叙述正确的是( ) A．化学反应过程中都会发生放热现象 B．在化学反应中只有燃烧反应才能放出热量 C．化学反应伴随着能量变化 D．人类利用的能量都是通过化学反应获得的 3．下列不属于新能源开发和利用的是( ) 图K－22－1 4．xx·淮安如图K－22－2是我国《可再生资源法》倡导的碳资源的转化与循环利用示意图。下列做法与该图体现的理念不符的是( )
图K－22－2 A．将秸秆加工转化为酒精燃料 B．二氧化碳作为原料生产尿素 C．过度开采煤、石油作为燃料 D．将石油精炼，制备合成材料 5．下列关于能量转化的描述中不正确的是( ) A．发电机工作：机械能——电能 B．蓄电池放电：电能——化学能 C．萤火虫发光：生物质能——光能 D．内燃机工作：化学能——内能——机械能 6．下列反应中，由化学能转化为电能的是( ) A．燃料燃烧 B．给蓄电池充电 C．光合作用 D．干电池放电 二、填空题 7．汽车方便了人们的出行，氢能源汽车备受人们关注。 (1)目前，多数汽车使用的燃料是汽油或柴油。为减少汽车尾气对空气的污染，可采取使用(或安装)______________装置使有害气体转化为无害物质等措施。 (2)氢能源汽车在行驶过程中的能量转化是从________能开始，最终转化为________能。氢能源有本身无毒、原料来源广、可再生、________________________(填一点)等优点。 (3)某些汽车轮胎是由合成材料和金属材料复合而成。 其中使用的合成材料，主要利用它的________(填字母)等性能。
2019_2020学年高中语文课时作业10短文三篇新人教版必修4
课时作业10 短文三篇 [基础演练] 1．下列词语中加点字的注音全部正确的一组是( ) A．短暂．(zàn) 垂暮．(mò)丰盈．(yíng)症．(zhēng)结 B．囊．(náng)括苇．(wéi)草钻．(zuān)探悄．(qiǎo)然 C．手帕．(pà) 牲．(shēng)畜蒙．(méng)混拮据．(jū) D．器皿．(mǐn) 平衡．(héng) 漂．(piǎo)白遂．(suí)意 解析：A项，“暮”读音为“mù”；B项，“苇”读音为“wěi”；D项，“遂”读音为“suì”。 答案：C 2．下列各组中有错别字的一项是( ) A．赋予畜牲躁动风和日丽 B．领略脆弱丰盈有张有弛 C．厚赐囊括阐释枯燥无味 D．称诵追溯垂暮稍纵即逝 解析：“称诵”应为“称颂”。 答案：D 3．依次填入下面横线处的词语，最恰当的一组是( ) ①而风和日丽的时候，我却不愿意去“度”，这时我是在慢慢赏玩、美好的时光。 ②我们的生命受到自然的厚赐，它是优越无比的，我们觉得不堪生之重压或白白虚度此生，那也只能怪我们自己。 ③然而，纵使宇宙毁灭了他，人却要比致他于死命的东西更高贵得多。 A．领略如果仍然 B．领会如果依然 C．领略虽然依然 D．领会虽然仍然 解析：“风和日丽”的“美好的时光”自然要用“领略”，排除B、D两项；②的句间关系是假设，排除C项。 答案：A 4．下列各句中加点的虚词，使用正确的一项是( ) A．然而，我不能想像人没有思想，那就成了一块顽石和．一头畜生了。
B．尤其 ．．在此刻，我眼看生命的时光无多，我就愈想增加生命的分量。 C．我爱魂牵梦绕的故乡，不仅爱父老乡亲之间那种浓浓的亲情，而且也爱她的贫困， 或者 ．．还爱她的不幸。 D．他的记忆力是那样惊人，以致 ．．连童年时与好友杨晨初次交往的细节都说得一清二楚。 解析：A项中“和”表并列关系，当为“或者”；C项中当用表递进的“甚至”或“甚或”等；D项中“以致”与“以至”基本用法相同，但前者多用于不好的或说话人不希望的结果。 答案：B 5．下列各句中加点的成语使用恰当的一句是( ) A．你们对此人一无所知 ．．．．。 ．．．．，但我们对他的底细一目了然 B．下乡前两天，党委又组织我们学习党的有关文件，使大家明确党的农业政策，做到 胸有成竹 ．．．．。 C．我们要掌握先进的科学技术，在天上翻云覆雨 ．．．．，让自然听我们使唤。 D．我们应该清醒地认识到，反走私工作依然任重道远 ．．．．。 解析：A项中“一无所知”正确，“一目了然”是“一眼就可看清楚”，应改为“了如指掌”；B项“胸有成竹”是“做事之前已经有了通盘的考虑”，从句意看，应该改为“心中有数”；C项“翻云覆雨”是“反复无常或玩弄手段”，与句意不合。 答案：D 6．下列各句没有语病的一句是( ) A．某市最近出台并实施了“交通事故现场快速处置法”，大大缓解了事故现场对道路通行的影响和拥堵，收到了明显的成效。 B．规范、端正、整洁地书写汉字，是学生终身学习能力的基础，要养成良好的写字习惯，具有熟练的写字技能，具有初步的书法欣赏能力是现代中国公民应有的基本素养。 C．在生活中，懊悔不仅能消耗我们的精神，磨灭我们的意志，而且也能促使我们反思，帮助我们总结。 D．为完成2006年世界锦标赛和亚运会的比赛任务，积极备战2008年北京奥运会，经国家女排队委会研究，国家体育总局排球运动管理中心在湖南郴州体育训练基地组织国家女排集训。 解析：A项搭配不当，“缓解”与“影响”动宾搭配不当；B项句式杂糅，删掉“要养成”、两个“具有”即可；C项关联词语使用错误，“不仅”改为“既”，删掉“而且”。 答案：D 7．依次填入下面一段文字中横线处的语句，与上下文衔接最恰当的一组是( ) 时间的力量，理应在大地上留下痕迹；岁月的巨轮，理应在车道间辗碎凹凸。没有废墟就无所谓昨天，。废墟是课本，；废墟是过程，人生就是从旧的
Unit 10 课时作业
( )1.If you _____ to the party, you’ll have a great time A. will go B. went C. go D. going ( )2．I ____ her the answer if she ____me. A. can tell, will ask B. will tell, will ask C. would tell, ask D. will tell, asks ( )3. – What are you going to do tomorrow? --We’ll go to the library tomorrow if it ___. A. isn’t rain B. rain C. won’t rain D. doesn’t rain ( )4. What will you do if you _____ to th e old folk’s home visit? A. go B. went C.going D. will go ( )5. If I eat ____ food, I’ll be very fat. A. too many B. many too C. too much D. much too ( )6. I’ll give the book to him if he ___ here next Sunday. A. will come B. comes C. is coming D. came ( )7. There ____an English film in our school tomorrow. A. is going to have B. will have C. is going to be D. has ( )8. We’ll go to the Great Wall ________ it doesn’t rain this Saturday. A. when B. if C. until D. because ( )9. Don’t ________ sportswear to the party. A. put on B. wear C. wearing D. dress ( )10. I’m going to ________ time with my parents this vacation. A. take B. have C. spend D. go ( )11. Jim asked me ________ him with his English. A. help B. helping C. helped D. to help ( )12. — What are you going to do tomorrow? — ________. A. Nothing much B. Much nothing C. Not anything D. No thing ( )13. They didn’t go to bed ________ they finished their home work. A. until B. because C. when D. if ( )14. The teacher told her students ________ so late on weekends. A. not get up B. don’t get up C. to not get up D. not to get up ( )15. —I don’t know if my mother ________ tomorrow. — If she ________, I’ll meet her at the train station. A. will come; comes B. comes; will come C. will come; will come D. comes; comes 二、根据句意及首字母写出恰当的单词： 1. If I go to the party in a t _________ , it will be too expensive . 2. My parents o _______________ a big birthday party for me last year . 3. Kate looks so u ________-. Nobody knows what happened . 4. Everyone is looking forward to holding the sports m ________ next Tuesday . 5. I don’t know what to do about my family problem .Can you give me some a ____________ ?
九年级下册化学课堂作业的答案
九年级下册化学课堂作业的答案 导语】这篇关于九年级下册化学课堂作业的答案的文章，是为大家整理的，希望对大家有所帮助！ 第八单元金属和金属材料 课题１金属材料 １．Ｃ２．Ａ３．Ｃ４．Ｂ５．Ｃ６．Ｄ ７．Ｃ８．Ｂ９．Ｃ１０．Ｄ １１．硬度增大（熔点降低或其他合理答 案） １２．延展导电导热 １３．（１）铁汞钛（２）ＣａＺｎ １４．（１）黑色银白色 （２）活性炭Ｃｕ １５．铝合金密度小（或质轻）、不易生锈 （或耐腐蚀） １６．（１）铝（２）导电性、延展性、导热性 （３）②④ 课题２金属的化学性质 １．Ｂ２．Ｄ３．Ｃ４．Ｃ５．Ｄ６．Ｄ ７．Ｄ８．Ｃ ９．（１）氧气水加速铁粉生锈，使之 更快地放出热量 （２）Ｍｎ＋ＦｅＳＯ４ＭｎＳＯ４＋Ｆｅ Ｍｇ＞Ｍｎ＞Ｆｅ＞Ｃｕ
１０．（１）①④①④①②③⑤（２）有 气泡冒出２Ａｌ＋６ＨＣｌ２ＡｌＣｌ３＋３Ｈ２↑ １１．（１）ＦｅＣｌ２ＨＣｌＣｕＳＯ４（或 Ｈ２ＳＯ４）ＦｅＳＯ４（从左自右，其他合理答案 均可） （２）用磁铁吸引铁屑用稀盐酸（或稀 硫酸）将铁屑溶解 １２．（１）Ａ （２）Ｆｅ＋ＣｕＳＯ４ＦｅＳＯ４＋Ｃｕ （３）将铜片插入硝酸银溶液中红色固 体表面有银白色固体生成铜的活动性大 于银 １３．（１）Ｃｕ－Ｚｎ（２）０．２３５％ 课题３金属资源的利用和保护 １．Ａ２．Ｃ３．Ａ４．Ｂ５．Ｄ６．Ｃ ７．Ｄ ８．（１）作为燃料提高炉温生成还原剂 ＣＯ（２）Ｃ＋Ｏ２ 高温 ＣＯ２ＣＯ２＋Ｃ 高温 ２ＣＯ（３）隔绝氧气和水（４）Ｆｅ２Ｏ３＋ ３Ｈ２ＳＯ４Ｆｅ２（ＳＯ４）３＋３Ｈ２Ｏ（５）铁与酸反应生成易被人体吸收的亚铁化合物
９．Ｃ＋Ｏ２ 高温 ＣＯ２ ２ 人教版化学九年级（下） １０．（１）化合反应（２）Ｈ２ＯＣ （３）ＣｕＯ＋Ｈ２ △ Ｃｕ＋Ｈ２Ｏ １１．（１）铁架台酒精灯 （２）Ⅱ （３）Ｆｅ２Ｏ３＋３ＣＯ 高温 ２Ｆｅ＋３ＣＯ２ Ｃａ（ＯＨ）２＋ＣＯ２ＣａＣＯ３↓＋Ｈ２Ｏ红色粉末变为黑色澄清石灰水变浑浊 （４）没有尾气处理装置 １２．（１）２８５０ｔ（２）４６３０ｔ 第八单元综合练习 １．Ｂ２．Ｂ３．Ａ４．Ｃ５．Ｄ６．Ｄ ７．Ａ８．Ａ９．Ａ１０．Ｄ１１．Ｂ１２．Ａ １３．Ｂ１４．Ａ１５．Ａ １６．能导电 １７．（１）混合物（２）氧气水（３）防
九年级下册语文课时作业本答案
九年级下册语文课时作业本答案 2、C 3、经济、法律等专业书籍当然很重要，但审美趣味和精神意志的培养同样不能忽略，因此对 志向远大者来说，我建议要再读一点支学书。 4、（1）“ 全球”移到“ 社会各界”前；“ 文明”前加“ 宣传”。 （2）略 5、示例：平凡是泥土，孕育着收获，只要你肯耕耘 6、（1）人不寐将军白发征夫泪 （2）猿鸣三声泪沾裳 （3）山重水复疑无路柳暗花明又一村 （4）万方多难此登临 7、（1）中秋 （2）教师节◆略 二、阅读理解 （一）
8、因为人的精神和思想是一个有限的空间，一旦被虚伪、凶残、自私、冷酷等丑恶内容占 据，善良、纯真、博爱、热情等美好的精神和思想就无法容身，人性就会变得丑恶。 （意思对即可） 9、因为我们的人生之瓶里，装满着欲望和为之奋斗不息的操劳，塞满了无穷无尽的浮躁与烦 恼。没有美好和宁静的精神世界，因此也无法体会生活的快乐。（意思对即可） 10、大师倒茶开导困于苦恼的和尚；居里夫妇为了怕人打扰不添置家具；钱钟书甘于寂寞， 淡泊名利。 11、提示：装着事业、志向、探索等高尚和纯粹的人生之液。第二问言之有理即可。 （二） 12、B 13、B
14、（1）徐君已经死了，（宝剑）还要给谁呢？ （2）我开始在心里已经答应（把剑）送给他了，怎么能因为（他）死了就背叛我的内 心呢？ 15、提示：季札具有一诺千金的品质。 （三） 16、“ 数”字写出了女主人公因深锁庭院而百无聊赖、万般愁闷的心情，表现了女主人公叹 怜这无人观赏、转眼即逝的春花的情怀。 17、该句洗练而巧妙地描绘了女主人公在春光烂漫中的冷寂、孤凄的境遇，含蓄地刻画出她 那沉浸在痛苦中的凝神伫立的神态。
课时作业
化学能转化为电能 第1学时总共学时 一、填空题 1.将锌片和铜片插入某种电解质溶液,锌片和铜片用导线相连,形成原电池装置。 (1)若电解质溶液是稀硫酸,则发生氧化反应的是极(“锌”、“铜”),铜极发生的反应是 ,该电池的总反应离子方程式是。 (2)若电解质溶液是硫酸铜溶液,在导线中电子是由极流向极,铜极上反应的电极反应方程式是 ,该电池总反应离子方程式是。 2.原电池的工作原理 原电池是将能转化为能的一种装置，电子流出的一极称为极，该极发生反应，电子流入的一极叫极，该极发生反应。原电池中电子流动的方向为：从极经外电路（通过电线）流向极。 3.构成原电池的条件 （1）具有活泼性不同的两个电极，较活泼金属作极，较不活泼金属或能导电的非金属单质（如石墨等）作极。 （2）具有电解质溶液（一般与活泼性强的电极发生氧化还原反应） （3）形成（或在溶液中接触） （4）原电池反应是的氧化还原反应。 第2课时 1.下列关于实验现象的描述不正确的是（） A.铜锌组成的原电池中电子是从锌经过导线流向铜 B.把铜片和铁片紧靠在一起浸入稀硫酸中,铜片表面出现气泡 C.把铜片插入FeCl 3 溶液中,在铜片表面出现一层铁 D.把锌片放入盛有盐酸的试管中,加入几滴CuCl 2 溶液,气泡放出速率加快 2.实验室中欲制氢气,最好的方法是（） A.纯锌与稀硫酸反应 B.纯锌与浓硫酸反应 C.纯锌与稀盐酸反应 D.粗锌(含铅、铜杂质)与稀硫酸反应 3.某原电池总反应离子方程式为2Fe3+ + Fe = 3Fe2+能实现该反应的原电池是（） A.正极为铜，负极为铁，电解质溶液为FeCl 3 溶液 B.正极为铜，负极为铁，电解质溶液为Fe(NO 3 ) 2 溶液 C.正极为铁，负极为锌，电解质溶液为Fe 2 (SO 4 ) 3 D.正极为银，负极为铁，电解质溶液为CuSO 4 4.由铜、锌和稀硫酸组成的原电池工作时，电解质溶液的酸性( ) A．不变 B．先变小，后变大 C．逐渐变大 D．逐渐变小
人教版高中英语必修三(广东卷)课时作业10
高中英语学习材料 madeofjingetieji 课时作业(十)Using Language Ⅰ.单词拼写 1．She lives________(附近) so we needn't take a taxi. 2．The rumours of an attack were later________(证实)． 3．The________(距离) between the two villages is two kilometres. 4．According to the Chinese________(传统)，we serve the food first and then the soup. 5．Lin Tao，who is one of my old________(校友)，has been promoted to captain. 6．Our school is________(大约) 8 miles away from the station. 7．Pour the________(混合物) of flour and eggs into the pan slowly and then bake on a low heat. 8．Mr.Smith was________(高兴的) that his father was being taken care of in the Home of the Aged. 9．What________(留下印象) me most after visiting the school was that the students were polite and intelligent. 10．His father is a billionaire，so he is very________(富有的)． Ⅱ.阅读理解 A (2013·清远高一月考)The Canadian red and white maple leaf(枫叶) flag is officially called the National Flag of Canada. The Canadian flag shows a stylized red maple leaf with 11 points on a white background, with red borders down each side. The Canadian flag is twice as long as it is wide. The white square containing the red maple leaf is the same width as the flag. The red and the white used in the National Flag of Canada were proclaimed the official colors of Canada in 1921 by King George Ⅴ. Although the maple leaf did not have its official status as a symbol of Canada until the announcement of the national flag in 1965, it had historically been used as a Canadian symbol，and was used in 1860 in decorations for the visit of the Prince of Wales to Canada. The 11
2020年人教版九年级化学上册课时作业1 走进化学世界%28含解析%29
课时作业1走进化学世界 夯实基础 1.(2020·宁夏中考)下列不属于化学学科研究领域的是() A.合成新药 B.开发新能源 C.研究物体运动 D.研制新型材料 2.(2020·安徽合肥包河区二模)中华文明历史悠久,下列工艺过程,主要涉及化学变化的是() 3.(2020·湖南株洲中考改编)下列有关化学实验操作的图示中正确的是() 4.(2020·湖南湘西州中考)下列实验操作中,不正确的是() 1
5.(2020·江苏连云港中考)下列化学品标志与化学试剂对应错误的是() 6.(2020·四川成都中考)实验时发生意外需及时处理。下列处理方法错误的是() A.过滤液体滤纸被戳破——把玻璃棒靠在三层滤纸处 B.蒸发时食盐四处飞溅——撤去酒精灯并不断搅拌 C.触碰热试管手被烫伤——冷水冲洗后涂抹烫伤膏 D.氢氧化钠沾到皮肤上——大量水冲洗后涂硼酸溶液 7.(2020·浙江台州中考)七氟丙烷(C3HF7)灭火剂容易汽化不留残渣,适用于电器、精密仪器、图书档 案等灭火,根据上述信息可以推测七氟丙烷具有的性质是() A.导电性 B.腐蚀性 C.不助燃 D.沸点高 提高能力 1.(2020·黑龙江龙东中考)下列各图所示变化中,属于物理变化的是() 2.(2020·山东东营中考)在使用酒精灯的过程中,对下列做法的解释不合理的是() A.用酒精灯外焰给物品加热,原因是酒精与空气充分接触 B.用火柴点燃酒精灯,原因是火柴提高了酒精的着火点 2
C.用湿抹布盖灭失火的酒精灯,原因是使可燃物与空气隔绝 D.将灯芯拨得松散使酒精灯燃烧更旺,原因是增大了可燃物与空气的接触面积 3.(2020·山东德州中考)物质的性质决定其用途。下列物质的性质和用途没有直接联系的是() 创新拓展 (2020·湖南怀化中考)中华文化博大精深。下列古诗所述一定发生化学变化的是() A.飞流直下三千尺,疑是银河落九天 B.春蚕到死丝方尽,蜡炬成灰泪始干 C.夜来风雨声,花落知多少 D.床前明月光,疑是地上霜 课时作业1走进化学世界 夯实基础 1.C 3