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2017徐汇区上海中学高三上学期10月周测试卷

2017徐汇区上海中学高三上学期10月周测试卷
2017徐汇区上海中学高三上学期10月周测试卷

上海中学高三周考()

II. Grammar (10’)

Directions:After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

A great deal of attention (1)_________ (pay) today to the so-called digital divide--the division of the world into the info(information) rich and the info poor at present. And that divide does exist today. My wife and I lectured about this looming danger twenty years ago. What was(2)_______ (visible) then, however, were the new, positive forces that work against the digital divide. There are reasons to be optimistic.

There are technological reasons to hope the digital divide will narrow. (3)______ the Internet becomes more and more commercialized, it is in the interest of business to universalize access-after all, the more people online, the more potential customers there are. More and more governments, afraid their countries will be left behind, want to spread Internet access. Within the next decade or two, one to two billion people on the planet (4)_______(net) together. As a result, I now believe the digital divide will narrow (5)______ ______widen in the years ahead. And that is very good news because the Internet(6)______well be the most powerful tool for combating world poverty that we've ever had.

Of course, the use of the Internet isn't the only way to defeat poverty. And the Internet is not the only tool we have. But it has enormous potential.

(7)_________(take)advantage of this tool, some impoverished countries will have to get over their outdated anti-colonial prejudices with respect to foreign investment. Countries(8)________ still think foreign investment is an invasion of their sovereignty might well study the history of infrastructure(the basic structural foundations of a society) in the United States. When the United States built(9)________industrial infrastructure, it didn't have the capital to do so. And that is(10)_______ America's Second Wave infrastructure- including roads, harbors, highways, ports and so on-were built with foreign investment.

【答案】1.is being paid 2.less visible 3.As 4.will be netted 5.rather than

6.may

7.To take

8. that

9.its 10.why

【分析】

(1).分析可知,此处应为被动语态,”today”提示为现在进行时。

(2).形容词改为比较级。

(3).As引导原因状语从句。

(4).分析可知,此处应为被动语态,” Within the next decade or two”提示为将来时。

(5).分析可知,表示转折,因此填” rather than”。

(6).分析可知,填情态动词。

(7).分析可知,应为非谓语,做目的状语。

(8).分析可知,定语从句。

(9).分析可知,代词。

(10).分析可知,表语从句,表原因。

III. Vocabulary (10’)

Directions:Complete the following passage by using the words in the box. Each word can only be used once. Do note that there is one word more than you need.

I’m a 50-something male, the father of two mostly grown girls. I’m happy to say that both my parents are

still kicking. I’m on good 1 with my brothers and sisters most of the time. I am blessed with good friends

and other relations, and tend to get on well with my co-workers. I am fortunate in so many ways, but feel like I

consistently disappoint everyone I know.

I cannot, for the life of me, give a genuine 2 . It simply doesn’t come naturally. When I try, and I do,

in order to maintain all the relationships, it feels forced, more a matter of 3 than a gift that might put wind in

the sails of someone I truly care for. I feel strongly that giving should spring from joy, or at least from a 4

desire to see the recipient enlivened by it. When I have nothing to offer in response to a job well done, everyone

loses. I feel like I’ve twisted the emotional and social development of my children, alienated (疏远) any number

of perfectly wonderful lovers, and generally kept the world at arm’s length.

After years of psychotherapy and the obsessive (强迫症) self-examination common to my generation, I

believe I know where this meanness of spirit comes from. Six kids in total, at a very tender age, there were five

younger, cuter kids standing between me and the object of our 5 . Mama was driven to 6 , to put

it mildly, by the demands placed on her, but it was the 1950s and she set a selfless and hardy example. I had

complete 7 for her difficult situation, even at the time. The fact remains, however, that, as a young child, I

needed more than I got. I 8 for my mother’s attention. I needed to know that she 9 me as more

than her helper, her strong little man. I clearly recall, at the ripe old age of 7, coming to the conclusion that I

would never get it. "That’s OK," I reckoned, "I can get by without it". "it" being her love.

You can imagine the sibling rivalry in a big family. Eventually I took haven in the written word to get away from

it. But even before I learned to read, I had realized that giving any sign of approval or encouragement to my brothers and sisters could only 10 to increase the gulf between me and my mom. Does that make sense? I can rationalize otherwise, of course, and now we’re all "one big happy family", but the damage is done. l want to be gracious and giving, but when I even think to reach into that purse, however, it’s pretty much empty.

答案D F I B K G A H C E

解析:

(1).分析可知,填名词,根据句意,填D,表达,说辞。

(2).根据句意,填名词,根据上下文,我相处不好人际关系,不能给予表扬,所以选F。

(3).分析可知,填名词,填I,强迫。

(4).分析可知,填形容词,所以选B,真心的。

(5).分析可知,填名词,所以选K,喜爱。

(6).分析可知,填名词,根据句意,填心烦意乱,所以选G

(7).分析可知,填名词,根据句意,填A,同情心。

(8).根据分析,填动词,根据句意,填渴望,所以选H。

(9).根据分析,填动词,所以选C,评价。

(10).根据分析,填动词,所以选E,提供…服务,这里有导致的意思。

IV. Cloze (15’)

Directions:For each blank in the following passage there are four words marked A,B,C and D.Fill in each blank with the word or phrase that best fits the context.

A true story of retirement planning is that your future is riding on the quality of your assumptions. Humble __1__ can be dangerous.

For example, eight years into this bull market expecting stocks to deliver as-strong returns over the next decade is an uncertain proposition many are nonetheless __2__.

Another potential __3__ assumption is that you will be able to keep working past 65. Yet the recently released 2017 Retirement Confidence Survey by the nonpartisan Employee Benefit Research Institute finds that more than half of workers say they expect to still be on the clock past age 65. By __4__, less than 15 percent of today’s retirees kept working that long.

“If you plan on working longer as a way to get by in retirement, you are going to be in trouble,” says Craig Copeland, senior research associate at EBRI. “It should be a complement to a solid savings and spending plan, not

the __5__.”

It’s simply too __6__ to assume you will indeed be able to work longer. A survey by the Transamerica Center for Retirement Studies found that nearly two-thirds of retirees left the workforce earlier than expected because they were laid off, reorganized out of a position, or due to general unhappiness with a job. Only 16 percent of retirees who __7__ the work force earlier than they expected did so because they felt they could __8__ afford to.

__9__, a new report from Prudential puts a dollar value on why your current employer may not be inclined (倾向于)to do back flips to keep an older you happy and engaged. The estimated one-year cost to a firm when an employee __10__ retirement: $50,000.

Prudential estimates that on a company-wide level, delayed retirement can __11__ overall workforce costs by 1 percent to 1.5 percent. That’s not nothing. And it goes a long way in explaining why employers may be more inclined to focus on “financial wellness” strategies to get workers ready to retire __12__ than programs to help workers delay retirement.

Fewer than one-third of employees surveyed by TCRS report their employer has some sort of “transition” program such as flexible work schedules, reduced hours or __13__ to a different role.

“Workers’ vision of retirement is changing faster than employers’ business __14__,” said Catherine Collinson, president of TCRS. That makes it ever more crucial for pre-retirees to take the steps today that will increase that __15__ they can continue to work longer, if that’s part of the plan.

1. A.pessimism B.optimism C.concern D.consideration

2. A.relying on B.casting on C.accounting on D.falling on

3. A.reliable B.possible C.flawed D.unlikely

4. A.contrary https://www.docsj.com/doc/6a9024131.html,promise https://www.docsj.com/doc/6a9024131.html,pliment D.contrast

5. A.foundation B.basement C.founding D.construction

6. A.ridiculous B.sensible C.risky D.logical

7. A.extended B.exited C.existed D.remained

8. A.economically B.mentally C.financially D.physically

9. A.However B.Therefore C.Nevertheless D.Moreover

10. A.delays B.expects C.gets D.decides

11. A.decrease B.influence C.increase D.transform

12. https://www.docsj.com/doc/6a9024131.html,ter B.sooner C.faster D.slower

13. A.shifting B.altering C.ranging D.functioning

14. A.deals B.practices C.customs D.operations

15. A.abilities B.capabilities C.chances D.outputs

【答案】1-5 BACDA 6-10 CBCDA 11-15 CBABC

解析:

(1):从下文举例可知,员工们对自己对自己退休年龄都假设到很晚,觉得自己可以工作到65岁,而事实是都会提前退休,所以这题是B optimism 乐观

(2)前面是不确定已经表示反义,所以后边定语从句应该是正义,A 指望加起来还是反义

(3)另外一个什么样的假设肯定是不太好的形容词C 有瑕疵的

(4)现实和假设的相反By contrast 固定搭配

(5)A 基础B 地下室C创办 D 建造应当把工作更长时间看作是积蓄的补足而不是基础

(6)假设自己肯定会在会工作更长时间这件事是怎么样的和第一段呼应:risky 冒险的

(7)(8)因为他们认为自己经济能力够,所以这一小部分人会比他们想的更早时间离开工作地方

(9)上下文递进所以是moreover

(10)如果一个员工推迟工作一年公司将损失这么多钱delay 联系下文对delayed employees的分析(11)1到4是代价增加

(12)很明显公司进行这个策略让这些员工更早退休

(13)这些转变包括时间减少,工作角色的转换(shift)

(14)员工对于退休的看法比老板的经营方式要快practice做名词有做法、习惯做法的意思固定搭配(15)提高他们能够工作更长时间的机会

V. Reading Comprehension

Section A

Directions: Read the following four passages. Each passage is followed by several questions or unfinished statements. For each of them there are four choices marked A, B, C and D. Choose the one that fits best according to the information given in the passage you have just read.

(A)

The Paris climate agreement finalised in December last year heralded(预示着…的到来) a new era for climate action. For the first time, the world’s nations agreed to keep global warming well below 2℃.

This is vital for climate-vulnerable nations. Fewer than 4% of countries are responsible for more than half of the world’s greenhouse gas emissions. In a study published in Nature Scientific Reports, we rev eal just how deep

this injustice runs.

Developed nations such as Australia, the United States, Canada, and European countries are essentially climate “free-riders”: causing the majority of the problems through high greenhouse gas emissions, while incurring(招致) few of the costs such as climate change’s impact on food and water. In other words, a few countries are benefiting enormously from the consumption of fossil fuels, while at the same time contributing disproportionately to the global burden of climate change.

On the flip side, there are many “ forced riders”, who are suffering from the climate change impacts despite having scarcely contributed to the problem. Many of the world’s most climate- vulnerable countries, the majority of which are African or small island states, produce a very small quantity of emissions. This is much like a

non-smoker getting cancer from second-hand smoke, while the heavy smoker is fortunate enough to smoke in good health.

The Paris agreement has been widely hailed as a positive step forward in addressing climate change for all, although the details on addressing “climate justice” can be best described as sketchy.

The goal of keeping global temperature rise “well below” 2 degree is commendable(值得称赞的) but the emissions- reduction pledges submitted by countries leading up to the Paris talks are very unlikely to deliver on this.

More than $100 billion in funding has been put on the table for supporting developing nations to reduce emissions. However, the agreement specifies that there is no formal distinction between developed and developing nations in their responsibility to cut emissions, effectively ignoring historical emissions. There is also very little detail on who will provide the funds or, importantly, who is responsible for their provision. Securing these funds, and establishing who is responsible for raising them will also be vital for the future of climate-vulnerable countries.

The most climate-vulnerable countries in the world have contributed very little to creating the global disease from which they now suffer the most. There must urgently be a meaningful mobilization(组织,动员) of the policies outlined in the agreement if we are to achieve national emissions reductions while helping the most vulnerable countries adapt to climate change.

And it is clearly up to the current generation of leaders from high-emitting nations to decide whether they want to be remembered as climate change tyrants or pioneers.

1. The author is critical of the Paris climate agreement because .

A) it is unfair to those climate-vulnerable nations

B) it aims to keep temperature rise below only

C) it is beneficial to only fewer than 4% of countries

D) it burdens developed countries with the sole responsibility

2. Why does the author compare the “forced riders” to second-hand smokers?

A) They have little responsibility for public health problems.

B) They are easily affected by unhealthy environmental conditions.

C) They have to bear consequences they are not responsible for.

D) They are unaware of the potential risks they are facing.

3. What does the author say about the $ 100 billion funding?

A) It will motivate all nations to reduce carbon emissions.

B) There is no final agreement on where it will come from.

C) There is no explanation of how the money will be spent.

D) It will effectively reduce greenhouse emissions worldwide.

4. What urgent action must be taken to realize the Paris climate agreement?

A) Encouraging developing nations to take the initiative.

B) Calling on all the nations concerned to make joint efforts.

C) Pushing the current world leaders to reach agreement.

D) Putting in effect the policies in the agreement at once.

【答案】1. A 2. C 3. B 4. D

【分析】

这篇阅读试题分析:本文讲述的是巴黎气候会议提出控制全球气温变化,提出让发展中国家为此“买单”,作者对此提出了质疑,且指出了其不足之处。

(1).细节题。根据文章第二段Fewer than 4% of countries are responsible for more than half of the world’s greenhouse gas emissions. In a study published in Nature Scientific Reports, we reveal just how deep this injustice runs.可知,故A正确。

(2).推理题。根据文章第四段Many of the world’s most climate- vulnerable countries, the majority of which are African or small island states, produce a very small quantity of emissions.可知。故C正确。

(3).细节题。根据文章第七段There is also very little detail on who will provide the funds or, importantly, who is responsible for their provision.故B正确。

(4).细节题。根据文章倒数第二段,There must urgently be a meaningful mobilization(组织,动员) of the policies outlined in the agreement if we are to achieve national emissions reductions while helping the most vulnerable countries adapt to climate change.可知。D正确。

(B)

With the coming of big data age, data science is supposed to be starved for, of which the adaption can point a profound change in corporate competitiveness. Companies, both born in digital era and traditional world are showing off their skills in data science. Therefore, it seems to have been creating a great demand for the experts of this type.

Mr Carlos Guestrin, machine learning professor from university of Washington argues that all software applications will need inbuilt intelligence within five years, making data scientists – people trained to analyze large bodies of information –key workers in this emerging “cognitive” technology economy. There are already critical applications that depend on machine learning, a subfield of data science, led by recommendation programs, fraud detection system, forecasting tools and applications for predicting customer behavior.

Many companies that born digital – particularly internet companies that have a great number of real-time customer interactions to handle – are all-in when it comes to data science. Pinterest, for intense, maintains more than 100 machine learning models that could be applied to different classed of problems, and it constantly fields requests from managers eager to use this resource to deal with their business problem.

The most important factor weighing on many traditional companies will be the high cost of launching a serious machine-learning operation. Netflix is estimated to spend $150m a year on a single application and the total bill is probably four times that once all its uses of the technology are taken into account.

Another problem for many non-technology companies is talent. Of the computer science experts who use Kaggle, only about 1,000 have deep learning skills, compared to 100,000 who can apply other machine learning techniques, says Mr Goldbloom. He adds that even some big companies of this type are often reluctant to expand their pay scales to hire the top talent in this field.

A third barrier to adapting to the coming era of “smart” applications, however, is likely to be cultural. Some companies, such as General Electric, have been building their own Silicon Valley presence to attract and develop the digital skills they will need.

Despite the obstacles, some may master this difficult transition. But companies that were built, from the beginning, with data science at their center, are likely to represent serious competition.

1. What cannot be inferred from the passage about the machine learning?

A. Machine learning operations are costly in Netflix.

B. Machine learning plays an important role in existent applications.

C. Machine learning experts are not highly paid in some non-technology companies.

D. Machine learning models are not sufficient to solve business problems in Pinterest.

2. The underlined word in the 3rd paragraph “fields” most probably means ____.

A. avoids

B. creates

C. solves

D. classifies.

3. Which one is the biggest obstacle for many traditional companies to begin a machine-learning operation?

A. High cost

B. Expert crisis.

C. Technological problems

D. Customer interactions.

【答案】D C A

【分析】

(1).推断题。根据文中的Pinterest, for intense, maintains more than 100 machine learning models that could be applied to different classed of problems, and it constantly fields requests from managers eager to use this resource to deal with their business problem,不能判断出选项D是正确的,故选D.

(2).词汇题。根据第三段maintains more than 100 machine learning models that could be applied to different classed of problems,答案为C,解决。

(3).细节题。根据文章第四段中的The most important factor weighing on many traditional companies will be the high cost of launching a serious machine-learning operation.故答案为A。

(C)

Dr. Donald Sadoway at MIT started his own battery company with the hope of changing the world’s energy future. It’s a dramatic endorsement for a technology most people think about only when their smartphone goes dark. But Sadoway isn’t alone in boasting energy storage as a missing link to a cleaner, more efficient, and more equitable energy future.

Scientists and engineers have long believed in the promise of batteries to change the world. Advanced batteries are moving out of specialized markets and creeping into the mainstream, signaling a tipping point for forward-looking technologies such as electric cars and rooftop solar panels.

The ubiquitous (无所不在的)battery has already come a long way, of course. For better or worse, batteries make possible our mobile-first lifestyles, our screen culture, our increasingly globalized world. Still, as impressive

as all this is, it may be trivial compared with what comes next. Having already enabled a communications revolution, the battery is now poised to transform just about everything else.

The wireless age is expanding to include not just our phones, tablets, and laptops, but also our cars, homes, and even whole communities. In emerging economies, rural communities are bypassing the wires and wooden poles that spread power. Instead, some in Africa and Asia are seeing their first lightbulbs illuminated by the power of sunlight stored in batteries.

Today, energy storage is a $33 billion global industry that generates nearly 100 gigawatt-hours of electricity per year. By the en d of the decade, it’s expected to be worth over $50 billion and generate 160 gigawatt-hours, enough to attract the attention of major companies that might not otherwise be interested in a decidedly pedestrian technology. Even utility companies, which have long viewed batteries and alternative forms of energy as a threat, are learning to embrace the technologies as enabling rather than disrupting.

Today’s battery breakthroughs come as the world looks to expand modern energy access to the billion or so people without it, while also cutting back on fuels that warm the planet. Those simultaneous challenges appear less overwhelming with increasingly better answers to a centuries-old question: how to make power portable.

To be sure, the battery still has a long way to go before the nightly recharge completely replaces the weekly trip to the gas station. A battery-powered world comes with its own risks, too. What happens to the centralized electric grid, which took decades and billions of dollars to build, as more and more people become “prosumers,” who produce and consume their own energy on site?

No one knows which—if any—battery technology will ultimately dominate, but one thing remains clear. The future of energy is in how we store it.

1. What does Dr. Sadoway think of energy storage?

A. It involves the application of sophisticated technology.

B. It is the direction energy development should follow.

C. It will prove to be a profitable business.

D. It is a technology benefiting everyone.

2. What is most likely to happen when advanced batteries become widely used?

A. Mobile-first lifestyles will become popular.

B. The globalization process will be accelerated.

C. Communications will take more diverse forms.

D. The world will undergo revolutionary changes.

3. In some rural communities of emerging economies, people have begun to______.

A. find digital devices simply indispensable

B. communicate primarily by mobile phone

C. light their homes with stored solar energy

D. distribute power with wires and wooden poles

4. What does the author imply about the centralized electric grid?

A. It might become a thing of the past.

B. It might turn out to be a “prosumer”。

C. It will be easier to operate and maintain.

D. It will have to be completely transformed.

【答案】B D C A

【解析】

(1):从第一段最后Sadoway isn’t alone in boasting energy storage as a missing link to a cleaner, more efficient, and more equitable energy future.说明他认为储存能量是引导未来更清洁更有效能源的方向,(2)第三段结尾Having already enabled a communications revolution, the battery is now poised to transform just about everything else.电池已经使得很多科技在运转,现在趋向于改变其他所有事情。AC已经存在B 未提到D经历革命性变革

(3)第四段结尾Instead, some in Africa and Asia are seeing their first lightbulbs illuminated by the power of sunlight stored in batteries.可知这些地区用了从太阳储存的能量来照明

(4)文章中提出一个问题how to make power portable所以输电网络可能会成为历史

Section B (8’)

Direction: In the following article, 4 sentences have been removed. Choose the most suitable ones from the list A-F to fit into each of the numbered gaps. There are TWO which do not fit in any of the gaps.

Time to Tame Silicon Valley

The company Uber brings into very sharp focus the question Of whether corporations can be said to have a moral character. If any human being were to behave with the single-minded and greed of the company, we would consider them anti-social,

1 Therefore, it has an arrangement with Unroll.me, a company which offered a free service for unsubscribing from junk mail, to buy the contacts Unroll.me customers had had with rival taxi companies. Beyond that, it keeps track of the phones that have been used to book its services even after the original owner has sold them, but attempts this with Apple's phones is forbidden by the company.

Uber has also adjusted its software so that regulatory agencies that the company regarded as hostile (敌意的)would, when they tried to hire a driver, be given false reports about the location of its cars, Uber management booked and then cancelled rides with a rival company which took their vehicles out of circulation 2 The punishment for this behaviour was so small that it was not worth worrying about.

Uber promised not to use this software against law enforcement. 3 Travis Kalanick of Uber got a personal criticism from Tim Cook, who runs apple, but the company did not prohibit the use of the app. Too much money was invested in that.

The "sharing economy" encourages the insecure and exploited to exploit others equally insecure to the profit of a tiny group of billionaires. 4 outgoing CEO of Yahoo, Marissa Mayer; who is widely judged to have been a failure, is likely to get a $186m payout. This may not be a cause for panic. Yet there's an urgent political task to tame these companies, to ensure they are punished when they break the law, that they pay their taxes fairly and that they behave responsibly.

【答案】D A F C

【解析】

(1):优步公司想知道谁使用它的服务哪些没有所以接下来它和后面的公司签了协议获得用户资料

(2)前面说优步做的一些手法比如说叫了车又取消,然后否认这是故意的,所以这一行为并没有带来多大的惩罚

(3)前面说优步承诺不会用这一软件来妨碍法律实施,同理和F的拿着刀承诺不会刺警察描述一样都有讽刺意味

(4)后边说要采取措施使这些公司温顺,违背法律的进行惩罚,其中硅谷就是一个。

VI. Translation (15’ 3+3+4+5)

1.这家公司规定每个职工有权每年享有带薪假期。(it, entitle)

2.直到被送入手术室,他才明白遵守交通规则的重要性。(It)

3.他们正期待在将科研成果运用于教育实践方面取得重大突破。(expect)

4.我认为人类很可能进入外太空,这一点已证明是真的。(possibility, accessible)

1.【答案】The company makes it a rule that every employee is entitled to annual paid leave.

【分析】本题考察it做形式宾语的用法,以及be entitled to 作为有权利做…的含义。

2.【答案】It was not until he was sent into the operating room that he realized the importance of observing the traffic regulations

【分析】本题考察It…that的强调句的用法,遵守交通规则——observe the traffic regulations.

3.【答案】They are expecting to make a significant breakthrough in applying the result of the scientific research to educational practice.

【分析】本题考查expect作为动词期待的用法,“正期待”因此时态为现在进行时,运用——apply… to…

4.【答案】I think there is much possibility that outer space is accessible to man, which has proved to be true.【分析】本题考察possibility和accessible的用法,possibility为名词,可能性;accessible为形容词,用法为sth/sp be accessible to sb.

民办中小学收费一览表

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上海市和衷中学中学3500 800 上海市民办行中中学中学3500 800 高中5000 上海民办锦秋学校小学3000 中学3500 上海民办交华中学中学5000 600 上海民办建峰高级中学高中4000 600 上海市行知第二中学中学5000 800 上海鸿文国际职业高级中学高中4500 崇明上海崇明民办大通中学初中3000 一类:360 二类:270 上海崇明民办大通中学小学2700 崇明县中华高级中学高中3000 三类:180 崇明县中华高级中学初中2500 虹口 上海市民办宏星小学小学5000 上海市民办新复兴初级中学初中6000 上海市民办丽英小学小学5000 360 上海市民办汇民高级中学高中5000 上海市民办新华初级中学初中6000 上海市民办迅行中学初中、高中5000 上海市民办白玉兰中学初中、高中5000 360 金山民办交大南洋中学初中5000 360 高中5500 360 民办师大实验中学初中3500 180 民办金盟学校初中3500 180 小学3000 180 民办金中中学初中3500 180 静安民办上外静安外国语中学初中3000 360 民办上外静安外国语小学小学2500 360 卢湾 私立永昌学校 小学3200 初中4500 600 震旦外国语中学初中4800 震旦中专 中专(非艺 术类) 2000 中专(艺术 类) 2500 永兴高级中学高中3000 中华职工中专成人中专1800 闵行上海市民办日新实验小学小学2000 上海闵行民办华星学校小学1500 上海市七宝外国语小学小学5000 闵行区民办塘湾小学小学1400 上海市燎原实验学校小学4000 360

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25.已知,如图,Rt△ABC中,∠ACB=90°,BC=8,cot∠BAC=,点D在边BC上(不与点B、C重合),点E在边BC的延长线上,∠DAE=∠BAC,点F 在线段AE上,∠ACF=∠B.设BD=x. (1)若点F恰好是AE的中点,求线段BD的长; (2)若y=,求y关于x的函数关系式,并写出它的定义域; (3)当△ADE是以AD为腰的等腰三角形时,求线段BD的长.

25.(14分)如图,△ABC边AB上点D、E(不与点A、B重合),满足∠DCE=∠ABC,∠ACB=90°,AC=3,BC=4; (1)当CD⊥AB时,求线段BE的长; (2)当△CDE是等腰三角形时,求线段AD的长; (3)设AD=x,BE=y,求y关于x的函数解析式,并写出定义域.

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5.如图所示是水波遇到小孔或障碍物后的图像,图中每两条实线间的距离表示一个波长,其中正确的图像是( ) 6.如图所示,在水平向左的匀强电场中,有一个带正电的小滑块,此时小滑块静止在竖直的粗糙墙壁上。忽略空气阻力,当撤掉电场后,木块将做( ) (A )匀速直线运动 (B )曲线运动 (C )自由落体运动 (D )变加速直线运动 7.杯子里盛有热水,经过一段时间后杯子里的水慢慢变凉,则( ) (A )水分子的平均动能减小 (B )所有水分子的动能都减小 (C )只有个别水分子的动能减小 (D )水分子的动能可以用1 2 mv 2计算 8.如图所示为两个等量异种点电荷,A 、B 、C 为电场中的三点,三处的电场强度大小分别为E A 、E B 、E C ,电势分别为φA 、φB 、φC ,则( ) (A )E A E B ,φA >φC (C )E A >E B ,φA =φC (D )E A >E B ,φA <φC 9.如图所示为某电学元器件的伏安特性曲线,图中虚线为曲线上P 点的切线。当通过该元器件的电流为时,该元器件的阻值为( ) (A )250Ω (B )125Ω (C )100Ω (D )Ω A . B . C . D . E P O U /V I /A 50 25 A B C

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上海市普陀区2019届高三英语一模

学霸学习提醒 一、课本是最好的老师。要注重基础,反复研读课本,巩固基础知识。 二、要养成良好的学习习惯。良好的学习习惯是高效率掌握知识的保障。 三、要保持良好的学习状态,自信踏实,刻苦努力,以饱满的精神迎接新一天的挑战。 四、课堂上:专心听讲是第一位。事实证明,自以为是的确是不好的习惯。同样的例题,自己看懂与听老师讲懂是完全不同的两种效果。 五、建议同学们在课外多投入些时间做题,并且要从心里重视数学。还应该准备一个错题本,老老实实地将每次错过的题抄在上面,并写上正确的解题思路,变不懂为精通。 特别提醒:请学习稍差的同学一定不要放弃,哪怕到最后一学期,也不能放弃。只要按照老师说的去做,只要塌实地付出了,就一定会有奇迹出现。永远不要放弃拼搏,因为奇迹只发生在相信奇迹存在的人身上!!! 普陀区2018-2019学年度第一学期期末质量监控试卷 高三英语

(满分140分,完卷时间120分钟)2018.12 考生注意: 1.考试时间120分钟,试卷满分140分。 2. 本次考试设试卷和答题纸两部分。所有答题必须涂(选择题)或写(非选择题)在答题纸上,做在试卷上一律不得分。 3. 答题前,务必在答题纸上填写准考证号和姓名。 I. Listening Comprehension Section A Directions: In Section A, you will hear ten short conversations between two speakers. At the end of each conversation, a question will be asked about what was said. The conversations and the questions will be spoken only once. After you hear a conversation and the question about it, read the four possible answers on your paper, and decide which one is the best answer to the question you have heard. 1. A. Salesperson and customer. B. food show and guest. C. Manufacturer and supplier. D. producer and director. 2. A. He is fearless. B. He is thoughtful. C. He is helpful. D. He is forgetful. 3. A. Sixty minutes. B. Seventy-five minutes. C. An hour and twenty minutes. D. An hour and a half. 4. A. He hasn't been to the theater for many years. B. He doesn't think there are many good movies these years. C. He doesn't like seeing movies except this good one. D. The film recommended by her brother is highly praised. 5. A. Sue and Jim are both loaners. B. Sue borrows things from her roommate and returns it in time. C. Jim never borrows anything from his roommate D. Sue likes to take what she borrows as her own 6. A. Many volunteers participated in the work of selling houses. B. Many people who couldn't afford a house can now afford it. C. People without money can do voluntary work. D.Volunteers can get a cheaper price for buying a house. 7. A. The woman likes making videos instead of photography. B. The woman likes photography instead of making videos.

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