I have no time tochatwith you．题目和参考答案——青夏教育精英家教网—

年级	高中课程	年级	初中课程
高一	高一免费课程推荐！	初一	初一免费课程推荐！
高二	高二免费课程推荐！	初二	初二免费课程推荐！
高三	高三免费课程推荐！	初三	初三免费课程推荐！
更多初中、高中辅导课程推荐,点击进入>>

科目：高中英语 来源： 题型：阅读理解

7．Running on Empty
For almost a century，scientists have assumed，tiredness-or exhaustion-in athletes originates in the muscles（肌肉）．Precise explanations have varied，but all have been based on the"Limitations Theory"．In other words，muscles tire because they hit a physical limit； they either run out of fuel or oxygen or they drown in harmful by-products （副产品）．
In the past few years，however，Timothy Noakes from the University of Cape Town． South Africa，has examined this standard theory．Tiredness，he argues，is caused not by signals springing from overtaxed muscles，but is an emotional response which begins in the brain．The fundamental nature of his new theory is that the brain paces the muscles to keep them well back from the edge of exhaustion．When the brain decides it's time to quit，it creates unbearable muscle tiredness．This"Central Governor"theory remains controversial，but it does-explain many puzzling aspects of athletic performance．
A recent discovery that Noakes calls the"lactic acid paradox"made him start researching this area seriously．Lactic acid is a by-product of exercise，and the increase of it is often mentioned as a cause of tiredness．But when research subjects exercise in certain conditions created artificially，they become tired even though lactic acid levels remain low．
Nor has the oxygen content of their blood fallen too low for them to keep going．Obviously，something else was making them tire before they hit either of these physiological limits． Noakes conducted an experiment with seven cyclists．It has long been known that during exercise，the body never uses 100% of the available muscle fibres （纤维）．The amount used varies； but in some tasks such as this cycling test the body calls on about 30%．His team found that as tiredness set in，the electrical activity in cyclist's legs declined-even when they were making a great effort to cycle as fast as they could．
To Noakes，this was strong evidence that the old theory was wrong．"The cyclists may have felt completely exhausted，"he says，"but their bodies actually had considerable reserves that they could theoretically tap by using a greater amount of the resting fibres．"
This，he believes； is the proof that the brain is regulating the pace of the workout to hold the well back from the point of extreme tiredness．
67，Which of the following is supported by the"Limitations Theory"？B
A．Tiredness is caused by signals from brain．
B．Athletes feel tired when they use up all their energy．
C．The body uses 100% of the muscle fibres in exercise．
D．Athletes become tired though lactic acid levels remain low．
68．Noakes has found out that．C
A．muscle fibres control athletes'movements
B．lactic acid levels remain high in cycling test
C．mental processes control the symptoms of tiredness
D．different exercises use different amount of muscle fibres
69．It is likely that both theories accept that．A
A．lactic acid is produced in muscles during exercise
B．the oxygen content in blood may rise after sports
C．tiredness is a harmful by-product of exercise
D．the energy in human bodies can be
70．What is Paragraph 3mainly about？C
A．The description of a new test．
B．The explanation of the theory．
C．The puzzling evidence of a study．
D．The whole process of the research．

查看答案和解析>>

科目：高中英语 来源： 题型：阅读理解

8．Just how comfortable is your sofa？Would you be prepared to let a stranger crash out there for the night？And，on the basis of a bit of email correspondence and seeing a photo of the sofa belonging to'A．N．Unknown'，would you travel halfway across the world to do the same？It might sound crazy，but this is exactly what millions of people have done whilst participating in an activity known as couch surfing．
Couch surfing is traveling on a budget，using a broad network of contacts in order to get overnight accommodation for free，or at as little cost as possible．Participants join dedicated（专业的） websites，providing as much information about themselves as possible in order to make others feel comfortable hosting them，or using them as a host．
Various safety features are generally available in such online networks，like verification of names and addresses，personal references，and'vouching for'a particular member as a reliable host or guest．
As well as the financial advantages of couch surfing，participants also claim that the practice gives them a more unique，authentic travel experience，allowing them to experience culture and cuisine through the locals，rather than from the confines of sanitized tourist accommodation．We open our minds and lives and welcome the knowledge that becomes available through cultural exchange．"Said Casey Fenton，founder of Couch Surfing．Com．"CouchSurfing wants to change not only the way we travel，but how we relate to the world．"

61．What is the right order of couch surfing？D
a．Provide personal information．
b．Travel to the host's house．
c．Join dedicated websites．
d．Check photos of sofas by ensiles．
A．d-b-a-c        B．b-c-a-d     C．a-d-c-b         D．c-a-d-b
62．Which is NOT a safety lecture of online network？B
A．Verification of identity．       B．A copy of the passport．
C．Personal references．            D．Vouching ior the member as rdioble．
63．From the text we can know thatA．
A．participants can he hosted or a host
B．couch surfing tests people's patience
C．couch surfing leads to trust between people
D．people couch surf simply for financial reasons．
64．The text mainly intends toA．
A．introduce a new way of traveling
B．teach how to keep the Internet safety
C．promote online products
D．advocate deals of saving money
65．What can he the best title of the test？C
A．Touring the World on the Interne
B．Unique Advantages of Local Traveling
C．Around the World from Sofa to Sofa
D．Cultural Exchange by Correspendence．

查看答案和解析>>

科目：高中英语 来源： 题型：阅读理解

5．Even as Toyota CEO Akio Toyoda wrapped up a tired appearance before Congress，the head of the world's largest automaker wasn't leaving his problems behind．
Toyota faces a criminal investigation by federal lawyers in New York．The company is now being investigated．Its US dealerships in difficulty now are facing repairs to potentially millions of customer cars that have been recalled．The company is offering customers money back for rental cars and other expenses．
Its lawyers are busy preparing to cope with lawsuits．A new hearing will be conducted．And the cost to Toyota's reputation is only now starting．
Despite back-to-back hearings this  week，left to be said were a better explanation for slow actions to deal with the faults and believable promises that the problems that led to sudden，unintended accelerations will be fixed．
Toyoda said those changes were being made nearly around the clock，but during three hours of often tense questions and answers he repeated that there was no link to the vehicle's electronic systems．
Many drivers making complaints against Toyota and the government say their acceleration problems had nothing to do with floor mat interference（油门踏板故障）or sticky gas pedals（刹车）．Outside experts have suggested electronic problems．
House lawmakers expressed serious criticism on Toyoda，the grandson of the company's founder．
The National Highway Traffic Safety Administration（NHTSA）is seeking records on Toyota's recalls and is conducting its own review on whether electronics were behind the car faults．NHTSA also continues to look into steering complaints from drivers of the popular Corolla model．
Toyota has recalled 8.5million cars，more than 6million of them in the United States．
It may be a while before car buyers believe that Toyota really makes safe cars．
Toyota's January sales already fell 16percent even as most other automakers jumped back from last year's bad results．Analyst Koji Endo of Advanced Research Japan in Tokyo said he expects February sales，due out next week，to be down 30percent to 40．Toyota's sales problem could continue beyond that．
It will take some time to feel the full effect of this，he said．

66．The best title for this passage isA．
A．Toyota is in trouble    B．Toyota is under hearing
C．Toyota is finished      D．Toyota is still running
67．What is the purpose of the hearing？D
A．America hopes that Toyota apologizes to the US customers．
B．America wants to get Toyota out of the US market．
C．America wants to help Toyota out of difficulty．
D．America hopes that Toyota admits their cars have electronic system problem．
68．What can we infer from the passage？B
A．Toyota provides very good post sale service．
B．Toyota's biggest market is in the United States．
C．Toyota will be closed soon．
D．Toyota's dealership in the US will all be closed．
69．Why does Toyota recall cars and offer customers money back for rental cars and other
expenses？A
A．It tries to avoid the maximum damages to the company．
B．It is big company and has means to fix every problem．
C．It's part of post service．
D．It's a way to compete in auto market．
70．The last sentence of this passage indicatesB．
A．Analyst Koji Endo is fully confident about Toyota
B．Toyota could meet a worse situation
C．Toyota would get out of trouble sooner or later
D．Toyota would build up a better reputation among its customers．

查看答案和解析>>

科目：高中英语 来源： 题型：选择题

12．Do you have any plan for the coming weekend？
---I thought I might go shopping with my students，but something unexpected _____．（　　）

A．

has occurred

B．

had occurred

C．

was occurring

D．

would occur

查看答案和解析>>

科目：高中英语 来源： 题型：阅读理解

2．Before 1840architects and builders made buildings from stone，brick，or wood．The outside walls held up the weight of the building．A building that had more than a few stories became very heavy．A tall building，such as a castle，had very thick walls．
As time went by，architecture began to change．By 1850builders had begun to use a metal called iron for the fronts of some large buildings．Iron is lighter than stone and stronger than wood．People dig raw iron from the ground，but raw iron is not enough to use in buildings．Builders must use another type of iron called an alloy．
An alloy is a metal that contains different metals and other compounds，or mixtures of chemicals．The metals and compounds are melted and mixed together to form the alloy．To make an iron alloy，workers use a blast furnace．This machine creates great heat．It has a tall chamber that is lined with brick and open at the top．Workers put limestone，raw iron，and coke （a substance made from coal） into the top of the furnace．They force hot air into the bottom of the furnace．The hot air and a chemical reaction turn the materials into a liquid mass．Workers pour off waste liquid，called slag，and save the iron．Then they form the hot iron into large blocks called pigs，which can be formed into objects．This formed iron is called cast iron．
Cast iron is strong，but it still contains unwanted materials．People wanted to remove these impurities．To do this，they needed to heat the iron to very high temperature．Blast furnaces could not make that much heat．
In England in 1855，Sir Henry Bessemer found the solution．He forced air through liquid pig iron．The oxygen in the air mixed with the impurities in the iron in a process called oxidation．Oxidation creates heat．The heat turns impurities into slag，which is poured off so that only pure steel remains．Pure steel is much stronger than iron．The Bessemer process took place in an egg-shaped machine called a converter．With this process，workers began to make large amounts of steel quickly and cheaply．
By the late 1800s，many people lived in big cities．The price of land increased，one way builders could lower costs was to build taller buildings，which used less land．In Chicago in 1889，George A．Fuller completed the Tacoma Buildings，which had steel beams to hold up its weight．Soon people built more tall buildings with 10to 20stories．These were the first skyscrapers．

50．Alloys are important because theyC．
A．have no impurities
B．are the raw materials that people use to make iron
C．may be more useful than the separate metals in the alloy
D．contain different metals
51．The Bessemer process was a success because it producedB．
A．iron from steel
B．steel quickly and cheaply
C．less slag than a blast furnace
D．impurities in the iron
52．Sir Henry Bessemer probablyD．
A．avoided difficult problems
B．created slag into pure steel
C．was not familiar with metals such as steel
D．knew how to make cast iron
53．From the article，you can conclude that architects throughout historyA．
A．thought carefully about materials when they designed buildings
B．could not design creative buildings until steel was invented
C．disliked stone，brick，and wood
D．liked to design tall buildings
54．Which of the statements below expresses the main idea of the article？A
A．Discoveries about iron and steel have allowed people to build taller buildings．
B．Sir Henry Bessemer developed a process to make steel．
C．Architects use many kinds of materials in buildings．
D．Changes about designing building．

查看答案和解析>>

科目：高中英语 来源： 题型：填空题

9．telephone电话，电话机；给（某人）打电话．

查看答案和解析>>

科目：高中英语 来源： 题型：填空题

6．My desk mate likeswhispering （私语） to me in class．

查看答案和解析>>

科目：高中英语 来源： 题型：阅读理解

9．I was blind，but I was ashamed of it if it was known．I refused to use a white stick and hated asking for help．After all，I was a teenager girl，and I couldn't bear people to look at me and think I was not like them．I must have been a terrible danger on the roads，coming across me wandering through the traffic； motorists probably would have to step rapidly on their brakes．Apart from that，there were all sorts of disasters that used to occur on the way to and from work．
One evening，I got off the bus about halfway home where I had to change buses，and as usual I ran into something．"I'm awfully sorry，"I said and stepped forward only to run into it again．When it happened a third time，I realized I had been apologizing to a lamppost．This was just one of the stupid things that constantly happened to me．So I carried on and found the bus stop，which was a request stop，where the bus wouldn't stop unless passengers wanted to get on or off．No one else was there and I had to try to guess if the bus had arrived．
Generally in this situation，because I hated showing I was blind by asking for help，I tried to guess at the sound．Sometimes I would stop a big lorry and stand there feeling stupid as it drew away．In the end，I usually managed to swallow my pride and ask someone at the stop for help．
But on this particular evening no one joined me at the stop； it seemed that everyone had suddenly decided not to travel by bus．Of course I heard plenty of buses pass，or I thought I did．But because I had given up stopping them for fear of making a fool of myself，I let them all go by．I stood there alone for half an hour without stopping one．Then I gave up．I decided to walk on to the next stop．

16．The girl refused to ask for help because she thoughtD．
A．she might be recognized           B．asking for help looked silly
C．she was normal and independent    D．being found blind was embarrassing
17．After the girl got off the bus that evening，sheC．
A．began to run                    B．hit a person as usual
C．hit a lamppost by accident      D．was caught by something
18．At the request stop that evening，the girlC．
A．stopped a big lorry                   B．stopped the wrong bus
C．made no attempt to stop the bus       D．was not noticed by other people
19．What was the problem with guessing at the sound to stop a bus？B
A．Other vehicles also stopped there．
B．It was unreliable for making judgments．
C．More lorries than buses responded to the girl．
D．It took too much time for the girl to catch the bus．
20．Finally the girl decided to walk to the next stop，hopingA．
A．to find people there               B．to find more buses there
C．to find the bus by herself there    D．to find people more helpful there．

查看答案和解析>>

练习册

高中

初中

小学