In the late l960s．many people in North America turned their attention to environmental problems，and new steel-and-glass skyscraper,5 were widely criticized．Ecologists pointed out that acluster of tall buildings in a city often overburdens public transportation and parking lot capacities． Skyscrapers are also lavish consumers，and wasters，of electric power．In one recent year．The addition of l7 million square feet of skyscraper omce space in New York City raised the peak daib demand for electricity by l20，000 kilowatts--enough tO supply the entire city of Albany，New York，for a day． Glass·walled skyscrapers can be especially wasteful．The heat loss(or gain)through a wall of half-inch plate glass is more than ten times that through a typical masonry wall filled with insula．tion board．To lessen the strain on heating and air conditioning equipment，builders of skyscrapers have begun to use double glazed panels of glass，and reflective glasses coated with siNer or gold mirror films that reduce glare aS well as heat gain．However，mirror-walled skyscrapers raise the temperature of the surrounding air and affect neighboring buildings． Skyscrapers put a severe strain on a city’S sanitation facilities，t00．If fully occupied，the two World Trade Center towers in New York City would alone generate 2．25 million gallons of raw sewage each year--as much as a city the size of Stamford, Connecticut, which has a population ofmore than 109,000． Skyscrapers also interfere with television reception, block bird flyways, and obstruct air traffic． In Boston in the late 1960s, some people even feared that shadows from skyscrapers would kill the grass on Boston Common． Still, people continue to build skyscrapers for all the reasons that they have always built them-personal ambition, civic pride, and the desire of owners to have the largest possible amount of rentable space． The main purpose of the passage is to ( )A. discuss the advantages and disadvantages of skyscrapersB. compare skyscrapers with other modern structuresC. describe skyscrapers and their effect on the environmentD. illustrate various architectural
In the late l960s．many people in North America turned their attention to environmental problems，and new steel-and-glass skyscraper,5 were widely criticized．Ecologists pointed out that acluster of tall buildings in a city often overburdens public transportation and parking lot capacities．
Skyscrapers are also lavish consumers，and wasters，of electric power．In one recent year．The addition of l7 million square feet of skyscraper omce space in New York City raised the peak daib demand for electricity by l20，000 kilowatts--enough tO supply the entire city of Albany，New York，for a day．
Glass·walled skyscrapers can be especially wasteful．The heat loss(or gain)through a wall of half-inch plate glass is more than ten times that through a typical masonry wall filled with insula．tion board．To lessen the strain on heating and air conditioning equipment，builders of skyscrapers have begun to use double glazed panels of glass，and reflective glasses coated with siNer or gold
mirror films that reduce glare aS well as heat gain．However，mirror-walled skyscrapers raise the temperature of the surrounding air and affect neighboring buildings．
Skyscrapers put a severe strain on a city’S sanitation facilities，t00．If fully occupied，the two World Trade Center towers in New York City would alone generate 2．25 million gallons of raw sewage each year--as much as a city the size of Stamford, Connecticut, which has a population ofmore than 109,000．
Skyscrapers also interfere with television reception, block bird flyways, and obstruct air traffic．
In Boston in the late 1960s, some people even feared that shadows from skyscrapers would kill the grass on Boston Common．
Still, people continue to build skyscrapers for all the reasons that they have always built them-personal ambition, civic pride, and the desire of owners to have the largest possible amount of rentable space．
The main purpose of the passage is to ( )
Skyscrapers are also lavish consumers，and wasters，of electric power．In one recent year．The addition of l7 million square feet of skyscraper omce space in New York City raised the peak daib demand for electricity by l20，000 kilowatts--enough tO supply the entire city of Albany，New York，for a day．
Glass·walled skyscrapers can be especially wasteful．The heat loss(or gain)through a wall of half-inch plate glass is more than ten times that through a typical masonry wall filled with insula．tion board．To lessen the strain on heating and air conditioning equipment，builders of skyscrapers have begun to use double glazed panels of glass，and reflective glasses coated with siNer or gold
mirror films that reduce glare aS well as heat gain．However，mirror-walled skyscrapers raise the temperature of the surrounding air and affect neighboring buildings．
Skyscrapers put a severe strain on a city’S sanitation facilities，t00．If fully occupied，the two World Trade Center towers in New York City would alone generate 2．25 million gallons of raw sewage each year--as much as a city the size of Stamford, Connecticut, which has a population ofmore than 109,000．
Skyscrapers also interfere with television reception, block bird flyways, and obstruct air traffic．
In Boston in the late 1960s, some people even feared that shadows from skyscrapers would kill the grass on Boston Common．
Still, people continue to build skyscrapers for all the reasons that they have always built them-personal ambition, civic pride, and the desire of owners to have the largest possible amount of rentable space．
The main purpose of the passage is to ( )
A. discuss the advantages and disadvantages of skyscrapers
B. compare skyscrapers with other modern structures
C. describe skyscrapers and their effect on the environment
D. illustrate various architectural
B. compare skyscrapers with other modern structures
C. describe skyscrapers and their effect on the environment
D. illustrate various architectural
参考解析
解析：主旨题。本篇短文的主要目的是描述摩天大楼以及摩天大楼对环境造成的影响。文章的第一段是主题段(topic sentence)。作者在这一段首先从整体上提出了摩天大楼对环境造成的影响．然后在下面的几段具体地从几个方面论述了对环境造成的影响。
相关考题：
The factory has turned out more and better bicycles since the new techniques were __. A.adoptedB.adaptedC.adjustedD.assisted
CAmerican cities are similar to other cities around the world; In every country. Cities reflect the values of the culture. American cities are changing， just as American society is changing.After Wolld Wa Ⅱ,the population of most large American cities decreased; bowever. The populaton In omthe Sun Belt cities increased. Los Angeles and Houston are eitit where populatfon shife（转移）to and from the oity reflect the changing values of Amorican society. In the late 1940s and early 1950s,city residents（居民）became wealthier. They had more children so they needed more space, They moved out of their apartments in the city to buy their own homes. They bought houses in the suburbs（郊区）.Now things are changing. The children of the people who left the cities in the 1950s are now adults. Many, unlike their parents, want to live in the cities. They continue to move to Sun Belt cities and older ones of the Northeast and Midwest. Many young professionals are moving back into city. They prefer the city to the burbs because their jobs are there; or they jus enjoy the excitement and possibii that the city offers.his people shift is bringing problems as well as benefits. Countless poot people must leave their apartments in the city because the owners want to sell the buildings or make apartments for sale instead of for rent. In the 1950s, many poor people did not have enough money to move to the suburbs; now many of these same people do not have enough money to stay in the cities.Only a few years ago, people though that the older American cities were dying. Some city residents now see a bright, new fiture, Others see only problems and comfiels the thing is sure many dying cities are alive again.64. What does the author think of cities all over the world?A. They are alive.B. They are hopeless.C. They are similar.D. They are different.
Which of the following statement is true?A. Mark played an active part in community activities.B. the city councilwoman was responsible for the decrease of life quality.C. people were encouraged to give advice to solve these city problems.D. many people were discouraged by the many problems facing them.
Passage ThreeQuestions 31 to 35 are based on the following passage.In the late 1960's many people in North America turned their attention to environmental problems，and new steel-and-glass skyscrapers(摩天楼)were widely criticized. Scientists pointed out that blocks of tall buildings in a city often overburdens. public transportation and parking lot capacities.Skyscrapers are also big consumers，and wasters，of electric power. In one recent year. the addition of 17 million square feet of skyscraper office space in New York City raised the peak daily demand for electricity by 120，000 kilowatts-enough to supply the entire city of Albany，New York，for a day.Glass-walled skyscrapers can be especially wasteful. The heat loss(or gain)through a wall of half-inch plate glass is more than ten times that through a typical brick wall filled with insulation board. To lessen the strain on heating and air-conditioning equipment，builders of skyscrapers have begun to use double-glazed(装上玻璃的)panels of glass，and reflective glasses coated with silver or gold mirror films that reduce glare as well as heat gain. However. mirror-walled skyscrapers raise the temperature of the surrounding air and affect neighboring buildings.Skyscrapers put a severe strain on a city's sanitation(卫生)facilities，too. If fully occupied, the two World Trade Center towers in New York City would alone generate 2.25 million gallons of raw wastes each year-as much as a city the size of Stamford，Connecticut，which has a population of more than 109，000.Skyscrapers also interfere with television reception，block bird flyways，and obstruct air traffic. In Boston in the late 1960's，some people even feared that shadows from skyscrapers would kill the grass on Boston Common.Still，people continue to build skyscrapers for all the reasons that they have always built them-personal ambition(抱负)pride，and the desire of owners to have the largest possible amount of rentable space.The main purpose of the passage is to______.A. compare skyscrapers with other modem structuresB. describe skyscrapers and their effect on the environmentC. advocate the use of masonry(化妆舞会)in the construction of skyscrapersD. illustrate some architectural designs of skyscrapers
It can be inferred from the text that public servicesA have benefited many people.B are the focus of public attention.C are an inappropriate subject for humor.D have often been the laughing stock.
Which is the best title of this passage?A. The Earliest People in North America.B. The Earliest Immigrants to North America.C. The People of the United States.D. Europeans Were the Earliest People Coming to the North America.
共用题干ADHD Linked to Air PollutantsChildren have an increased of attention problems,seen as early as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pregnant. That's the finding of a new study.Released when things aren't burned completely,this pollution is known as polycyclic aromatic hydrocarbons,or PAHs.The biggest sources of these PAHs:the burning of fossil fuels, wood and trash.Frederica Perera works at Columbia University's Mailman School of Public Health in New York City.She researches how exposure to things in the environment affects children's health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City. Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera's team focused on nonsmokers. The researchers wanted to probe（探查）other sources of PAHs,ones that's would have been hard for an individual to avoid．The team started by testing the blood of each woman during pregnancy.The reason:Any PAHs in a woman's blood would also be available to the baby in her womb.Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child's mother a series of questions.These included whatever her child had problems doing things that needed sustained（长期的）mental effort, such as homework or games with friends. The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes .All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.S.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Perera and her team suspect. Some of these women had low levels of PAHs in their blood .Others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. Nonsmoking mothers were selected because the effect of smoking on PAHs was unclear.A: RightB: WrongC:Not mentioned
共用题干ADHD Linked to Air PollutantsChildren have an increased of attention problems,seen as early as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pregnant. That's the finding of a new study.Released when things aren't burned completely,this pollution is known as polycyclic aromatic hydrocarbons,or PAHs.The biggest sources of these PAHs:the burning of fossil fuels, wood and trash.Frederica Perera works at Columbia University's Mailman School of Public Health in New York City.She researches how exposure to things in the environment affects children's health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City. Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera's team focused on nonsmokers. The researchers wanted to probe（探查）other sources of PAHs,ones that's would have been hard for an individual to avoid．The team started by testing the blood of each woman during pregnancy.The reason:Any PAHs in a woman's blood would also be available to the baby in her womb.Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child's mother a series of questions.These included whatever her child had problems doing things that needed sustained（长期的）mental effort, such as homework or games with friends. The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes .All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.S.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Perera and her team suspect. Some of these women had low levels of PAHs in their blood .Others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. The main purpose of the research was to find out how exposure to PAHs played a role in har-ming the subjects' physical health.A:RightB: WrongC:Not mentioned
共用题干ADHD Linked to Air PollutantsChildren have an increased of attention problems,seen as early as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pregnant. That's the finding of a new study.Released when things aren't burned completely,this pollution is known as polycyclic aromatic hydrocarbons,or PAHs.The biggest sources of these PAHs:the burning of fossil fuels, wood and trash.Frederica Perera works at Columbia University's Mailman School of Public Health in New York City.She researches how exposure to things in the environment affects children's health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City. Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera's team focused on nonsmokers. The researchers wanted to probe（探查）other sources of PAHs,ones that's would have been hard for an individual to avoid．The team started by testing the blood of each woman during pregnancy.The reason:Any PAHs in a woman's blood would also be available to the baby in her womb.Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child's mother a series of questions.These included whatever her child had problems doing things that needed sustained（长期的）mental effort, such as homework or games with friends. The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes .All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.S.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Perera and her team suspect. Some of these women had low levels of PAHs in their blood .Others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. Perera and her team chose nonsmoking pregnant women all over America.A: RightB: WrongC:Not mentioned
In the late l960s．many people in North America turned their attention to environmental problems，and new steel-and-glass skyscraper,5 were widely criticized．Ecologists pointed out that acluster of tall buildings in a city often overburdens public transportation and parking lot capacities． Skyscrapers are also lavish consumers，and wasters，of electric power．In one recent year．The addition of l7 million square feet of skyscraper omce space in New York City raised the peak daib demand for electricity by l20，000 kilowatts--enough tO supply the entire city of Albany，New York，for a day． Glass·walled skyscrapers can be especially wasteful．The heat loss(or gain)through a wall of half-inch plate glass is more than ten times that through a typical masonry wall filled with insula．tion board．To lessen the strain on heating and air conditioning equipment，builders of skyscrapers have begun to use double glazed panels of glass，and reflective glasses coated with siNer or gold mirror films that reduce glare aS well as heat gain．However，mirror-walled skyscrapers raise the temperature of the surrounding air and affect neighboring buildings． Skyscrapers put a severe strain on a city’S sanitation facilities，t00．If fully occupied，the two World Trade Center towers in New York City would alone generate 2．25 million gallons of raw sewage each year--as much as a city the size of Stamford, Connecticut, which has a population ofmore than 109,000． Skyscrapers also interfere with television reception, block bird flyways, and obstruct air traffic． In Boston in the late 1960s, some people even feared that shadows from skyscrapers would kill the grass on Boston Common． Still, people continue to build skyscrapers for all the reasons that they have always built them-personal ambition, civic pride, and the desire of owners to have the largest possible amount of rentable space． According to the passage, which aspect of skyscrapers was some residents of Boston concerned with in the late 1960s? ( )A. The poor reception of radio and TV signals．B. The removal of trees and grass from building sites．C. The harmful effects on the city's plants．D. The obstruction of air traffic．
In the late l960s．many people in North America turned their attention to environmental problems，and new steel-and-glass skyscraper,5 were widely criticized．Ecologists pointed out that acluster of tall buildings in a city often overburdens public transportation and parking lot capacities． Skyscrapers are also lavish consumers，and wasters，of electric power．In one recent year．The addition of l7 million square feet of skyscraper omce space in New York City raised the peak daib demand for electricity by l20，000 kilowatts--enough tO supply the entire city of Albany，New York，for a day． Glass·walled skyscrapers can be especially wasteful．The heat loss(or gain)through a wall of half-inch plate glass is more than ten times that through a typical masonry wall filled with insula．tion board．To lessen the strain on heating and air conditioning equipment，builders of skyscrapers have begun to use double glazed panels of glass，and reflective glasses coated with siNer or gold mirror films that reduce glare aS well as heat gain．However，mirror-walled skyscrapers raise the temperature of the surrounding air and affect neighboring buildings． Skyscrapers put a severe strain on a city’S sanitation facilities，t00．If fully occupied，the two World Trade Center towers in New York City would alone generate 2．25 million gallons of raw sewage each year--as much as a city the size of Stamford, Connecticut, which has a population ofmore than 109,000． Skyscrapers also interfere with television reception, block bird flyways, and obstruct air traffic． In Boston in the late 1960s, some people even feared that shadows from skyscrapers would kill the grass on Boston Common． Still, people continue to build skyscrapers for all the reasons that they have always built them-personal ambition, civic pride, and the desire of owners to have the largest possible amount of rentable space． Which of the following is NOT true according to the passage? ( )A. Skyscrapers provide more usable space than other buildings．B. The skyscrapers first appeared in the late 1960s．C. Where there are skyscrapers, television reception is poor．D. The two World Trade Center towers are skyscrapers．
根据下列内容，回答201-205题。In the late 1960s, many people in North America turned their attention to environmentalproblems, and new steel-and-glass skyscrapers were widely criticized. Ecologists pointed out that acluster of tall buildings in a city often transportation and parking lot capacities.Skyscrapers are also lavish consumers, and wasters of electric power. In one recent year, theaddition of 17 million square feet of skyscraper office space in New York City raised the peak dailydemand for electricity by 120,000 kilowatts--enough to supply the entire city of Albany, NewYork, for a day.Glass-walled skyscrapers can be especially wasteful. The heat loss (or gain) through a wall ofhalf-inch plate glass is more than ten times that through a typical masonry wall filled with insula-tion board. To lessen the strain on heating and air-conditioning equipment, builders of skyscrapershave begun to use double-glazed panels of glass, and reflective glasses coated with silver or goldmirror films that reduce glare as well as heat gain. However, mirror-walled skyscrapers raise thetemperature of the surrounding air and affect neighboring buildings.Skyscrapers put a severe strain on a city's sanitation facilities, too. If fully occupied, the twoWorld Trade Center towers in New York City would alone generate 2.25 million gallons of rawsewage each year--as much as a city the size of Stamford, Connecticut, which has a population ofmore than 109,000.Skyscrapers also interfere with television reception, block bird flyways, and obstruct air traf-fic. In Boston in the late 1960s, some people even feared that shadows from skyscrapers would killthe grass on Boston Common.Still, people continue to build skyscrapers for all the reasons that they have always builtthem--personal ambition, civic pride, and the desire of owners to have the largest possible amountof rentable space.The main purpose of the passage is to__________.A.discuss the advantages and disadvantages of skyscrapersB.compare skyscrapers with other modern structuresC.describe skyscrapers and their effect on the environmentD.illustrate various architectural
In the late l960s．many people in North America turned their attention to environmental problems，and new steel-and-glass skyscraper,5 were widely criticized．Ecologists pointed out that acluster of tall buildings in a city often overburdens public transportation and parking lot capacities． Skyscrapers are also lavish consumers，and wasters，of electric power．In one recent year．The addition of l7 million square feet of skyscraper omce space in New York City raised the peak daib demand for electricity by l20，000 kilowatts--enough tO supply the entire city of Albany，New York，for a day． Glass·walled skyscrapers can be especially wasteful．The heat loss(or gain)through a wall of half-inch plate glass is more than ten times that through a typical masonry wall filled with insula．tion board．To lessen the strain on heating and air conditioning equipment，builders of skyscrapers have begun to use double glazed panels of glass，and reflective glasses coated with siNer or gold mirror films that reduce glare aS well as heat gain．However，mirror-walled skyscrapers raise the temperature of the surrounding air and affect neighboring buildings． Skyscrapers put a severe strain on a city’S sanitation facilities，t00．If fully occupied，the two World Trade Center towers in New York City would alone generate 2．25 million gallons of raw sewage each year--as much as a city the size of Stamford, Connecticut, which has a population ofmore than 109,000． Skyscrapers also interfere with television reception, block bird flyways, and obstruct air traffic． In Boston in the late 1960s, some people even feared that shadows from skyscrapers would kill the grass on Boston Common． Still, people continue to build skyscrapers for all the reasons that they have always built them-personal ambition, civic pride, and the desire of owners to have the largest possible amount of rentable space． Which of the following groups would the skyscraper issue most concern?( )A. ElectriciansB. EnvironmentalistsC. City plannersD. Television viewers
Mr Tunick filed suit against the New York police department after city officials ____ his request.A. turned down B. turned in C. turned off D. turned out
In the late l960s．many people in North America turned their attention to environmental problems，and new steel-and-glass skyscraper,5 were widely criticized．Ecologists pointed out that acluster of tall buildings in a city often overburdens public transportation and parking lot capacities． Skyscrapers are also lavish consumers，and wasters，of electric power．In one recent year．The addition of l7 million square feet of skyscraper omce space in New York City raised the peak daib demand for electricity by l20，000 kilowatts--enough tO supply the entire city of Albany，New York，for a day． Glass·walled skyscrapers can be especially wasteful．The heat loss(or gain)through a wall of half-inch plate glass is more than ten times that through a typical masonry wall filled with insula．tion board．To lessen the strain on heating and air conditioning equipment，builders of skyscrapers have begun to use double glazed panels of glass，and reflective glasses coated with siNer or gold mirror films that reduce glare aS well as heat gain．However，mirror-walled skyscrapers raise the temperature of the surrounding air and affect neighboring buildings． Skyscrapers put a severe strain on a city’S sanitation facilities，t00．If fully occupied，the two World Trade Center towers in New York City would alone generate 2．25 million gallons of raw sewage each year--as much as a city the size of Stamford, Connecticut, which has a population ofmore than 109,000． Skyscrapers also interfere with television reception, block bird flyways, and obstruct air traffic． In Boston in the late 1960s, some people even feared that shadows from skyscrapers would kill the grass on Boston Common． Still, people continue to build skyscrapers for all the reasons that they have always built them-personal ambition, civic pride, and the desire of owners to have the largest possible amount of rentable space． According to the passage, what is one disadvantage of skyscrapers that have mirrored walls? ( )A. The exterior surrounding air is heated．B. The building materials are very expensive．C. Construction time is increased．D. Extra air-conditioning equipment is needed
共用题干Traffic in Our CitiesThe volume of traffic in many cities in the world today continues to expand.This causes many problems,including serious air pollution,lengthy delays,and the greater risk______(1)accidents.Clearly,something must be done,but it is often difficult to persuade people to______(2)their habits and leave their cars at home. One possible______(3)is to make it more expensive for people to use their cars by ______(4)charges for parking and______(5)tougher fines for anyone who______（6) the law.In addition,drivers could be required to pay for using particular routes at different times of the day.This system,______(7)as“road pricing”,is already being introduced in a______(8)of cities,using a special electronic card______(9)to the windscreen of the car.Another way of______(10)with the problem is to provide cheap parking on the ______(11)of the city,and strictly control the number of vehicles allowed into the centre.Drivers and their passengers then use a special bus______(12)for the final stage of their journey. Of course,the most important______(13)is to provide good public transport.How-ever,to get people to______(14)the comfort of their cars,public transport must be felt to be reliable,convenient and comfortable,with fares______(15)at an acceptable level.14._________A:pass onB:throw awayC:give upD:leave out
共用题干ADHD Linked to AIF PollutantsChildren have an increased of attention problems,seen asearly as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pre, ant.That,5 the finding ofa new study.Released when things aren't burned completely,this pollution 15 known as polycyclic aromatic hydrocarbons,or PAHs.Tlle higgest sources of these PAHs:the bunling of fossil fuels, wood and trash.Frederica Perera works at Columbia University,5 Mailman School of Public Health in New York City.She researclies how exposure to things in the environment affects children,5 health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmokingpre,ant women in New York City.Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera,5 team focused on nonsmokers.The researchers wanted to probe（探查）other sources of PA Hs,ones that,5 would have been hard for an individual to avoid.The team started by testing the blood of each woman during pregnancy.The reason:Any PA H 5 in a woman's blood would also be available to the baby in her womb．Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child’s mother a series of questions.These included whatever her child had prohlems doing things that needed sustained（长期的）mental effort,such as homework or games with friends.The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes.All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.5.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Pereraand her team suspect.Some of these women had low levels of PAHs in their blood.others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. The main purpose of the research was to find out how exposure to PAHs played a role in har-ming the subjects' physical health.A:RightB: WrongC: Not mentioned
共用题干ADHD Linked to AIF PollutantsChildren have an increased of attention problems,seen asearly as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pre, ant.That,5 the finding ofa new study.Released when things aren't burned completely,this pollution 15 known as polycyclic aromatic hydrocarbons,or PAHs.Tlle higgest sources of these PAHs:the bunling of fossil fuels, wood and trash.Frederica Perera works at Columbia University,5 Mailman School of Public Health in New York City.She researclies how exposure to things in the environment affects children,5 health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmokingpre,ant women in New York City.Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera,5 team focused on nonsmokers.The researchers wanted to probe（探查）other sources of PA Hs,ones that,5 would have been hard for an individual to avoid.The team started by testing the blood of each woman during pregnancy.The reason:Any PA H 5 in a woman's blood would also be available to the baby in her womb．Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child’s mother a series of questions.These included whatever her child had prohlems doing things that needed sustained（长期的）mental effort,such as homework or games with friends.The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes.All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.5.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Pereraand her team suspect.Some of these women had low levels of PAHs in their blood.others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. The blood of each woman was tested once a month during pregnancy.A: RightB: WrongC: Not mentioned
共用题干ADHD Linked to AIF PollutantsChildren have an increased of attention problems,seen asearly as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pre, ant.That,5 the finding ofa new study.Released when things aren't burned completely,this pollution 15 known as polycyclic aromatic hydrocarbons,or PAHs.Tlle higgest sources of these PAHs:the bunling of fossil fuels, wood and trash.Frederica Perera works at Columbia University,5 Mailman School of Public Health in New York City.She researclies how exposure to things in the environment affects children,5 health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmokingpre,ant women in New York City.Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera,5 team focused on nonsmokers.The researchers wanted to probe（探查）other sources of PA Hs,ones that,5 would have been hard for an individual to avoid.The team started by testing the blood of each woman during pregnancy.The reason:Any PA H 5 in a woman's blood would also be available to the baby in her womb．Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child’s mother a series of questions.These included whatever her child had prohlems doing things that needed sustained（长期的）mental effort,such as homework or games with friends.The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes.All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.5.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Pereraand her team suspect.Some of these women had low levels of PAHs in their blood.others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. Traffic and home heating were considered to be the biggest sources of PAHs for the subjects in the research.A: RightB: WrongC:Not mentioned
共用题干ADHD Linked to AIF PollutantsChildren have an increased of attention problems,seen asearly as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pre, ant.That,5 the finding ofa new study.Released when things aren't burned completely,this pollution 15 known as polycyclic aromatic hydrocarbons,or PAHs.Tlle higgest sources of these PAHs:the bunling of fossil fuels, wood and trash.Frederica Perera works at Columbia University,5 Mailman School of Public Health in New York City.She researclies how exposure to things in the environment affects children,5 health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmokingpre,ant women in New York City.Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera,5 team focused on nonsmokers.The researchers wanted to probe（探查）other sources of PA Hs,ones that,5 would have been hard for an individual to avoid.The team started by testing the blood of each woman during pregnancy.The reason:Any PA H 5 in a woman's blood would also be available to the baby in her womb．Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child’s mother a series of questions.These included whatever her child had prohlems doing things that needed sustained（长期的）mental effort,such as homework or games with friends.The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes.All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.5.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Pereraand her team suspect.Some of these women had low levels of PAHs in their blood.others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. Perera and her team chose nonsmoking pregnant women all over America.A: RightB: WrongC: Not mentioned
共用题干The City PlanningIn the past,cities usually grew in a disorderly way because few cities were built according to a plan.In the late 1 800s,the idea of a"beautiful city"came into_______(51).People felt that a city should have wide street,parks,and a civic centre.People_______(52)to realize that cities need to be planned.In the first part of the 1900s,cities began to_______(53)zoning laws.Zoning laws say what kind of building can be put up in different parts of a city.A factory cannot be put up on land _______(54)for apartments.Apartments,_______(55),cannot be built on land for houses.Meanwhile,cities were growing rapidly and changing almost_______(56).They faced many problems.Sometimes the streets in a city caused traffic_______(57).Sometimes there were not enough schools or hospitals for all the people who needed them. As people moved_______(58)to new areas of the city,older parts of town often became run-down.At first,citizens_______(59)groups that tried to solve the problems a city faced.Today, most large cities have city planning board_______(60)part of their city government. On the board are city_______(61)who have special training. Many of them have college_______(62)in city planning. They must know how a city's land can be_______(63)used.They_______(64)new areas of the city and decide how to improve older_______(65).City planing boards help the city meet the needs of all the people who live there._________(65)A:square B: divisionC:centers D:section
共用题干The City PlanningIn the past,cities usually grew in a disorderly way because few cities were built according to a plan.In the late 1 800s,the idea of a"beautiful city"came into_______(51).People felt that a city should have wide street,parks,and a civic centre.People_______(52)to realize that cities need to be planned.In the first part of the 1900s,cities began to_______(53)zoning laws.Zoning laws say what kind of building can be put up in different parts of a city.A factory cannot be put up on land _______(54)for apartments.Apartments,_______(55),cannot be built on land for houses.Meanwhile,cities were growing rapidly and changing almost_______(56).They faced many problems.Sometimes the streets in a city caused traffic_______(57).Sometimes there were not enough schools or hospitals for all the people who needed them. As people moved_______(58)to new areas of the city,older parts of town often became run-down.At first,citizens_______(59)groups that tried to solve the problems a city faced.Today, most large cities have city planning board_______(60)part of their city government. On the board are city_______(61)who have special training. Many of them have college_______(62)in city planning. They must know how a city's land can be_______(63)used.They_______(64)new areas of the city and decide how to improve older_______(65).City planing boards help the city meet the needs of all the people who live there._________(64)A:put out B:lay outC:give out D:hard out
class Parent { String one， two； public Parent（String a， String b）{ one = a； two = b； } public void print（）{ System.out.println（one）； } } public class Child extends Parent { public Child（String a， String b）{ super（a，b）； } public void print（）{ System.out.println（one + " to " + two）； } public static void main（String arg[]）{ Parent p = new Parent（"south"， "north"）； Parent t = new Child（"east"， "west"）； p.print（）； t.print（）； } } Which of the following is correct？（）A、 Cause error during compilation. B、 south east C、 south to north east to west D、 south to north east E、 south east to west
单选题From the passage we learn that______.AToronto spends lots of money yearly developing the cityBsome local residents showed a great interest in protecting the city's cultural siteCthe City Council of Toronto hasn't paid sufficient attention to the protection of the city's cultureDthe City Hall is still the largest city building in North America today
单选题“The city grew outward instead of upward” (Para. 2) means _____.Athe city became more spread out instead of growing tallerBthere were fewer small houses than tall buildingsCrapid development took place in the city centerDmany tall buildings could be found in the city
单选题The first blacks were brought to North America as _____.AservantsBslavesCfarmersDteachers