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单选题
请阅读 Passage 1,完成第21~25小题。Passage 1Why has crime in the U.S. declined so dramatically since the 1990s?Economists and sociologists have offered a bounty of reasons, including more police, more security technology, more economic growth, more immigration, more imprisonment, and so on.The real answer is almost certainly a combination of these factors, rather than one of them to the exclusion of the rest. But a new paper adds a surprising variable to the mix. What if the decline of crime in America started with the decline of cash?Cash is critical to the health of an underground economy, because it's anonymous, nearly untraceable, and easily stolen. This makes it the lifeblood of the black market.But Americans are rapidly abandoning cash thanks to credit cards, debit cards, and mobile payments. Half a century ago, cash was used in 80 percent of U.S. payments. Now that figure is about 50 percent, according to researchers.In the 1980s, the federal government switched from paper money to electronic benefit transfers. They didn't switch all at once. They switched one county at a time within states. This created a kind of randomly controlled environment for the researchers, who studied Missouri's counties to establish whether the areas that switched from welfare cash to electronic transfers saw a concurrent decline in crime.The results were striking: The shift away from cash was associated with a sigpificant decrease in the overall crime rate and the specific offenses of burglary and assault in Missouri and a decline in arrests. In other words, the counties saw a decline in specific crimes when they switched away from cash welfare.Perhaps most interestingly, they found that the switch to electronic transfers reduced robbery but not rape, suggesting that the move away from cash only had an impact on crime related to getting and spending cash.The move toward cashlessness in the U.S. continues quickly. Google now lets you attach money to emails to send to friends, which means that for some shoppers, pulling out your credit card could become as rare as finding exact change in your coin purse. It might seem absurd to imagine Visa, Square, and Google Wallet as crime-fighting technologies. But with a better understanding of how cash's availability affects crime, perhaps the government should consider killing more than just the penny.Which of the following cannot explain why cash is critical to the health of an underground economy?
A
Cash is anonymous.
B
Cash is hardly traceable.
C
Cash is easily stolen.
D
Cash is the lifeblood of the black market.
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参考解析
解析：
更多 “单选题请阅读 Passage 1,完成第21~25小题。Passage 1Why has crime in the U.S. declined so dramatically since the 1990s?Economists and sociologists have offered a bounty of reasons, including more police, more security technology, more economic growth, more immigration, more imprisonment, and so on.The real answer is almost certainly a combination of these factors, rather than one of them to the exclusion of the rest. But a new paper adds a surprising variable to the mix. What if the decline of crime in America started with the decline of cash?Cash is critical to the health of an underground economy, because it's anonymous, nearly untraceable, and easily stolen. This makes it the lifeblood of the black market.But Americans are rapidly abandoning cash thanks to credit cards, debit cards, and mobile payments. Half a century ago, cash was used in 80 percent of U.S. payments. Now that figure is about 50 percent, according to researchers.In the 1980s, the federal government switched from paper money to electronic benefit transfers. They didn't switch all at once. They switched one county at a time within states. This created a kind of randomly controlled environment for the researchers, who studied Missouri's counties to establish whether the areas that switched from welfare cash to electronic transfers saw a concurrent decline in crime.The results were striking: The shift away from cash was associated with a sigpificant decrease in the overall crime rate and the specific offenses of burglary and assault in Missouri and a decline in arrests. In other words, the counties saw a decline in specific crimes when they switched away from cash welfare.Perhaps most interestingly, they found that the switch to electronic transfers reduced robbery but not rape, suggesting that the move away from cash only had an impact on crime related to getting and spending cash.The move toward cashlessness in the U.S. continues quickly. Google now lets you attach money to emails to send to friends, which means that for some shoppers, pulling out your credit card could become as rare as finding exact change in your coin purse. It might seem absurd to imagine Visa, Square, and Google Wallet as crime-fighting technologies. But with a better understanding of how cash's availability affects crime, perhaps the government should consider killing more than just the penny.Which of the following cannot explain why cash is critical to the health of an underground economy?A Cash is anonymous.B Cash is hardly traceable.C Cash is easily stolen.D Cash is the lifeblood of the black market.” 相关考题
考题
According to the passage, downshifting emerged in the U.S. as a result of _______ .A the quick pace of modern lifeB man's adventurous spiritC man's search for mythical experiencesD the economic situation
考题
请教:2005年12月大学英语三级考试真题第1大题第3小题如何解答?
【题目描述】
第3题：According to this passage, gestures are__________
A. spoken words
B. a non-language element
C. pictures in a language
D. written language
考题
The best title for this passage is ______.A. Crime--A Grave Problem in the WestB. Chevrolet--A Make of an Old CarC. Computer--A Powerful Aid in Fighting Against CrimeD. Police--A Useful Force in the Fight Against Crime
考题
According to the passage, immigrants choose to settle in the U.S., dreaming that _____________.
A. they will make a fortune overnight thereB. they can be more competitive in businessC. they can start profitable businesses thereD. they will find better chances of employment
考题
A rite of passage is an activity that ___ a change in a person’s life.
A. signalsB. givesC. marksD. has
考题
请教:2011年会计从业资格考试《初级电算化》试题二第1大题第21小题如何解答?
【题目描述】
21. 日期1900年1月25日在Excel系统内部储存的是（ ）
A.25
B.1,25,00
C.1-25-00
D.00,1,25
考题
请阅读Passage l。完成第21—25小题。
Passage 1
It's one of our common beliefs that mice are afraid of cats. Scientists have long known that even if a mouse has never seen a cat before, it is still able to detect chemical signals released from it and run away in fear. This has always been thought to be something that is hard-wired into a mouse s brain.
But now Wendy Ingram, a graduate student at the University of California, Berkeley, has challenged this common sense. She has found a way to"cure" mice of their inborn fear of cats by infecting them with a parasite, reported the science journal Nature.
The parasite, called Toxoplasma gondii, might sound unfamiliar to you, but the shocking fact is that up to one-third of people around the world are infected by it. This parasite can cause different diseases among humans, especially pregnant women--it is linked to blindness and the death of unborn babies.
However, the parasite's effects on mice are unique. Ingram and her team measured how mice reacted to a cat's urine(尿) before and after it was infected by the parasite. They noted that normal mice stayed far away from the urine while mice that were infected with the parasite walked freely around the test area.
But that's not all. The parasite was found to be more powerful than originally thought—even after researchers cured the mice of the infection. They no longer reacted with fear to a cat's smell,which could indicate that the infection has caused a permanent change in mice's brains.
Why does a parasite change a mouse's brain instead of making it sick like it does to humans?
The answer lies in evolution.
"It's exciting scary to know how a parasite can manipulate a mouse's brain this way," Ingram said. But she also finds it inspiring."Typically if you have a bacterial infection, you go to a doctor and take antibiotics and the infection is cleared and you expect all the symptoms to also go away."
She said, but this study has proven that wrong."This may have huge implications for infectious disease medicine."
The passage is mainly about__________.
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A．mice' s inborn terror of cats
B．the evolution of Toxoplasma
C．a new study about the effects of a parasite on mice
D．a harmful parasite called Toxoplasma gondii
考题
What could be the most appropriate title for the passage？( ) A.Cyber Crime and Its Prevention
B.The Origin of Cyber Crime
C.How to Deal with Cyber Crime
D.The Definition of Cyber Crime
考题
单选题Which best characterizes how the impact of science on chimpanzees is treated in these two passages?A
The author of Passage 1 lauds the benefits science has produced, while the author of Passage 2 speaks hopefully of possible future benefits.B
Both of the passages react with distrust to the idea of using science to assess chimpanzees.C
The first passage lists the studies that showed positive chimp interactions, while the author of Passage 2 refutes their claims,D
The first passage suggests that science can have a positive impact on perceptions about chimps, whereas the second passage views science as almost universally negative.E
The author of the first passage is more apt to justify using chimps in science than the author of Passage 2.
考题
单选题Which of the following best describes the relationship between Passage 1 and Passage 2?A
Passage 2 offers a criticism of the political theory outlined in Passage 1.B
Passage 1 expands upon an argument made in Passage 2.C
Passage 1 refutes the conclusion drawn in Passage 2.D
Passage 2 offers a balanced counterpoint to the biased opinions expressed in Passage 1E
Passage I offers evidence to support the main idea of Passage 2.
考题
单选题According to the passage, which of the following has changed the most in the last 500 years?A
FoodB
Chocolate drinksC
PotatoD
Coffee
考题
单选题Which of the following has the closest meaning to the underlined word “opportunity” in this passage?A
Reward.B
Interest.C
Ability.D
Chance.
考题
单选题The two passages differ in their perspectives on the debate between industrialists and environmentalists mainly in that Passage 1 emphasizes ______.A
mathematics, while Passage 2 emphasizes psychologyB
deficiencies in the debate, while Passage 2 emphasizes progress in the debateC
the irrelevance of externalities, while Passage 2 emphasizes their importanceD
the impact on taxpayers, while Passage 2 emphasizes the views of politiciansE
pollution, while Passage 2 emphasizes recycling
考题
单选题It can he learnt from the passage that Cubism has something to do with _____.A
architectureB
RenaissanceC
geographyD
geometry
考题
单选题请阅读 Passage 1,完成第21~25小题。Passage 1Why has crime in the U.S. declined so dramatically since the 1990s?Economists and sociologists have offered a bounty of reasons, including more police, more security technology, more economic growth, more immigration, more imprisonment, and so on.The real answer is almost certainly a combination of these factors, rather than one of them to the exclusion of the rest. But a new paper adds a surprising variable to the mix. What if the decline of crime in America started with the decline of cash?Cash is critical to the health of an underground economy, because it's anonymous, nearly untraceable, and easily stolen. This makes it the lifeblood of the black market.But Americans are rapidly abandoning cash thanks to credit cards, debit cards, and mobile payments. Half a century ago, cash was used in 80 percent of U.S. payments. Now that figure is about 50 percent, according to researchers.In the 1980s, the federal government switched from paper money to electronic benefit transfers. They didn't switch all at once. They switched one county at a time within states. This created a kind of randomly controlled environment for the researchers, who studied Missouri's counties to establish whether the areas that switched from welfare cash to electronic transfers saw a concurrent decline in crime.The results were striking: The shift away from cash was associated with a sigpificant decrease in the overall crime rate and the specific offenses of burglary and assault in Missouri and a decline in arrests. In other words, the counties saw a decline in specific crimes when they switched away from cash welfare.Perhaps most interestingly, they found that the switch to electronic transfers reduced robbery but not rape, suggesting that the move away from cash only had an impact on crime related to getting and spending cash.The move toward cashlessness in the U.S. continues quickly. Google now lets you attach money to emails to send to friends, which means that for some shoppers, pulling out your credit card could become as rare as finding exact change in your coin purse. It might seem absurd to imagine Visa, Square, and Google Wallet as crime-fighting technologies. But with a better understanding of how cash's availability affects crime, perhaps the government should consider killing more than just the penny.The government switched one county at a time within states favors researchers because ____ .A
it reduced cash payment in MissounB
it offered a randomly controlled environmentC
it helped to extend electronic transfers to the stateD
it saw a concurrent decline in crimes
考题
单选题请阅读 Passage 1,完成第21~25小题。Passage 1Why has crime in the U.S. declined so dramatically since the 1990s?Economists and sociologists have offered a bounty of reasons, including more police, more security technology, more economic growth, more immigration, more imprisonment, and so on.The real answer is almost certainly a combination of these factors, rather than one of them to the exclusion of the rest. But a new paper adds a surprising variable to the mix. What if the decline of crime in America started with the decline of cash?Cash is critical to the health of an underground economy, because it's anonymous, nearly untraceable, and easily stolen. This makes it the lifeblood of the black market.But Americans are rapidly abandoning cash thanks to credit cards, debit cards, and mobile payments. Half a century ago, cash was used in 80 percent of U.S. payments. Now that figure is about 50 percent, according to researchers.In the 1980s, the federal government switched from paper money to electronic benefit transfers. They didn't switch all at once. They switched one county at a time within states. This created a kind of randomly controlled environment for the researchers, who studied Missouri's counties to establish whether the areas that switched from welfare cash to electronic transfers saw a concurrent decline in crime.The results were striking: The shift away from cash was associated with a sigpificant decrease in the overall crime rate and the specific offenses of burglary and assault in Missouri and a decline in arrests. In other words, the counties saw a decline in specific crimes when they switched away from cash welfare.Perhaps most interestingly, they found that the switch to electronic transfers reduced robbery but not rape, suggesting that the move away from cash only had an impact on crime related to getting and spending cash.The move toward cashlessness in the U.S. continues quickly. Google now lets you attach money to emails to send to friends, which means that for some shoppers, pulling out your credit card could become as rare as finding exact change in your coin purse. It might seem absurd to imagine Visa, Square, and Google Wallet as crime-fighting technologies. But with a better understanding of how cash's availability affects crime, perhaps the government should consider killing more than just the penny.The shift away from cash in Missouri's counties resulted in ____.A
an unobvious decrease in the overall crime rateB
a decrease in certain crimes such as robbery and rapeC
a decline in crimes related to the use ofcashD
a decline in overall crimes
考题
单选题Which of the following is the best title for the passage?A
Which U.S. National Park Has the Most Visitors?B
Should National Parks Allow the Use of Cell Phones?C
What Did Yellowstone Do to Enrich Park Visitors’ Experience?D
Can Technology Transform the Way People Experience Nature?
考题
单选题The passage is mainly about ______.A
gay marriageB
gay divorceC
human rightsD
the infamous crime against nature
考题
单选题请阅读 Passage 1,完成第21~25小题。Passage 1Why has crime in the U.S. declined so dramatically since the 1990s?Economists and sociologists have offered a bounty of reasons, including more police, more security technology, more economic growth, more immigration, more imprisonment, and so on.The real answer is almost certainly a combination of these factors, rather than one of them to the exclusion of the rest. But a new paper adds a surprising variable to the mix. What if the decline of crime in America started with the decline of cash?Cash is critical to the health of an underground economy, because it's anonymous, nearly untraceable, and easily stolen. This makes it the lifeblood of the black market.But Americans are rapidly abandoning cash thanks to credit cards, debit cards, and mobile payments. Half a century ago, cash was used in 80 percent of U.S. payments. Now that figure is about 50 percent, according to researchers.In the 1980s, the federal government switched from paper money to electronic benefit transfers. They didn't switch all at once. They switched one county at a time within states. This created a kind of randomly controlled environment for the researchers, who studied Missouri's counties to establish whether the areas that switched from welfare cash to electronic transfers saw a concurrent decline in crime.The results were striking: The shift away from cash was associated with a sigpificant decrease in the overall crime rate and the specific offenses of burglary and assault in Missouri and a decline in arrests. In other words, the counties saw a decline in specific crimes when they switched away from cash welfare.Perhaps most interestingly, they found that the switch to electronic transfers reduced robbery but not rape, suggesting that the move away from cash only had an impact on crime related to getting and spending cash.The move toward cashlessness in the U.S. continues quickly. Google now lets you attach money to emails to send to friends, which means that for some shoppers, pulling out your credit card could become as rare as finding exact change in your coin purse. It might seem absurd to imagine Visa, Square, and Google Wallet as crime-fighting technologies. But with a better understanding of how cash's availability affects crime, perhaps the government should consider killing more than just the penny.Which of the following would be the most appropriate title for this text?A
Why has Crime in America Declined since the 1990sB
How the Decline of Cash Makes America a Safer CountryC
The Impacts of the Decline of Cash in AmericaD
The Relations between Cash and Crime
考题
单选题The author has written the passage mainly for ______.A
general readersB
power brokersC
economistsD
decision makers
考题
单选题Which of the following is the best title for the passage?A
American Soldiers in World War ⅡB
American Civil Rights MovementC
The Tuskegee AirmenD
Racial Discrimination in the U.S.
考题
单选题请阅读 Passage 1,完成第21~25小题。Passage 1Why has crime in the U.S. declined so dramatically since the 1990s?Economists and sociologists have offered a bounty of reasons, including more police, more security technology, more economic growth, more immigration, more imprisonment, and so on.The real answer is almost certainly a combination of these factors, rather than one of them to the exclusion of the rest. But a new paper adds a surprising variable to the mix. What if the decline of crime in America started with the decline of cash?Cash is critical to the health of an underground economy, because it's anonymous, nearly untraceable, and easily stolen. This makes it the lifeblood of the black market.But Americans are rapidly abandoning cash thanks to credit cards, debit cards, and mobile payments. Half a century ago, cash was used in 80 percent of U.S. payments. Now that figure is about 50 percent, according to researchers.In the 1980s, the federal government switched from paper money to electronic benefit transfers. They didn't switch all at once. They switched one county at a time within states. This created a kind of randomly controlled environment for the researchers, who studied Missouri's counties to establish whether the areas that switched from welfare cash to electronic transfers saw a concurrent decline in crime.The results were striking: The shift away from cash was associated with a sigpificant decrease in the overall crime rate and the specific offenses of burglary and assault in Missouri and a decline in arrests. In other words, the counties saw a decline in specific crimes when they switched away from cash welfare.Perhaps most interestingly, they found that the switch to electronic transfers reduced robbery but not rape, suggesting that the move away from cash only had an impact on crime related to getting and spending cash.The move toward cashlessness in the U.S. continues quickly. Google now lets you attach money to emails to send to friends, which means that for some shoppers, pulling out your credit card could become as rare as finding exact change in your coin purse. It might seem absurd to imagine Visa, Square, and Google Wallet as crime-fighting technologies. But with a better understanding of how cash's availability affects crime, perhaps the government should consider killing more than just the penny.It can be learned from the last paragraph that ____.A
the government is advised to advocate cashless paymentsB
America has become a cashless societyC
most people now send their friends money by emailD
it is absurd to fight against crime by using Visa, Square, and Google Wallet
考题
单选题This passage mainly tells us thatA
parents’ love for their children is great.B
it is dangerous for parents to reunite with their children in a disaster.C
we should develop reasonable plans for disasters.D
the U.S. government has been well prepared for disasters.
考题
单选题Which of the following best describes the relationship between the two passages?A
Passage 2 describes a significant. and discovery that contradicts the argument of Passage 1.B
Passage 2 offers a theory that supports the main point in Passage 1.C
Passage I provides a possible reason for the scientific inquiry presented in Passage 2.D
Passage 1 relates an anecdote that explains the popular misconception in Passage 2.E
Passage 2 provides a historical context for the discovery described in Passage 1.
考题
单选题请阅读 Passage 2，完成第 26~30小题。Passage 2Americans don't like to lose wars. Of course, a lot depends on how you define just what a war is. There are shooting wars-the kind that test patriotism and courage-and those are the kind at which the U.S. excels. But other struggles test those qualities too. What else was the Great Depression or the space race or the construction of the railroads? If American indulge in a bit of flag-when the job is done, they earned it.Now there is a similar challenge-global warming. The steady deterioration of the very climate of this very planet is becoming a war of the first order, and by any measure, the U.S. is losing. Indeed, if America is fighting at all, it's fighting on the wrong side. The U.S. produces nearly a quarter of the world's greenhouse gases each year and has stubbomly made it clear that it doesn't intend to do a whole lot about it. Although 174 nations approved the admittedly flawed Kyoto accords to reduce carbon levels, the U.S. walked away from them. There are vague promises of manufacturing fuel from herbs or powering cars with hydrogen. But for a country that tightly cites patriotism as one of its core values, the U.S. is taking a pass on what might be the most patriotic struggle of all. It's hard to imagine a bigger fight than one for the survival ofa country's coasts and farms, the health ofits people and stability ofits economy.The rub is, if the vast majority of people increasingly agree that climate change is a global emergency, there's far less agreement on how to fix it. Industry offers its plans, which too often would fix little. Environmentalists offer theirs, which too often amount to native wish lists that could weaken America's growth. But let's assume that those mterested parties and others will always bent the table and will always demand that their voices be heard and that their needs be addressed. What would an aggressive, ambitious, effective plan look like-one that would leave the U.S. both environmentally safe and economically sound?Halting climate change will be far harder. One of the more conservative plans for addressing the problem calls for a reduction of 25 billion tons of carbon emissions over the next 52 years. And yet by devising a consistent strategy that mixes short-time profit with long-range objective and blends pragmatism with ambition, the U.S. can, without major damage to the economy, help halt the worst effects of climate change and ensure the survival of its way of life for future generations. Money will do some of the work, but what's needed most is will. I'm not saying the challenge isn't almost overwhelmmg, says Fred Krupp. But this is America, and America has risen to these challenges before.What does the passage mainly discuss?A
Human wars.B
Economic crisis.C
America 's environmental policies.D
Global environment in general.
考题
单选题It can be learned from the passage that in the U.S., _____.A
there is a shortage of geriatric physiciansB
more training is needed for geriatric physiciansC
demand for geriatric physicians varies across statesD
care for the elderly will depend more on geriatric physicians
考题
单选题Which of the following is an appropriate title for the passage?A
California Lawmakers Vote to Raise Smoking Age to 21B
San Francisco Increased the Age to Buy Tobacco Products to 21C
Hawaii Has Already Raised the Age Limit to Buy TobaccoD
A California Bill Faces Opposition from Many Republicans
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