单选题It would be disastrous for developing countries,______ at least 16 cities are expected to have more than 12 million people ______ by the end of this decade, failing to give priority to public transport.A where; eachB which; /C that, everyoneD in which;

共用题干
Brain Drain

1.Brain drain is a phenomenon under which"people of a nation move to another nation due to financial benefits and also due to economical reasons,but there are many more reasons behind it". If we think deeply to the topic,we would find that this phenomenon has more disadvantages than advantages.
2.This phenomenon has many advantages for receiving countries which will automatically benefit from the skills and talents of immigrated people who were educated and qualified in their home countnes.
3.However,developing countries are deeply affected by this phenomenon since they are deprived from millions of their skilled workers, doctors,hardworking Engineers,and billions of man power. Those elites represent the backbone of their economies and once they travel abroad,their economies will not flourish and promote.In fact,there are many reasons behind brain drain.Firstly,the Government is the first responsible for brain drain. The salaries paid by local companies are much less than multinational foreign companies,which pushes millions of intelligent,hardworking Engineers to leave their native countries to look for a better life and opportunities.Secondly,the status and facilities provided by foreign companies are much higher in quality and quantity.Also,some people find it a matter of pride and dignity to work as an employee in foreign countries.
4.But we have to mention that brain drain does not only affect developing countries but also has some advantages for them.People living abroad help foreigners to know about their cultures and traditions.Also,they give information about various natural beauties and tourist spots in their home countries,which encourages tourists to visit them. This in turn increases tourist income.Brain drain also helps in increasing their foreign exchanges.
5.But at last you would find that brain drain has more disadvantages than advantages on developing or poor countries.So,to stop brain drain,local governments should make people aware of its harmful effects.Also Government should provide opportunities to their elites and should provide them with handsome salary so that they can serve their own mother nation.

People living abroad help foreigners to know about______.
A:its harmful effects
B:immigrated people
C:the local government
D:their cultures and traditions
E:the hardworking engineers
F: in quality and quantity

资料：Up to 80 per cent of the world’s middle classes will live in developing countries by 2030 thanks to surprising recent gains in poverty reduction, according to a United Nations report published on Thursday.
“Never in history have the living conditions and prospects of so many people changed so dramatically and so fast.” concludes the UN’s latest Development Report. “The world is witnessing an epochal ‘global rebalancing’.”
Underpinning the improvements in the human development index（HDI） was rapid growth in countries such as China, India and Brazil, with China and India having doubled per capita economic output in less than 20 years. But the study stressed that growth and improvements in HDI spread far beyond the four Bric countries of Brazil, Russia, India and China, and included at least 40 countries that had accompanied greater economic dynamism with effective poverty-reduction policies.
Afghanistan, Sierra Leone, Ethiopia, Rwanda and Angola were among 14 countries that have recorded gains in HDI of more than 2 per cent a year since 2000. Partly as a result, the report found that worldwide extreme income poverty has plunged from 43 per cent in 1990 to just 22 per cent in 2008, including more than 500m being lifted out of poverty in China alone. The report stated that such gains had already helped the world achieve the main poverty eradication goal of the so-called Millennium Development Goals, which called for the share of people living on less than $1.25 a day to be cut by half from 1990 to 2015.
Underpinning this poverty reduction was developing countries’ increasing share of global trade, which grew from 25 per cent to 47 per cent between 1980 and 2010. “The south as a whole is driving global economic growth and societal change for the first time in centuries,” says the report.
The report found that trade among developing countries was the biggest factor in that expansion, increasing from less than 10 per cent of total global trade to more than 30 per cent. “Trade between countries in the south will overtake that between developed nations,” the report said.

“More than 500m being lifted out of poverty in China alone” illustrates ______.

A.the economic development of China is important
B.the role of some developing countries is significant for poverty reduction
C.14 countries are developing faster than China
D.it is crucial to make a clear goal first

资料：Up to 80 per cent of the world’s middle classes will live in developing countries by 2030 thanks to surprising recent gains in poverty reduction, according to a United Nations report published on Thursday.
“Never in history have the living conditions and prospects of so many people changed so dramatically and so fast.” concludes the UN’s latest Development Report. “The world is witnessing an epochal ‘global rebalancing’.”
Underpinning the improvements in the human development index（HDI） was rapid growth in countries such as China, India and Brazil, with China and India having doubled per capita economic output in less than 20 years. But the study stressed that growth and improvements in HDI spread far beyond the four Bric countries of Brazil, Russia, India and China, and included at least 40 countries that had accompanied greater economic dynamism with effective poverty-reduction policies.
Afghanistan, Sierra Leone, Ethiopia, Rwanda and Angola were among 14 countries that have recorded gains in HDI of more than 2 per cent a year since 2000. Partly as a result, the report found that worldwide extreme income poverty has plunged from 43 per cent in 1990 to just 22 per cent in 2008, including more than 500m being lifted out of poverty in China alone. The report stated that such gains had already helped the world achieve the main poverty eradication goal of the so-called Millennium Development Goals, which called for the share of people living on less than $1.25 a day to be cut by half from 1990 to 2015.
Underpinning this poverty reduction was developing countries’ increasing share of global trade, which grew from 25 per cent to 47 per cent between 1980 and 2010. “The south as a whole is driving global economic growth and societal change for the first time in centuries,” says the report.
The report found that trade among developing countries was the biggest factor in that expansion, increasing from less than 10 per cent of total global trade to more than 30 per cent. “Trade between countries in the south will overtake that between developed nations,” the report said.

All of the following are factors for poverty reduction except ______.

A.greater economic dynamism
B.aid from developed countries
C.changes of developing countries
D.trade among developing countries

The world population is expected to rise to more than nine billion by 2050，one-third of all people______expected to live in cities。

A.has been
B.are
C.have been
D.have succeeded in

共用题干
Cities“Worse to Live in Than 20 Years Ago”
One thousand people were surveyed about a range of issues which affect cities,and the re-markable findings show that life in today's mega-cities is so stressful that at least two-thirds of those currently living in big cities would like to relocate to the countryside or a small town.
The stress of the getting from A to B in big cities is at the top of the list of problems.For many people,the daily commute to work is a source of frustration.40% of the people in the sur-vey have suffered from road rage while stuck in traffic on the way to work.The cost of public transport is also a serious problem.Many people think the price of underground and bus travel is too high and that they have to devote more than 10% of their salary to transport costs.
The general cost of living in cities is another problem.The high property prices in most big cities put buying a property out of reach of most first-time buyers.Many young people are priced out of the housing market,and have to take in lodgers to make ends meet,or rent over-priced flats miles away from the city centre .In London,for instance,the price of buying even a one-bedroom flat is so prohibitive that many have given up even considering putting money aside for a deposit.
Another issue facing people who live in cities is rising crime.Crime rates have rocketed in many big cities,and many say there are several dangerous no-go areas in their city.Fear of crime is on the increase-street crimes,such as mugging and assault,are now very common-and many are afraid of going out at night alone.
Many were also concerned by the lack of green spaces and play facilities for children.Most major conurbations（有卫星城的大都市）surveyed have a far smaller number of parks and gar- dens than a generation ago.Planning permission seems to have been given for an ever-greater number of supermarkets,office developments and apartments on sites where there were previously green spaces.Many of the respondents in the survey said they felt stressed and suffocated in the city,a problem which is compounded by pollution.
And finally,the majority of people in the survey were fed up with the constant noise pollu-lion—the roar of traffic , the sound of loud music blaring（发刺耳声）out of a neighbour's win-dow,and the constant sound of activity.It is not surprising,then,that the levels of stress-related illnesses among people who live in cities are higher than ever before .Big cities,once a mecca for ambitious people seeking fameJ and fortune,are now less and less popular among people of all ages .Perhaps the 21st century is set to be the century of the small town and the countryside.

Most people in the survey who live in big cities would like to move somewhere smaller.
A: Right
B: Wrong
C:.Not mentioned

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第三篇

Global Cancer Rates to Rise by 50% by 2020

The number of new cancer cases worldwide is expected to increase by 50%by the year
2020.But a new report suggests that as many as a third of new cancers could be avoided
by adopting healthier lifestyles and through public health action.
The World Cancer Report,released by the International Agency for Research on
Cancer,shows that cancer has now emerged as a major public health threat in developing
countries as well as rich ones.
Overall,cancer was responsible for 12%of all deaths in 2000.But in many countries
more than a quarter of all deaths are caused by cancer.
The report shows that 1 0 million new cancers were diagnosed globally in 2000,and that
number is expected to rise to 15 million by 2020.Researchers say most of that increase will
mainly be due to steadily aging populations in both developed and developing countries and
current trends in smoking and other unhealthy habits.
"Cancer has emerged as a major public health problem in developing countries for the
first time, matching its effect in industrialized（工业化的）countries , " said researcher Paul
Kleihues,MD,director of IARC,in a news release."Once considered a'Western'
disease,the Report highlights that more than 50 percent of the world's cancer burden,in
terms of both numbers of cases and deaths,already occurs in developing countries."
The risk of being diagnosed with cancer in developed countries is double that in less-
developed ones.However,the risk of dying from cancer is much higher in developing
countries , where 80% of cancer patients already have late-stage incurable tumors（肿瘤）
at the time of diagnosis.
Researchers say cancer rates have traditionally been higher in developed countries due
to greater exposure to tobacco,occupational carcinogens（致癌物）,and an unhealthy
Western diet and lifestyle.As less-developed countries become industrialized and more
prosperous,they tend to adopt the high-fat diet and low physical activity levels typically seen
in the West,which increase cancer rates.

The report says that steps could be taken to reduce about
A:50% of new cancers.
B:33% of new cancers.
C:12% of new cancers.
D:80% of new cancers.

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第三篇

Global Cancer Rates to Rise by 50% by 2020

The number of new cancer cases worldwide is expected to increase by 50%by the year
2020.But a new report suggests that as many as a third of new cancers could be avoided
by adopting healthier lifestyles and through public health action.
The World Cancer Report,released by the International Agency for Research on
Cancer,shows that cancer has now emerged as a major public health threat in developing
countries as well as rich ones.
Overall,cancer was responsible for 12%of all deaths in 2000.But in many countries
more than a quarter of all deaths are caused by cancer.
The report shows that 1 0 million new cancers were diagnosed globally in 2000,and that
number is expected to rise to 15 million by 2020.Researchers say most of that increase will
mainly be due to steadily aging populations in both developed and developing countries and
current trends in smoking and other unhealthy habits.
"Cancer has emerged as a major public health problem in developing countries for the
first time, matching its effect in industrialized（工业化的）countries , " said researcher Paul
Kleihues,MD,director of IARC,in a news release."Once considered a'Western'
disease,the Report highlights that more than 50 percent of the world's cancer burden,in
terms of both numbers of cases and deaths,already occurs in developing countries."
The risk of being diagnosed with cancer in developed countries is double that in less-
developed ones.However,the risk of dying from cancer is much higher in developing
countries , where 80% of cancer patients already have late-stage incurable tumors（肿瘤）
at the time of diagnosis.
Researchers say cancer rates have traditionally been higher in developed countries due
to greater exposure to tobacco,occupational carcinogens（致癌物）,and an unhealthy
Western diet and lifestyle.As less-developed countries become industrialized and more
prosperous,they tend to adopt the high-fat diet and low physical activity levels typically seen
in the West,which increase cancer rates.

The risk of dying from cancer in developed countries is
A:double that in developing countries.
B:much higher than that in developing countries.
C:the same as that in developing countries.
D:much lower than that in developing countries.

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第三篇

Global Cancer Rates to Rise by 50% by 2020

The number of new cancer cases worldwide is expected to increase by 50%by the year
2020.But a new report suggests that as many as a third of new cancers could be avoided
by adopting healthier lifestyles and through public health action.
The World Cancer Report,released by the International Agency for Research on
Cancer,shows that cancer has now emerged as a major public health threat in developing
countries as well as rich ones.
Overall,cancer was responsible for 12%of all deaths in 2000.But in many countries
more than a quarter of all deaths are caused by cancer.
The report shows that 1 0 million new cancers were diagnosed globally in 2000,and that
number is expected to rise to 15 million by 2020.Researchers say most of that increase will
mainly be due to steadily aging populations in both developed and developing countries and
current trends in smoking and other unhealthy habits.
"Cancer has emerged as a major public health problem in developing countries for the
first time, matching its effect in industrialized（工业化的）countries , " said researcher Paul
Kleihues,MD,director of IARC,in a news release."Once considered a'Western'
disease,the Report highlights that more than 50 percent of the world's cancer burden,in
terms of both numbers of cases and deaths,already occurs in developing countries."
The risk of being diagnosed with cancer in developed countries is double that in less-
developed ones.However,the risk of dying from cancer is much higher in developing
countries , where 80% of cancer patients already have late-stage incurable tumors（肿瘤）
at the time of diagnosis.
Researchers say cancer rates have traditionally been higher in developed countries due
to greater exposure to tobacco,occupational carcinogens（致癌物）,and an unhealthy
Western diet and lifestyle.As less-developed countries become industrialized and more
prosperous,they tend to adopt the high-fat diet and low physical activity levels typically seen
in the West,which increase cancer rates.

According to Paul Kleihues,cancer was once regarded as
A:an incurable disease.
B:a mysterious disease.
C:a"Western"disease.
D:a world disease.

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第二篇

Chronic Diseases: The World's Leading Killer

Chronic diseases are the leading cause of death in the world.Yet health experts say
these conditions are often the most preventable.Chronic diseases include heart disease,
stroke,cancer,diabetes（糖尿病）and lung disorders.
The World Health Organization says chronic diseases lead to about seventeen million
early deaths each year.This United Nations agency expects more than three hundred eighty
million people to die of chronic diseases by 2015.It says about eighty percent of the deaths
will happen in developing nations.
The WHO says chronic diseases now cause two-thirds of all deaths in the Asia-Pacific
area,ln ten years it could be almost three-fourths.People are getting sick in their most
economically productive years.In fact,experts say chronic diseases are killing more
middle-aged people in poorer countries than in wealthier ones.
The WHO estimates that chronic diseases will cost China alone more than five hundred
thousand million dollars in the next ten years.That estimate represents the costs of medical
treatment and lost productivity.Russia and lndia are also expected to face huge economic
losses.
Kim Hak-Su is the head of the United Nations Economic and Social Commission for
Asia and the Pacific.Last week in Bangkok he presented a WHO report on the problem.It
says deaths from chronic diseases have increased largely as the result of economic gains in
many countries.
The report details the latest findings from nine countries.They include Brazil,Britain,
Canada,China,India and Nigeria.The others are Pakistan,Russia and Tanzania.
Mister Kim says infectious and parasitic（寄生的）diseases have until recently been the
main killers in Asia and the Pacific.But he says they are no longer the major cause of death in
most countries.
Health officials say as many as eighty percent of deaths from chronic diseases could be
prevented.They say an important tool for governments is to restrict the marketing of alcohol
and tobacco to young people.Also,more programs are needed to urge healthy eating and
more physical activity.
UN officials aim through international action to reduce chronic-disease deaths by two
percent each year through 2015.They say meeting that target could save thirty-six million
lives.That includes twenty-five million in Asia and the Pacific.

How many people in developing countries will probably die of chronic diseases by 2015?
A: More than 17 million.
B:More than 380 million.
C: More than 304 million.
D: More than 25 mullion.

资料：Up to 80 per cent of the world’s middle classes will live in developing countries by 2030 thanks to surprising recent gains in poverty reduction, according to a United Nations report published on Thursday.
“Never in history have the living conditions and prospects of so many people changed so dramatically and so fast.” concludes the UN’s latest Development Report. “The world is witnessing an epochal ‘global rebalancing’.”
Underpinning the improvements in the human development index（HDI） was rapid growth in countries such as China, India and Brazil, with China and India having doubled per capita economic output in less than 20 years. But the study stressed that growth and improvements in HDI spread far beyond the four Bric countries of Brazil, Russia, India and China, and included at least 40 countries that had accompanied greater economic dynamism with effective poverty-reduction policies.
Afghanistan, Sierra Leone, Ethiopia, Rwanda and Angola were among 14 countries that have recorded gains in HDI of more than 2 per cent a year since 2000. Partly as a result, the report found that worldwide extreme income poverty has plunged from 43 per cent in 1990 to just 22 per cent in 2008, including more than 500m being lifted out of poverty in China alone. The report stated that such gains had already helped the world achieve the main poverty eradication goal of the so-called Millennium Development Goals, which called for the share of people living on less than $1.25 a day to be cut by half from 1990 to 2015.
Underpinning this poverty reduction was developing countries’ increasing share of global trade, which grew from 25 per cent to 47 per cent between 1980 and 2010. “The south as a whole is driving global economic growth and societal change for the first time in centuries,” says the report.
The report found that trade among developing countries was the biggest factor in that expansion, increasing from less than 10 per cent of total global trade to more than 30 per cent. “Trade between countries in the south will overtake that between developed nations,” the report said.

The passage mainly ______.

A.discuss why developing countries are playing major role
B.illustrate a theory for poverty reduction
C.explain reasons behind a report
D.interpret the role of trade for developing countries

Injuries from rear-end ______ were down，which could mean more than $45 million saved on accident damage per year.

A.collisions
B.combats
C.contradictions
D.conflicts

共用题干
U.S.Signs Global Tobacco Treaty 1 The United States has taken the first step toward approving a global tobacco treaty that promises to help control the deadly effects of tobacco use throughout the world.Health and Human Services Secretary, Tommy Thompson, signed the Framework Convention on Tobacco Control(FCTC)this week at the United Nations.The Senate must still approve the treaty before the U.S.can implement its provisions.
2 The FCTC was developed by the World Health Organization and approved by members of the World Health Assembly,including the United States,last year.Countries that ratify it would be required to enact strict tobacco control policies.
3 For instance,cigarettes sold in those countries would have to have health warnings on at least 30% of the front and back of every pack.The treaty calls for higher tobacco taxes,restrictions on smoking in public places,and more promotion of tobacco prevention and cessation programs.It also requires bans on tobacco advertising,though there are some exceptions for countries like the United States,where the Constitution prohibits such an outright ban.
4 The impact of the treaty could be huge.The World Health Organization estimates that tobacco use kills nearly 5 million people worldwide every year.In the U.S.alone,about 440,000 people die each year from tobacco-related illnesses;about one-third of all cancers in the U.S.are caused by tobacco use.If current trends continue,WHO estimates,by 2025 tobacco will kill 10 million people each year.
5 The treaty must be ratified by at least 40 countries before it can take effect.So far,109 countries have signed it,and 1 2 have ratified it.

Many more countries have signed the FCTC than those that______.
A:have ratified it
B:approving it
C:implement its provisions
D:restrict smoking in public places
E:caused by tobacco use
F:including higher tobacco taxes

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第二篇

Need for Emphasis on Treatment

AIDS programs in developing countries put too little emphasis on treatment,the World Health Organization
said Tuesday,asking for more small community-based clinics to be opened to treat HIV-infected people.
An estimated 36 million to 46 million people are living with AIDS,two-thirds of them in Africa,but
only 440,000 people in developing countries were receiving treatment by the end of 2003,the UN health
agency said in its annual report.
"Without treatment,all of them will die a premature and in most cases painful death,"the WHO said in
the 169-page World Health Report.
WHO Director General Lee Jong-wook said community-based treatment should be added to disease pre-
vention and care for sufferers in AIDS programs.
"Future generations will judge our time in large part by our response to the AIDS disease,"Lee said.
"By tackling it decisively we will also be building health systems that can meet the health needs of
today and tomorrow. This is a historic opportunity we cannot afford to miss,"he added.
Antiretroviral drugs enable people hit by AIDS to live longer. The annual cost of treatment,which was
about $10,000 when the drugs were first developed,has dropped to about$150.
Treatment programs also help AIDS prevention efforts,the report said,citing great demands for testing
and counseling where treatment has been made available.
Good counseling in turn leads to more effective prevention in those who are uninfected,and significantly
reduces the potential for HIV carriers to pass on the infection,the report said.
Since its discovery in the 1980s,more than 20 million have died of AIDS,mostly in poor countries.

How many people have died of AIDS so far?
A:36 million.
B:46 million.
C:Around 440, 000.
D:More than 20 million.

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第三篇

Global Cancer Rates to Rise by 50% by 2020

The number of new cancer cases worldwide is expected to increase by 50%by the year
2020.But a new report suggests that as many as a third of new cancers could be avoided
by adopting healthier lifestyles and through public health action.
The World Cancer Report,released by the International Agency for Research on
Cancer,shows that cancer has now emerged as a major public health threat in developing
countries as well as rich ones.
Overall,cancer was responsible for 12%of all deaths in 2000.But in many countries
more than a quarter of all deaths are caused by cancer.
The report shows that 1 0 million new cancers were diagnosed globally in 2000,and that
number is expected to rise to 15 million by 2020.Researchers say most of that increase will
mainly be due to steadily aging populations in both developed and developing countries and
current trends in smoking and other unhealthy habits.
"Cancer has emerged as a major public health problem in developing countries for the
first time, matching its effect in industrialized（工业化的）countries , " said researcher Paul
Kleihues,MD,director of IARC,in a news release."Once considered a'Western'
disease,the Report highlights that more than 50 percent of the world's cancer burden,in
terms of both numbers of cases and deaths,already occurs in developing countries."
The risk of being diagnosed with cancer in developed countries is double that in less-
developed ones.However,the risk of dying from cancer is much higher in developing
countries , where 80% of cancer patients already have late-stage incurable tumors（肿瘤）
at the time of diagnosis.
Researchers say cancer rates have traditionally been higher in developed countries due
to greater exposure to tobacco,occupational carcinogens（致癌物）,and an unhealthy
Western diet and lifestyle.As less-developed countries become industrialized and more
prosperous,they tend to adopt the high-fat diet and low physical activity levels typically seen
in the West,which increase cancer rates.

Which of the following statements is NOT correct?
A:There were 1 0 million cancer patients worldwide in 2000.
B:Generally,cancer accounted for 12% of all deaths in 2000.
C:Cancer is the cause of over 25%of all deaths in many countries.
D:It is expected that global cancer rates will go up by 50%by 2020.

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Need for Emphasis on Treatment
AIDS programs in developing countries put too little emphasis on treatment,the World Health Organization said Tuesday,asking for more small community-based clinics to be opened to treat HIV-infected people?
An estimated 36 million to 46 million people are living with AIDS,two-thirds of them in Africa,but only 440,000 people in developing countries were receiving treatment by the end of 2003,the UN health agency said in its annual report.
"Without treatment,all of them will die a premature and in most cases painful death,"the WHO said in the? 169-page World Health Report.
WHO Director General Lee Jong-wook said community-based treatment should be added to disease pre-vention and care for sufferers in AIDS programs.
"Future generations will judge our time in large part by our response to the AIDS disease,"Lee said."By tackling it decisively we will also be building health systems that can meet the health needs of today and tomorrow.This is a historic opportunity we cannot afford to miss,"he added.
Antiretroviral drugs enable people hit by AIDS to live longer.The annual cost of treatment,which was about$10,000 when the drugs were first developed,has dropped to about$150.
Treatment programs also help AIDS prevention efforts,the report said,citing great demands for testing and counseling where treatment has been made available.
Good counseling in turn leads to more effective prevention in those who are uninfected,and significantly reduces the potential for HIV carriers to pass on the infection,the report said.
Since its discovery in the l980s,more than 20 million have died of AIDS,mostly in poor countries?

Which is true of many AIDS sufferers in developing countries?
A:They put too little emphasis on treatment.
B:They are not receiving any treatment.
C:They refuse to be treated.
D:They live longer than those in developed countries.

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第二篇

Need for Emphasis on Treatment

AIDS programs in developing countries put too little emphasis on treatment,the World Health Organization
said Tuesday,asking for more small community-based clinics to be opened to treat HIV-infected people.
An estimated 36 million to 46 million people are living with AIDS,two-thirds of them in Africa,but
only 440,000 people in developing countries were receiving treatment by the end of 2003,the UN health
agency said in its annual report.
"Without treatment,all of them will die a premature and in most cases painful death,"the WHO said in
the 169-page World Health Report.
WHO Director General Lee Jong-wook said community-based treatment should be added to disease pre-
vention and care for sufferers in AIDS programs.
"Future generations will judge our time in large part by our response to the AIDS disease,"Lee said.
"By tackling it decisively we will also be building health systems that can meet the health needs of
today and tomorrow. This is a historic opportunity we cannot afford to miss,"he added.
Antiretroviral drugs enable people hit by AIDS to live longer. The annual cost of treatment,which was
about $10,000 when the drugs were first developed,has dropped to about$150.
Treatment programs also help AIDS prevention efforts,the report said,citing great demands for testing
and counseling where treatment has been made available.
Good counseling in turn leads to more effective prevention in those who are uninfected,and significantly
reduces the potential for HIV carriers to pass on the infection,the report said.
Since its discovery in the 1980s,more than 20 million have died of AIDS,mostly in poor countries.

Which is true of many AIDS sufferers in developing countries?
A:They put too little emphasis on treatment.
B:They are not receiving any treatment.
C:They refuse to be treated.
D:They live longer than those in developed countries.