Text 1 The influenza season is just getting started in the United States,and it already promises to be more severe than usual.Hospital emergency rooms are filling up with flu sufferers,and pharmacies

Text 1 The influenza season is just getting started in the United States,and it already promises to be more severe than usual.Hospital emergency rooms are filling up with flu sufferers,and pharmacies have reported medicine shortages.Twelve children had died as of last month.To make matters worse,in Australia,which experienced its flu season four to six months ago,the current vaccine appeared to be only about 10 percent effective against tlus year's dominant strain.Yet as bad as this winter's epidemic is,it won't compare with the flu pandemic that is almost certainly on the horizon if we don't dedicate energy and resources to a universal vaccine.The 1918 Spanish flu epidemic killed 50 million t0 100 million around the globe.Given the century of medical progress since then,one might conclude that we are far better prepared today to deal with such a worldwide catastrophe.Unfortunately,the opposite is true.The world has about four times the number of inhabitants it did in 1918,including hundreds of millions of people,poultry and pigs living close together.This provides a potent biologic mixing bowl and natural influenza virus mutation factory.When a pandemic does strike,we'll be in trouble in part because American hospitals and pharruacies keep in stock no more than a few days supply of most lifesaving drugs,almost all of which are made in Asia.Worldwide manufacturing and shipping are highly susceptible to disruption,which could mean shortages in many areas.A 1918-type influenza pandemic could cause ruin on the order of what the Black Death did t0 14th-century Europe,but on a global scale.Our current vaccines are based on 1940s research.Limited global manufacturing capacity combined with the five to six months it takes to make these vaccines mean many people would never even have a chance to be vaccinated.Little is being done to aggressively change this unacceptable situation.We will have worldwide flu pandemics.Only their severity is unknown.The only real solution is a universal vaccine that effectively attacks all influenza A strains,with reliable protection lasting for years,like other modem vaccines.Although the National Institutes of Health has publicly declared developing a vaccine a priority,it has only about$32 million this year specifically for such research.The Biomedical Advanced Research and Development Authority,the other federal agency responsible for developing and making available new vaccines for emergency response,has in fiscal year 2017 0nly a single project for$43 million supporting game-changing infiuenza vaccines.By contrast,the search for an H.I,V.vaccine-still a scientific long shot-receives Sl billion annually.We estimate that intemational govemments,vaccine manufacturers and the philanthropic community must make a similar commitment to influenza vaccine research if the kind of vaccine we need is to developed in the next 10 years.But there is no apparent effort to make these vaccines a priority in the current administration 24.What govemments and the philanthropic communities are expected to do?

A.Developing a new vaccine.
B.Providing more funds.
C.Setting up a new project.
D.Supporting philanthropic causes.

Text 4 As the nation experiences one of the worst flu seasons in years,thousands of Americans have already died from influenza,according to the U.S.Centers for Disease Control and Prevention.Though the season peaked in February,the CDC recently warned that we should prepare for a second wave of cases to hit before we emerge from the season entirely.Now,it appears more than 50,000 could die from the flu before the season ends.Perhaps most troubling is that this year marks a century since the deadliest viral outbreak in human history,which claimed the lives of 670,000 American men,women and children and as many as 50 to 100 million people worldwide.Among the lessons medical researchers gleaned from the catastrophic event is the critical importance of getting vaccinated.It's a lesson that much of the public continues to ignore,even as our scientific understanding of communicable diseases continues to grow.-The strain in tlus flu season,H3N2,is particularly nasty.It's similar to the HINl strain that set off the 1918 influenza pandemic,and it has resulted in high rates of death,particularly among the elderly.Researchers have struggled to create effective vaccines for the H3N2 strain;this year's flu vaccine is only about 36 percent effective at protecting against the virus,compared to an average of 45 percent over the past seven years.Nonetheless,it does provide some protection,and the unvaccinated are hit much harder without it.Earlier this year,a healthy young man from Pittsburgh did not get vaccinated and died soon afier getting the flu.While low vaccine efficacy means that those who get vaccinated can still contract the flu,it remains common sense and good civic behavior to get vaccinated.As a result of herd immunity,even low efficacy vaccines are enough to curb a pandemic from happening if vaccination rates are high.Flu vaccines did not exist during the pandemic of 1918,which is why it was so deadly.Yet year after year few Americans bother to get vaccinated.In economic terms,the herd immunity benefits of vaccination are a"public good."If I am vaccinated,I cannot exclude anyone from the herd immunity that I now offer.Similarly,someone enjoying my herd immunity does not diminish someone else's ability to enjoy my herd immunity.What typically happens when a public good like the flu vaccine is available is that many,perhaps most,people underinvest.They free ride off other people who get the vaccine.If too many people opt out of vaccination,communities become wlnerable to flu epidemics.According to the CDC,only 38 percent of the population chose to get vaccinated as ofNovember 2017.Low rates ofvaccination are particularly dangerous for children and the elderly,who are especially susceptible to influenza.As individuals,we have veU little control over the strain of the flu that emerges in a given year,or the efficacy of a vaccine,but we do have complete control over whether we get vaccinated.The public's response to a bad fiu outbreak or to low vaccine efficacy should be an increase in flu vaccinations,not a decrease.36.We can infer from the first paragraph that

A.it is not difficult to control the influenza.
B.the second wave of cases may be impending.
C.the influenza reached its peak in February.
D.50 thousand people died from the flu.

Text 1 The influenza season is just getting started in the United States,and it already promises to be more severe than usual.Hospital emergency rooms are filling up with flu sufferers,and pharmacies have reported medicine shortages.Twelve children had died as of last month.To make matters worse,in Australia,which experienced its flu season four to six months ago,the current vaccine appeared to be only about 10 percent effective against tlus year's dominant strain.Yet as bad as this winter's epidemic is,it won't compare with the flu pandemic that is almost certainly on the horizon if we don't dedicate energy and resources to a universal vaccine.The 1918 Spanish flu epidemic killed 50 million t0 100 million around the globe.Given the century of medical progress since then,one might conclude that we are far better prepared today to deal with such a worldwide catastrophe.Unfortunately,the opposite is true.The world has about four times the number of inhabitants it did in 1918,including hundreds of millions of people,poultry and pigs living close together.This provides a potent biologic mixing bowl and natural influenza virus mutation factory.When a pandemic does strike,we'll be in trouble in part because American hospitals and pharruacies keep in stock no more than a few days supply of most lifesaving drugs,almost all of which are made in Asia.Worldwide manufacturing and shipping are highly susceptible to disruption,which could mean shortages in many areas.A 1918-type influenza pandemic could cause ruin on the order of what the Black Death did t0 14th-century Europe,but on a global scale.Our current vaccines are based on 1940s research.Limited global manufacturing capacity combined with the five to six months it takes to make these vaccines mean many people would never even have a chance to be vaccinated.Little is being done to aggressively change this unacceptable situation.We will have worldwide flu pandemics.Only their severity is unknown.The only real solution is a universal vaccine that effectively attacks all influenza A strains,with reliable protection lasting for years,like other modem vaccines.Although the National Institutes of Health has publicly declared developing a vaccine a priority,it has only about$32 million this year specifically for such research.The Biomedical Advanced Research and Development Authority,the other federal agency responsible for developing and making available new vaccines for emergency response,has in fiscal year 2017 0nly a single project for$43 million supporting game-changing infiuenza vaccines.By contrast,the search for an H.I,V.vaccine-still a scientific long shot-receives Sl billion annually.We estimate that intemational govemments,vaccine manufacturers and the philanthropic community must make a similar commitment to influenza vaccine research if the kind of vaccine we need is to developed in the next 10 years.But there is no apparent effort to make these vaccines a priority in the current administration 22.We can infer from Paragraph 2 that

A.Spanish flu is one of the most severe epidemics.
B.we still couldn't effectively cope with epidemics.
C.medical course has made great progress in the past century.
D.there is an increasing number of people living with poultry.

Text 4 As the nation experiences one of the worst flu seasons in years,thousands of Americans have already died from influenza,according to the U.S.Centers for Disease Control and Prevention.Though the season peaked in February,the CDC recently warned that we should prepare for a second wave of cases to hit before we emerge from the season entirely.Now,it appears more than 50,000 could die from the flu before the season ends.Perhaps most troubling is that this year marks a century since the deadliest viral outbreak in human history,which claimed the lives of 670,000 American men,women and children and as many as 50 to 100 million people worldwide.Among the lessons medical researchers gleaned from the catastrophic event is the critical importance of getting vaccinated.It's a lesson that much of the public continues to ignore,even as our scientific understanding of communicable diseases continues to grow.-The strain in tlus flu season,H3N2,is particularly nasty.It's similar to the HINl strain that set off the 1918 influenza pandemic,and it has resulted in high rates of death,particularly among the elderly.Researchers have struggled to create effective vaccines for the H3N2 strain;this year's flu vaccine is only about 36 percent effective at protecting against the virus,compared to an average of 45 percent over the past seven years.Nonetheless,it does provide some protection,and the unvaccinated are hit much harder without it.Earlier this year,a healthy young man from Pittsburgh did not get vaccinated and died soon afier getting the flu.While low vaccine efficacy means that those who get vaccinated can still contract the flu,it remains common sense and good civic behavior to get vaccinated.As a result of herd immunity,even low efficacy vaccines are enough to curb a pandemic from happening if vaccination rates are high.Flu vaccines did not exist during the pandemic of 1918,which is why it was so deadly.Yet year after year few Americans bother to get vaccinated.In economic terms,the herd immunity benefits of vaccination are a"public good."If I am vaccinated,I cannot exclude anyone from the herd immunity that I now offer.Similarly,someone enjoying my herd immunity does not diminish someone else's ability to enjoy my herd immunity.What typically happens when a public good like the flu vaccine is available is that many,perhaps most,people underinvest.They free ride off other people who get the vaccine.If too many people opt out of vaccination,communities become wlnerable to flu epidemics.According to the CDC,only 38 percent of the population chose to get vaccinated as ofNovember 2017.Low rates ofvaccination are particularly dangerous for children and the elderly,who are especially susceptible to influenza.As individuals,we have veU little control over the strain of the flu that emerges in a given year,or the efficacy of a vaccine,but we do have complete control over whether we get vaccinated.The public's response to a bad fiu outbreak or to low vaccine efficacy should be an increase in flu vaccinations,not a decrease.37.Which of the following statements is right about H3N2?

A.We have learned enough ofit.
B.lt's a kind of virus with the highest fatality rate.
C.It claimed more lives ofits victims for its severity.
D.The vaccine efficacy was not high enough to control it.

Text 4 As the nation experiences one of the worst flu seasons in years,thousands of Americans have already died from influenza,according to the U.S.Centers for Disease Control and Prevention.Though the season peaked in February,the CDC recently warned that we should prepare for a second wave of cases to hit before we emerge from the season entirely.Now,it appears more than 50,000 could die from the flu before the season ends.Perhaps most troubling is that this year marks a century since the deadliest viral outbreak in human history,which claimed the lives of 670,000 American men,women and children and as many as 50 to 100 million people worldwide.Among the lessons medical researchers gleaned from the catastrophic event is the critical importance of getting vaccinated.It's a lesson that much of the public continues to ignore,even as our scientific understanding of communicable diseases continues to grow.-The strain in tlus flu season,H3N2,is particularly nasty.It's similar to the HINl strain that set off the 1918 influenza pandemic,and it has resulted in high rates of death,particularly among the elderly.Researchers have struggled to create effective vaccines for the H3N2 strain;this year's flu vaccine is only about 36 percent effective at protecting against the virus,compared to an average of 45 percent over the past seven years.Nonetheless,it does provide some protection,and the unvaccinated are hit much harder without it.Earlier this year,a healthy young man from Pittsburgh did not get vaccinated and died soon afier getting the flu.While low vaccine efficacy means that those who get vaccinated can still contract the flu,it remains common sense and good civic behavior to get vaccinated.As a result of herd immunity,even low efficacy vaccines are enough to curb a pandemic from happening if vaccination rates are high.Flu vaccines did not exist during the pandemic of 1918,which is why it was so deadly.Yet year after year few Americans bother to get vaccinated.In economic terms,the herd immunity benefits of vaccination are a"public good."If I am vaccinated,I cannot exclude anyone from the herd immunity that I now offer.Similarly,someone enjoying my herd immunity does not diminish someone else's ability to enjoy my herd immunity.What typically happens when a public good like the flu vaccine is available is that many,perhaps most,people underinvest.They free ride off other people who get the vaccine.If too many people opt out of vaccination,communities become wlnerable to flu epidemics.According to the CDC,only 38 percent of the population chose to get vaccinated as ofNovember 2017.Low rates ofvaccination are particularly dangerous for children and the elderly,who are especially susceptible to influenza.As individuals,we have veU little control over the strain of the flu that emerges in a given year,or the efficacy of a vaccine,but we do have complete control over whether we get vaccinated.The public's response to a bad fiu outbreak or to low vaccine efficacy should be an increase in flu vaccinations,not a decrease.38.According to the text,there is no doubt about the infiuenza vaccines that

A.low efficacy vaccines can also help with vaccination accepted.
B.those who get vaccinated would not be infected.
C.the idea of herd immunity is a common sense.
D.many Americans are willing to get vaccinated.

Text 4 As the nation experiences one of the worst flu seasons in years,thousands of Americans have already died from influenza,according to the U.S.Centers for Disease Control and Prevention.Though the season peaked in February,the CDC recently warned that we should prepare for a second wave of cases to hit before we emerge from the season entirely.Now,it appears more than 50,000 could die from the flu before the season ends.Perhaps most troubling is that this year marks a century since the deadliest viral outbreak in human history,which claimed the lives of 670,000 American men,women and children and as many as 50 to 100 million people worldwide.Among the lessons medical researchers gleaned from the catastrophic event is the critical importance of getting vaccinated.It's a lesson that much of the public continues to ignore,even as our scientific understanding of communicable diseases continues to grow.-The strain in tlus flu season,H3N2,is particularly nasty.It's similar to the HINl strain that set off the 1918 influenza pandemic,and it has resulted in high rates of death,particularly among the elderly.Researchers have struggled to create effective vaccines for the H3N2 strain;this year's flu vaccine is only about 36 percent effective at protecting against the virus,compared to an average of 45 percent over the past seven years.Nonetheless,it does provide some protection,and the unvaccinated are hit much harder without it.Earlier this year,a healthy young man from Pittsburgh did not get vaccinated and died soon afier getting the flu.While low vaccine efficacy means that those who get vaccinated can still contract the flu,it remains common sense and good civic behavior to get vaccinated.As a result of herd immunity,even low efficacy vaccines are enough to curb a pandemic from happening if vaccination rates are high.Flu vaccines did not exist during the pandemic of 1918,which is why it was so deadly.Yet year after year few Americans bother to get vaccinated.In economic terms,the herd immunity benefits of vaccination are a"public good."If I am vaccinated,I cannot exclude anyone from the herd immunity that I now offer.Similarly,someone enjoying my herd immunity does not diminish someone else's ability to enjoy my herd immunity.What typically happens when a public good like the flu vaccine is available is that many,perhaps most,people underinvest.They free ride off other people who get the vaccine.If too many people opt out of vaccination,communities become wlnerable to flu epidemics.According to the CDC,only 38 percent of the population chose to get vaccinated as ofNovember 2017.Low rates ofvaccination are particularly dangerous for children and the elderly,who are especially susceptible to influenza.As individuals,we have veU little control over the strain of the flu that emerges in a given year,or the efficacy of a vaccine,but we do have complete control over whether we get vaccinated.The public's response to a bad fiu outbreak or to low vaccine efficacy should be an increase in flu vaccinations,not a decrease.40.Which ofthe following would be the best title for the text?

A.Take Flu Vaccination More Seriously
B.Develop Higher Efficacy Flu Vaccines
C.Receive More Vaccines
D.Tackle the Flu Outbreak

What happened in the 1970s?

A The US government recommended the amount of food a restaurant gave to a customer.
B Health experts persuaded restaurants to serve smaller portions.
C The United States produced more grain than needed.
D The American waistline started to expand.

Text 4 As the nation experiences one of the worst flu seasons in years,thousands of Americans have already died from influenza,according to the U.S.Centers for Disease Control and Prevention.Though the season peaked in February,the CDC recently warned that we should prepare for a second wave of cases to hit before we emerge from the season entirely.Now,it appears more than 50,000 could die from the flu before the season ends.Perhaps most troubling is that this year marks a century since the deadliest viral outbreak in human history,which claimed the lives of 670,000 American men,women and children and as many as 50 to 100 million people worldwide.Among the lessons medical researchers gleaned from the catastrophic event is the critical importance of getting vaccinated.It's a lesson that much of the public continues to ignore,even as our scientific understanding of communicable diseases continues to grow.-The strain in tlus flu season,H3N2,is particularly nasty.It's similar to the HINl strain that set off the 1918 influenza pandemic,and it has resulted in high rates of death,particularly among the elderly.Researchers have struggled to create effective vaccines for the H3N2 strain;this year's flu vaccine is only about 36 percent effective at protecting against the virus,compared to an average of 45 percent over the past seven years.Nonetheless,it does provide some protection,and the unvaccinated are hit much harder without it.Earlier this year,a healthy young man from Pittsburgh did not get vaccinated and died soon afier getting the flu.While low vaccine efficacy means that those who get vaccinated can still contract the flu,it remains common sense and good civic behavior to get vaccinated.As a result of herd immunity,even low efficacy vaccines are enough to curb a pandemic from happening if vaccination rates are high.Flu vaccines did not exist during the pandemic of 1918,which is why it was so deadly.Yet year after year few Americans bother to get vaccinated.In economic terms,the herd immunity benefits of vaccination are a"public good."If I am vaccinated,I cannot exclude anyone from the herd immunity that I now offer.Similarly,someone enjoying my herd immunity does not diminish someone else's ability to enjoy my herd immunity.What typically happens when a public good like the flu vaccine is available is that many,perhaps most,people underinvest.They free ride off other people who get the vaccine.If too many people opt out of vaccination,communities become wlnerable to flu epidemics.According to the CDC,only 38 percent of the population chose to get vaccinated as ofNovember 2017.Low rates ofvaccination are particularly dangerous for children and the elderly,who are especially susceptible to influenza.As individuals,we have veU little control over the strain of the flu that emerges in a given year,or the efficacy of a vaccine,but we do have complete control over whether we get vaccinated.The public's response to a bad fiu outbreak or to low vaccine efficacy should be an increase in flu vaccinations,not a decrease.39.The author implies in the last paragraph that faced with a bad flu outbreak,

A.the public should try to enhance the efficacy of a vaccine.
B.effective vaccines should be used to control over it.
C.the public should make a quicker response to it.
D.emphasis should be laid more on vaccination than a vaccine efficacy.

Text 1 The influenza season is just getting started in the United States,and it already promises to be more severe than usual.Hospital emergency rooms are filling up with flu sufferers,and pharmacies have reported medicine shortages.Twelve children had died as of last month.To make matters worse,in Australia,which experienced its flu season four to six months ago,the current vaccine appeared to be only about 10 percent effective against tlus year's dominant strain.Yet as bad as this winter's epidemic is,it won't compare with the flu pandemic that is almost certainly on the horizon if we don't dedicate energy and resources to a universal vaccine.The 1918 Spanish flu epidemic killed 50 million t0 100 million around the globe.Given the century of medical progress since then,one might conclude that we are far better prepared today to deal with such a worldwide catastrophe.Unfortunately,the opposite is true.The world has about four times the number of inhabitants it did in 1918,including hundreds of millions of people,poultry and pigs living close together.This provides a potent biologic mixing bowl and natural influenza virus mutation factory.When a pandemic does strike,we'll be in trouble in part because American hospitals and pharruacies keep in stock no more than a few days supply of most lifesaving drugs,almost all of which are made in Asia.Worldwide manufacturing and shipping are highly susceptible to disruption,which could mean shortages in many areas.A 1918-type influenza pandemic could cause ruin on the order of what the Black Death did t0 14th-century Europe,but on a global scale.Our current vaccines are based on 1940s research.Limited global manufacturing capacity combined with the five to six months it takes to make these vaccines mean many people would never even have a chance to be vaccinated.Little is being done to aggressively change this unacceptable situation.We will have worldwide flu pandemics.Only their severity is unknown.The only real solution is a universal vaccine that effectively attacks all influenza A strains,with reliable protection lasting for years,like other modem vaccines.Although the National Institutes of Health has publicly declared developing a vaccine a priority,it has only about$32 million this year specifically for such research.The Biomedical Advanced Research and Development Authority,the other federal agency responsible for developing and making available new vaccines for emergency response,has in fiscal year 2017 0nly a single project for$43 million supporting game-changing infiuenza vaccines.By contrast,the search for an H.I,V.vaccine-still a scientific long shot-receives Sl billion annually.We estimate that intemational govemments,vaccine manufacturers and the philanthropic community must make a similar commitment to influenza vaccine research if the kind of vaccine we need is to developed in the next 10 years.But there is no apparent effort to make these vaccines a priority in the current administration 21.The urgent task on hand is to

A.solve medicine shortage.
B.develop a new vaccine.
C.go into a universal vaccine.
D.control the spread ofinfiuenza.