Polluted airborne particles(大气悬浮颗粒) kill 7 million people a year, reports the World Health Organization.
That news may not come as a surprise to anyone who has seen images of chimneys in Beijing, Delhi or Mexico. But those factories-or even the jammed roadways of modern cities-are not the biggest killer. Each year, some 4.3 million people die earlier than they should because of polluted air inside their homes, says the WHO.
What's causing the air inside people's homes to be so poisonous that it kills around 11,000 people a day? Stoves. “Having an open fire in your kitchen is like burning 400 cigarettes an hour.” says Kirk Smith, a professor at the University of California at Berkeley, whose research suggests that household air pollution from cooking killed between 3.5 million and 4 million people in 2013.
Not all stoves cause this kind of harm. The ones Smith's talking about are those that the 3 billion people in the developing world use for heat and cooking, which burn solid fuels such as wood, coal, or crop waste instead of gas. The smoke from those fires produces harmful fine particles and carbon monoxide into homes. Poor ventilation then prevents that smoke from escaping, raising fine particle levels 100 times higher than the limits that the WHO considers acceptable.
Breathing this air day in day out eventually causes a lot of diseases: more than a third of the 4.3 million die of a stroke, while a quarter die of heart disease. And around one-third of annual lung disease deaths worldwide are due to waste from coal stoves.
Exposure tends to be extremely harmful for the people who spend the most time around the fire-usually women and young children. In fact, the WHO reports that household air pollution almost doubles the risk for childhood lung disease.
1.According to Kirk Smith's research,________.
A. factories are the biggest killer worldwide nowadays
B. burning 400 cigarettes an hour is extremely dangerous
C. household air pollution from cooking is surprisingly harmful
D. some 4.3 million people die earlier each year than they should
2.What should be the deadly killer in a household kitchen?
A. Solid fuels. B. Coal stoves.
C. Poor gas. D. Cooking smoke.
3. The underlined word “ventilation” in Paragraph 4 probably means ________.
A. airing B. cooking C. burning D. cooling
4.The author intends to tell people ________.
A. how to avoid polluted air in their homes
B. to stop cooking in the household kitchen
C. to guard against household pollution from cooking
D. how to prevent childhood lung diseases in household
高三英语阅读理解中等难度题
Polluted airborne particles(大气悬浮颗粒) kill 7 million people a year, reports the World Health Organization.
That news may not come as a surprise to anyone who has seen images of chimneys in Beijing, Delhi or Mexico. But those factories-or even the jammed roadways of modern cities-are not the biggest killer. Each year, some 4.3 million people die earlier than they should because of polluted air inside their homes, says the WHO.
What's causing the air inside people's homes to be so poisonous that it kills around 11,000 people a day? Stoves. “Having an open fire in your kitchen is like burning 400 cigarettes an hour.” says Kirk Smith, a professor at the University of California at Berkeley, whose research suggests that household air pollution from cooking killed between 3.5 million and 4 million people in 2013.
Not all stoves cause this kind of harm. The ones Smith's talking about are those that the 3 billion people in the developing world use for heat and cooking, which burn solid fuels such as wood, coal, or crop waste instead of gas. The smoke from those fires produces harmful fine particles and carbon monoxide into homes. Poor ventilation then prevents that smoke from escaping, raising fine particle levels 100 times higher than the limits that the WHO considers acceptable.
Breathing this air day in day out eventually causes a lot of diseases: more than a third of the 4.3 million die of a stroke, while a quarter die of heart disease. And around one-third of annual lung disease deaths worldwide are due to waste from coal stoves.
Exposure tends to be extremely harmful for the people who spend the most time around the fire-usually women and young children. In fact, the WHO reports that household air pollution almost doubles the risk for childhood lung disease.
1.According to Kirk Smith's research,________.
A. factories are the biggest killer worldwide nowadays
B. burning 400 cigarettes an hour is extremely dangerous
C. household air pollution from cooking is surprisingly harmful
D. some 4.3 million people die earlier each year than they should
2.What should be the deadly killer in a household kitchen?
A. Solid fuels. B. Coal stoves.
C. Poor gas. D. Cooking smoke.
3. The underlined word “ventilation” in Paragraph 4 probably means ________.
A. airing B. cooking C. burning D. cooling
4.The author intends to tell people ________.
A. how to avoid polluted air in their homes
B. to stop cooking in the household kitchen
C. to guard against household pollution from cooking
D. how to prevent childhood lung diseases in household
高三英语阅读理解中等难度题查看答案及解析
Scientists said the smaller the airborne particles, the more ______ they are to cause illness.
A. possible B. likely
C. probable D. perhaps
高三英语单项填空中等难度题查看答案及解析
Malaria, the world's most widespread parasitic (寄生虫引起的)disease, kills as many as three million people every year ---- almost all of whom are under five, very poor, and African. In most years, more than five hundred million cases of illness result from the disease, although exact numbers are difficult to assess because many people don't (or can't) seek care. It is not unusual for a family earning less than two hundred dollars a year to spend a quarter of its income on malaria treatment, and what they often get no longer works. In countries like Tanzania, Mozambique, and the Gambia, no family, village, hospital, or workplace can remain unaffected for long.
Malaria starts suddenly, with violent chills, which are soon followed by an intense fever and, often, headaches. As the parasites multiply, they take over the entire body. Malaria parasites live by eating the red blood cells they infect (感染) .They can also attach themselves to blood vessels in the brain. If it doesn't kill you, malaria can happen again and again for years. The disease is passed on to humans by female mosquitoes infected with one of four species of a parasite. Together, the mosquito and the parasite are the most deadly couple in the history of the earth and one of the most successful. Malaria has five thousand genes, and its ability to change rapidly to defend itself and resist new drugs has made it nearly impossible to control. Studies show that mosquitoes are passing on the virus more frequently, and there are more outbreaks in cities with large populations. Some of the disease's spread is due to global warming.
For decades, the first-choice treatment for malaria parasites in Africa has been chloroquine, a chemical which is very cheap and easy to make. Unfortunately, in most parts of the world, malaria parasites have become resistant to it. Successful alternatives that help prevent resistance are already available, but they have been in short supply and are very expensive. If these drugs should fail, nobody knows what would come next.
1. According to paragraph 1, many people don't seek care because ___________.
A. they are too poor
B. it is unusual to seek care
C. they can remain unaffected for long
D. there are too many people suffering from the disease
2. People suffering from malaria _____________.
A. have to kill female mosquitoes B. have ability to defend parasites
C. have their red blood cells infected D. have sudden fever, followed by chills
3. Which of the following may be the reason for the wide spread of the disease?
A. Its resistance to global warming.
B. Its ability to pass on the virus frequently.
C. Its outbreaks in cities with large populations.
D. Its ability to defend itself and resist new drugs.
4. It can be inferred from the passage that _____________.
A. no drugs have been found to treat the disease
B. the alternative treatment is not easily available to most people
C. malaria has developed its ability to resist parasites
D. nobody knows what will be the drug to treat the disease
5. Which of the following questions has NOT been discussed in the passage?
A. How can we know one is suffering from malaria?
B. How many people are killed by malaria each year?
C. Why are there so many people suffering from malaria?
D. What has been done to keep people unaffected for long?
高三英语阅读理解中等难度题查看答案及解析
Malaria, the world's most widespread parasitic(寄生虫引起的) disease, kills as many as three million people every year—almost all of whom are under five, very poor, and African. In most years, more than five hundred million cases of illness result from the disease, although exact numbers are difficult to assess because many people don't (or can't) seek care. It is not unusual for a family earning less than two hundred dollars a year to spend a quarter of its income on malaria treatment, and what they often get no longer works. In countries like Tanzania, Mozambique, and the Gambia, no family, village, hospital, or workplace can remain unaffected for long.
Malaria starts suddenly, with violent chills, which are soon followed by an intense fever and, often, headaches. As the parasites multiply, they take over the entire body. Malaria parasites live by eating the red blood cells they infect (感染). They can also attach themselves to blood vessels in the brain. If it doesn't kill you, malaria can happen again and again for years. The disease passed on to humans by female mosquitoes infected with one of four species of parasite. Together, the mosquito and the parasite are the most deadly couple in the history of the earth—and one of the most successful. Malaria has five thousand genes, and its ability to change rapidly to defend itself and resist new drugs has made it nearly impossible to control. Studies show that mosquitoes are passing on the virus more frequently, and there are more outbreaks in cities with large populations. Some of the disease's spread is due to global warming.
For decades, the first-choice treatment for malaria parasites in Africa has been chloroquine, a chemical which is very cheap and easy to make. Unfortunately, in most parts of the world, malaria parasites have become resistant to it. Successful alternatives that help prevent resistance are already available, but they have been in short supply and are very expensive. If these drugs should fail, nobody knows what would come next.
1.According to paragraph 1, many people don't seek care because___.
A. they are too poor
B. it is unusual to seek care
C. they can remain unaffected for long
D. there are too many people suffering from the disease
2.People suffering from malaria___.
A. have to kill female mosquitoes
B. have ability to defend parasites
C. have their red blood cells infected
D. have sudden fever, followed by chills
3.Which of the following may be the reason for the wide spread of the disease?
A. Its resistance to global warming.
B. Its ability to pass on the virus frequently.
C. Its outbreaks in cities with large populations.
D. Its ability to defend itself and resist new drugs.
4.It can be inferred from the passage that___.
A. no drugs have been found to treat the disease
B. the alternative treatment is not easily available to most people
C. malaria has developed its ability to resist parasites
D. nobody knows what will be the drug to treat the disease
5.Which of the following questions has NOT been discussed in the passage?
A. How can we know one is suffering from malaria?
B. How many people are killed by malaria each year?
C. Why are there so many people suffering from malaria7
D. What has been done to keep people unaffected for long7
高三英语阅读理解中等难度题查看答案及解析
Malaria, the world's most widespread parasitic(寄生虫引起的) disease, kills as many as three million people every year—almost all of whom are under five, very poor, and African. In most years, more than five hundred million cases of illness result from the disease, although exact numbers are difficult to assess because many people don't (or can't) seek care. It is not unusual for a family earning less than two hundred dollars a year to spend a quarter of its income on malaria treatment, and what they often get no longer works. In countries like Tanzania, Mozambique, and the Gambia, no family, village, hospital, or workplace can remain unaffected for long.
Malaria starts suddenly, with violent chills, which are soon followed by an intense fever and, often, headaches. As the parasites multiply, they take over the entire body. Malaria parasites live by eating the red blood cells they infect (感染). They can also attach themselves to blood vessels in the brain. If it doesn't kill you, malaria can happen again and again for years. The disease passed on to humans by female mosquitoes infected with one of four species of parasite. Together, the mosquito and the parasite are the most deadly couple in the history of the earth—and one of the most successful. Malaria has five thousand genes, and its ability to change rapidly to defend itself and resist new drugs has made it nearly impossible to control. Studies show that mosquitoes are passing on the virus more frequently, and there are more outbreaks in cities with large populations. Some of the disease's spread is due to global warming.
For decades, the first-choice treatment for malaria parasites in Africa has been chloroquine, a chemical which is very cheap and easy to make. Unfortunately, in most parts of the world, malaria parasites have become resistant to it. Successful alternatives that help prevent resistance are already available, but they have been in short supply and are very expensive. If these drugs should fail, nobody knows what would come next.
1. According to paragraph 1, many people don't seek care because___.
A. they are too poor
B. it is unusual to seek care
C. they can remain unaffected for long
D. there are too many people suffering from the disease
2.People suffering from malaria___.
A. have to kill female mosquitoes
B. have ability to defend parasites
C. have their red blood cells infected
D. have sudden fever, followed by chills
3.Which of the following may be the reason for the wide spread of the disease?
A. Its resistance to global warming.
B. Its ability to pass on the virus frequently.
C. Its outbreaks in cities with large populations.
D. Its ability to defend itself and resist new drugs.
4.It can be inferred from the passage that___.
A. no drugs have been found to treat the disease
B. the alternative treatment is not easily available to most people
C. malaria has developed its ability to resist parasites
D. nobody knows what will be the drug to treat the disease
5.Which of the following questions has NOT been discussed in the passage?
A. How can we know one is suffering from malaria?
B. How many people are killed by malaria each year?
C. Why are there so many people suffering from malaria7
D. What has been done to keep people unaffected for long7
高三英语阅读理解简单题查看答案及解析
AIDS-related illnesses have killed more than 30 million people since 1981. That's half as many deaths as in World War II. And it's not over. An estimated 1.1 million Americans are among the 33 million people worldwide who are now living with HIV, the virus that causes AIDS.
Between 1884 and 1924, somewhere near modern-day Kinshasa in West Central Africa, a hunter kills a chimpanzee. Some of the animal's blood enters the hunter's body, possibly through an open wound. The blood carries a virus harmless to the chimp but deadly to humans: HIV.
In June, 1981, the CDC publishes a report from Los Angeles of five young homosexual men with fatal or life-threatening PCP pneumonia. First cases recognized. In 1985, Rock Hudson dies of AIDS. Larry Kramer's AIDS play, "The Normal Heart." shocks New York audiences.
In 1986, for the first time, President Reagan publicly utters the word "AIDS." In 1987, Princess Diana is photographed hugging people with AIDS. Reagan makes his first speech on AIDS. Liberace dies of AIDS. Three years later, Photographer Robert Mapplethorpe dies of AIDS.
In 1988, the first World AIDS DAY is held on Dec. 1. During 1991-1992, the red ribbon is introduced as a symbol of AIDS solidarity(团结一致). But AIDS becomes the leading cause of death in U.S. men aged 25-44 and ten years later, AIDS becomes the leading cause of death worldwide for people aged 15 to 59.
In 2008, for the first time, global AIDS deaths decline. UNAIDS calculates that the global spread of AIDS peaked in 1996 at 3.5 million new infections. Deaths peaked in 2004, at 2.2 million. Yet AIDS Day 2009 brings surprising figures: 2.7 million new HIV infections and 2 million AIDS deaths in the previous year.
Researchers have discovered more than a dozen antibodies that target the HIV virus. They hope that these discoveries will lead to a vaccine that offers long-term protection against AIDS. One antibody in particular, PGT 128, is considered among the most potent and promising—preventing about 70% of viruses from infecting cells in laboratory tests.
1.What is the second paragraph mainly about?
A. HIV: from monkeys to humans. B. A hunter's killing caused HIV.
C. HIV is harmless to the chimpanzee. D. HIV is deadly to humans.
2.How many famous people died of AIDS mentioned in the passage between 1985 and 1991?
A. 2. B. 3. C. 4. D. 5.
3.Which of the following statements is true according to the passage?
A. The red ribbon and the World AIDS Day are both the symbols of AIDS solidarity.
B. In 2008, AIDS caused most deaths since 1981 and the death began to go down.
C. In 1986, President Reagan used the word "AIDS" and made a speech on it.
D. During 2001-2002, AIDS is the leading cause of death in the world aged 15 to 59.
4.What attitude does the author have towards the treatment to AIDS in the future?
A. Pessimistic. B. Optimistic. C. Objective. D. Uncertain.
高三英语阅读理解中等难度题查看答案及解析
Scientists say they have found high levels of small plastic particles(颗粒) in Arctic snow. A German-Swiss research team collected snow samples(样本)from the Arctic and other areas. They included northern Germany, the Bavarian and Swiss Alps, and the North Sea island of Heligoland.When the researchers examined the samples in a laboratory, they were surprised to find very high levels of microplastics.
Microplastics are very small pieces of plastic. These plastic particles are generally smaller than 5 millimeters in length. They come from the breakdown of man-made plastic products and industrial waste.
The study found the highest levels of microplastics came from the Bavarian Alps. One snow sample from the area had 154,000 microplastic particles per liter. Samples collected from the Arctic had much lower levels. However, even samples from the Arctic contained up to 14,000 particles per liter.
The study also attempted to explore how some of the material could have been carried in the atmosphere. A limited number of earlier studies did find microplastics in the air of some cities, including Paris, Tehran and Dongguan, China.
Bergmann Melanie co-wrote the report on the new study. She believes the new study clearly shows that “the majority of the microplastic in the snow comes from the air.” The new study suggests that much of the microplastic found in Europe and the Arctic comes from the atmosphere and snow.
While there is growing concern about the effect of microplastics on the environment, scientists are still studying their possible harmful effects on humans and animals. “I hope the new study will lead to more research on this issue. I think microscopic plastic particles should be included in worldwide observations of air pollution levels.We really need to know what effects microplastics have on humans, especially if inhaled with the air that we breathe.” Bergmann said.
1.Why did scientists collect samples from so many places in paragragh 1?
A.To make the research convincing.
B.To attract people to explore there.
C.To measure the length of microplastics .
D.To examine the samples easily in the lab.
2.What is the second paragraph mainly about?
A.The risks of microplastics.
B.The transport of microplastics.
C.The breakdown of plastic products.
D.The description of microplastics.
3.What did the research team find about microplastics?
A.Many people threw them away at the Alps.
B.They were delivered to remote areas through air.
C.They could be caught sight of in the air.
D.They had no great effect on the environment.
4.What can be inferred from what Bergmann said in the last paragraph?
A.Scientists are worried about the the influence of microplastics.
B.We have found a practical solution to the environment problem.
C.The effect of microplastics on human must be urgently researched.
D.There is no need to change observations of air pollution levels.
高三英语阅读理解中等难度题查看答案及解析
At least 10 million hectares of cultivated(耕作)land in China are polluted, which makes a grave threat to the country’s food safety, the Xinhua News Agency reported on Friday.
The polluted land,which is mostly in economically developed areas,accounts for one-tenth of the country’s total arable(可耕种的)land,according to an incomplete survey by the State Environmental Protection Administration,China’s top environment watchdog.
Pollution on cultivated land threatens the environment,food safety and the sustainable development of agriculture,the administration said.
Because of continual,too much use of chemical fertilizer, pesticide and agricultural plastic sheeting, as well as irrigation using polluted water, a large amount of contaminants(污染物)remain in the cultivated land.
The contaminants affect the soil’s ecological structure and function,leading to decreased soil productivity, lower crop yield(产量),and lower quality of agricultural products-
It also leads to worse water quality in rural areas.
Less than 9 per cent of drinkable water passed checks for bacteria in243 rural water supply stations across the county.
Another survey, which took samples of drinking water and groundwater an 69 small towns。 in Beijing, Tianjin and Hebei Province of North,China, showed that more than half of the water contains too much nitrate(硝酸盐),which may cause diabetes(糖尿病)and damage the kidney.
The administration estimated at least 1 90 million farmers are drinking water that contains harmful substances.
Many villagers drink unfiltered water taken from shallow water wells or water cellars, which are reported to have poor sanitary conditions·
1.The author writes the passage to________.
A.1et the readers examine their mistakes
B.present the readers a new idea
C.come up with a solution to ending farmland pollution
D.inform the readers of the importance of fighting farmland pollution
2.The underlined word “grave” in Paragraph 1 probably means
A.serious B.certain C.big D.terrible
3.Pollution on cultivated land leads to the following outcomes EXCEPT________.
A.a threat to China’s food safety
B.worse water quality in rural areas
C.a variety of diseases
D.the sustainable development of agriculture
高三英语阅读理解中等难度题查看答案及解析
The disease malaria, which is spread by mosquitoes, kills over one million children yearly. ______, according to the United Nations, hunger and malnutrition claim ten million lives each year.
A. However B. On the contrary C. On top of this D. As a result
高三英语单项填空中等难度题查看答案及解析
After his company suffered from millions of dollars in losses, Joe and left the company.
A. killed the fatted calf B. saw the handwriting on the wall
C. was in the black D. was over cloud nine
高三英语单项填空困难题查看答案及解析