It’s official, not making your bed keeps you healthy. Dust mites (尘螨) present in everyone’s home can cause asthma, but they can not live in the dry conditions of an unmade bed.
The average bed is home to one and a half million mites, and they cause a number of common allergies (过敏症), as they chomp away on human skin in the night; and then produce the allergens which we inhale (吸入).
Dust mites grow in the warm humid conditions prevalent in the occupied bed, but they cannot multiply without moisture. So leaving the bed unmade during the day means that the water is not retained by the sheets, which means that the mites dehydrate (脱水) and die.
Researcher Dr. Stephen Pretlove who has developed a computer model to track how changes in the home can reduce a numbers of dust mites said, “We know that mites can only survive by taking in water from the atmosphere using small glands on the outside of their body.”
In the next stage of their research, the scientists are putting mite pockets into beds in 36 houses around the United Kingdom. This will test the validity of the computer model and will investigate how people’s daily routines affect mite populations.
Building features such as heating ventilation (空气流通) and insulation (隔热) will also be adjustable to monitor how the mites cope and react to different atmospheres.
Dr. Pretlove said the research had potential to reduce the ￡700 million spent treating mite-induced illnesses each year in the UK.
“Our findings could help building designers create healthy homes and health care workers point out environments most at risk from mites.”
Dr. Matt Hallsworth, of the charity Asthma UK, said, “House-dust mite allergen can be an important trigger for many people with asthma, but at present many people find they are inevitable.”What is the best title of the passage？
| A．The Causes of Asthma |
| B．Research on Allergies |
| C．Don’t make your bed and stay healthy |
| D．The Bad Effects of Mites |
The underlined word “validity” means ______.
| A．confirmation | B．imagination | C．supposition | D．criticism |
Which statement is not true according to the passage?
| A．Building features can affect the growth of mites. |
| B．The research carried out will save a lot of money spent on treating mite-related illnesses. |
| C．At present it is impossible for people to get rid of house-dust mites related asthma. |
| D．Dust mites can survive in all kinds of conditions. |
What can not be inferred from the passage?
| A．Traditionally, people think that making bed can make one healthy. |
| B．Mites can not survive in humid atmosphere. |
| C．people in many fields will benefit from the research. |
| D．The research will change much in people’s concept on mites. |
Which one will not benefit from the research according to the passage?
| A．The patient with asthma. | B．The health-care worker. |
| C．The income of the hospital. | D．The building designer. |
Governments and health officials around the world continued to take steps Tuesday against the outbreak of swine flu that has killed scores of people in Mexico and spread to the U.S., Europe and possibly Asia.
By early Tuesday, the swine flu outbreak in Mexico had caused in 152 deaths and more than 1,600 illnesses. So far, at least 113 cases have been proved worldwide, including 64 in the United States; six in Canada; 11 in New Zealand and two each in Spain the United Kingdom and Israel. None has yet resulted in death.
The World Health Organization on Monday raised its alert level from three to four on its six-level scale. The move means the U.N. agency has determined that the virus can transmit
from human to human.
"In this age of global travel, where people move around in airplanes so quickly, there is no region to which this virus could not spread," said Fukuda, assistant director-general of the WHO.
Governments around the world struggled to prevent further outbreak. Some, like China and Russia, banned pork imports from the United States and Mexico. U.S. President Barack Obama said the outbreak was a cause for concern, not for alarm. The government urged travelers to avoid non-essential travel to Mexico.
The latest WHO report listed only seven proved swine flu deaths in Mexico but it was not clear why there was the discrepency.
Mexico City has closed all schools until at least May 6 to help curb(control) the spread of swine flu and ordered 35,00 public venues to close or serve only takeaway meals. In addition, bars, clubs, movie theaters, pool halls, gyms, sport centers and convention halls have been told to close until May 5. Armed police officers are also guarding hospitals in Mexico City while roads and schools in the city of 20 million people are deserted. Officials also have talked about shutting down the bus and subway systems.How many people were found catching swine flu in Spain?
| A．2. | B．11. | C．6. | D．64. |
When learning the outbreak of swine flu, the WHO was ____.
| A．calm | B．nervous | C．shocked | D．careful |
Fukuda’s words suggest that _____.
| A．he likes travel by air |
| B．global travel hasn’t been affected |
| C．this virus can spread quickly because of global travel |
| D．planes must be forbidden to take to prevent swine flu |
The last paragraph mainly tells us _____.
| A．Mexico has taken measures to control swine flu |
| B．Mexico City is too dangerous to live in |
| C．the normal life in Mexico has been changed |
| D．people in Mexico are badly in need of help |
The Danish capital is a year-round destination. Here are some of the city's best annual events.
Roskilde Festival (July)
The Danes love the outdoors and they love rock music; the Roskilde Festival is where they combine these passions for a weekend of drunken celebration. The four-day event is held about 30 minutes from the city completely, which means you can either go in for the full festival experience, or you can travel from the city to the festival each day.
There are also day tickets if you don't have the power for the whole collection of facts.
Kulturnatten (October)
For something a little more high brow there's the Night of Culture. For one night only some 300 venues in the city stage theater performances, art exhibitions, concerts and poetry readings.
Father Christmas Congress (July)
One of the more bizarre fixtures in Copenhagen's calendar, the event is held in July—the slow season for Santas—at the Bakken amusement park, some 20 minutes north of the city. The most interesting of the event is a procession of Santas from all over the world along Strøget. Parents should be prepared for some embarrassed questions from the kids.
Tivoli Gardens (November/December)
These pleasure gardens make for a great day out any time of the year but to see them at their most attractive, visit from mid-November through December, when they are transformed into a fairy tale of lanterns and Christmas markets. There's also outdoor skating, a Christmas entertainment and the very Danish 'Nissekøbing' village, home to more than 100 mechanical fairies.
If you are free in October, you can go to _____.
| A．Roskilde Festival | B．Kulturnatten |
| C．Father Christmas Congress | D．Tivoli Gardens |
Roskilde Festival is a festival _____.
| A．where many famous singers in Denmark gather |
| B．which is only held in the center of a city |
| C．that lasts about half an hour per day |
| D．that the Danas can enjoy |
How does the author think of the procession of Santas?
| A．Astonishing. | B．Funny. | C．Worth seeing. | D．Full of encouragement. |
The passage is probably written for _____.
| A．guides | B．tourists | C．businessmen | D．writers |
Planting trees around poultry farms can improve air and water quality -- and relations with neighbors. Research has shown that just three rows of trees near poultry houses can reduce the release of dust and ammonia(氨). They can also reduce the strong smell of ammonia gas.
The trees take dust, ammonia and odors in their leaves. They also provide shade from the sun, so they reduce cooling costs in summer. And they act as a windbreak, so they reduce heating costs in winter. Trees can also improve water quality around farms by removing pollutions from soil and groundwater.
Several years ago, people were objecting to the odor of poultry farms on the Delmarva Peninsula in the eastern United State s. Delmarva is where the states of Delaware, Maryland and Virginia come together. Two thousand farms there can each house an average of seventy-five thousand chickens.
Traditionally the farms used windows to provide fresh air in the chicken houses. Farmers rarely planted trees or tall crops around the buildings, so there would be no barrier to the airflow. But then farms began to use new ventilation systems. Instead of windows, the new systems used tunnel fans to circulate air. The fans directed airflow from the poultry houses toward the homes of neighbors.
Researchers began dealing with the problem in two thousand. They found that over a period of six years, planting three rows of trees reduced total dust and ammonia by more than half. And they found that smells were reduced by eighteen percent.
Farmers may think trees will take too long to grow and be effective. But some trees can grow quickly. At least one-third of the Delmarva farms have planted trees, technically known as vegetative environmental buffers. The idea offers a way to cut pollution, save money and energy, and make the neighbors happy.The second paragraph mainly tells us ______.
| A．planting trees as much as possible |
| B．the advantages of trees |
| C．how to reduce heating costs |
| D．why trees are received |
The word “odor” in paragraph 3 means ______.
| A．plant | B．smell | C．height | D．water |
The farms on the Delmarva Peninsula used to use ______ in chicken houses to provide fresh air.
| A．trees | B．tunnel fans | C．windows | D．poles |
It can be learned from the last two paragraphs that ______.
| A．three rows of trees are really good to the environment |
| B．researches began to realize the problem in 2000 |
| C．most farmers show interest in planting trees |
| D．the trees growing quickly can be cut off in a few years |
Our listener question this week comes from Abdullahi Farah, who wants to know about the life and work of Doctor Benjamin Carson.
Doctor Carson is an internationally recognized doctor at Johns Hopkins Hospital in Baltimore, Maryland. He has been the director of Pediatric Neurosurgery at the hospital for twenty-five years. At the age of thirty-three, he became one of the youngest doctors in the United States to hold that position. And he was the first African-American to have that position at Johns Hopkins Hospital.
Ben Carson is known for his work as a brain surgeon for children. For example, in nineteen eighty-seven, he led a team of seventy doctors and nurses in an operation to separate two babies joined at the head. Earlier attempts by other surgeons on other babies had failed. Doctor Carson successfully performed the operation. Both babies were able to survive independently.
Doctor Carson has written four books. His first book, "Gifted Hands," tells the story of his life. Benjamin Carson was born in nineteen fifty-one in Detroit, Michigan.
As a boy, Ben was not a good student. In fact, he was the worst in his class. When his mother learned of his failing grades she asked her sons to read two library books every week. She limited the amount of time they watched television. And she told them to respect every person.
Ben Carson soon became the top student in his class. He went on to study at Yale University, one of the best universities in the country, and later to medical school at the University of Michigan.
Doctor Carson has received many awards and honors. Last year he received the nation's highest civilian honor. Former President George W. Bush presented Benjamin Carson with the Presidential Medal of Freedom at a ceremony at the White House.The passage is probably taken from _____.
| A．a radio | B．a magazine | C．TV | D．a paper |
What does the word “surgeons” in paragraph 3 mean?
| A．nurses | B．doctors | C．hospitals | D．points |
Benjamin Carson’s change in study was largely because of ______
| A．his hard work | B．his teacher |
| C．his mother | D．his father |
What’s the aim to write the passage?
| A．To call on us to learn from Benjamin Carson. |
| B．To praise Benjamin Carson for his achievements. |
| C．To show us how Benjamin Carson succeeded |
| D．To introduce Benjamin Carson’s life and work |
Diane Arbus is known for creating intense black and white photographs of very unusual people. She used a special camera that produced square shaped images. One art expert said Diane Arbus turned photography inside out. Instead of looking at her subjects, she made them look at her.
Diane Arbus was born in 1923 to a wealthy family in New York City. After finishing high school at the age of 18, Diane married Allan Arbus. Mr. Arbus worked in the advertising department of her father’s store.
It was Mr. Arbus who gave Diane her first camera. Diane soon decided to take a class with the famous photographer Berenice Abbott. The Arbuses eventually started taking photographs of clothing. These images were used as advertisements for Diane’s father’s store. After the birth of their daughter, Doon, the Arbuses started a business together. Their purpose was to photograph clothing fashions. Diane Arbus was the stylist. She would prepare the hair and faces of the fashion models who wore the clothing being photographed. Allan Arbus took the pictures.
The couple soon had jobs from important fashion magazines such as “Vogue” and “Harper’s Bazaar”. Their work was very successful during the 1950s. They became part of a group of artists that were helping to redefine visual culture. They were breaking with past traditions to create a new look for a new decade, the sixties.
But Diane was not satisfied with her secondary role. She wanted a more active part in making photographs. She wanted to explore her own artistic expression and freedom. To do this, she stopped working with her husband. Then she started taking photography classes at the New School in New York City.
Arbus’ teacher, Lisette Model, influenced her in many ways. She showed Diane how to use a camera like an expert. She also taught Diane to use her art to face her doubts and fears. Miss Model once said that Diane soon started “not listening to me but suddenly listening to herself.”Diane Arbus got her first camera ______.
| A．from her father | B．from her husband |
| C．in a shop | D．in the advertising department |
Why did the Arbuses start a business together?
| A．To film clothing fashions. | B．To make their daughter happy. |
| C．To prove themselves. | D．To make friends with more people. |
The Arbuses ______ in the 1950s according to the passage.
| A．were in charge of “Vogue” | B．earned more than other artists |
| C．were recognized as great artists | D．were proud of their achievements |
We can learn from the last two paragraphs that ______.
| A．Diane was hard to dealt with |
| B．Diane care more for freedom |
| C．Diane was tired of working with husband |
| D．Diane learned more from Lisette Model |
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