Summer is a busy time for travel. For years, people have wondered whether they are safe from viruses when they travel in small, enclosed areas. They worry about close contact with others who may be sick.

The current spread of a swine flu(猪流感) virus has added to these concerns. Recently, the World Health Organization raised its warning about the new H1N1 virus to its highest level. W.H.O. Director-General Margaret Chan declared the sickness a pandemic–a disease that has spread to many nations. Given this information, many people want to know how safe it is to travel?

The answers people are getting may seem conflicting. For example, a W.H.O. statement urged nations not to close their borders or limit trade and travel. Director-General Chan said cases are generally not that serious for most people. Still, W.H.O. officials continue to report new cases across the world.

In the past, the W.H.O. and experts noted guidance for disease spread on airplanes. The experts said you could get infected only if you sit within two rows of someone who is sick. That would be a distance of up to three meters from the sick person. And this was true only if you sat there for more than eight hours.

But a travel-health expert says this guidance may not be helpful for swine flu. He suggests steps that could help prevent getting swine flu on an airplane. His advice includes keeping the airflow over your seat on the “low” position. The doctor says you should point the equipment so the flow of air is just in front of your face.

Doctors say anyone with pain, swelling(肿胀) or red skin on a leg during or after a long trip may have a blood clot(凝块). Anyone with such signs should see a doctor as soon as possible. The condition many times can be treated with drugs that thin the blood and stop the clot from moving through the body.

68．The underlined word “conflicting” is closest in meaning to ________.

A. in disagreement        B. not true                           C. the same                          D. unbelievable

69．According to Director-General Chan, the swine flu is ________.

A. a disease spread on airplanes                                B. a very dangerous disease

C. a disease requiring limit travel                              D. a widely spread disease

70．Which of the following is the travel-health expert’s opinion on traveling in an airplane?

A. It’s safe to sit within two rows of a sick person.

B. It’s helpful to keep air flowing right before your face.

C. It’s important for a passenger to stay in a plane within 8 hours.

D. It’s certain that a passenger will have a blood clot after a long flight.

71．What would be the best title for the text?

A. Stop Traveling in Case of Swine Flu                  B. Experts’ Arguments Over Swine Flu

C. Prevention of Swine Flu on the Trip                   D. No News Is the Best News

Summer is a busy time for travel. For years, people have wondered whether they are safe from viruses when they travel in small, enclosed areas. They worry about close contact with others who may be sick.

The current spread of a swine flu(猪流感) virus has added to these concerns. Recently, the World Health Organization raised its warning about the new H1N1 virus to its highest level. W.H.O. Director-General Margaret Chan declared the sickness a pandemic–a disease that has spread to many nations. Given this information, many people want to know how safe it is to travel?

The answers people are getting may seem conflicting. For example, a W.H.O. statement urged nations not to close their borders or limit trade and travel. Director-General Chan said cases are generally not that serious for most people. Still, W.H.O. officials continue to report new cases across the world.

In the past, the W.H.O. and experts noted guidance for disease spread on airplanes. The experts said you could get infected only if you sit within two rows of someone who is sick. That would be a distance of up to three meters from the sick person. And this was true only if you sat there for more than eight hours.

But a travel-health expert says this guidance may not be helpful for swine flu. He suggests steps that could help prevent getting swine flu on an airplane. His advice includes keeping the airflow over your seat on the “low” position. The doctor says you should point the equipment so the flow of air is just in front of your face.

Doctors say anyone with pain, swelling(肿胀) or red skin on a leg during or after a long trip may have a blood clot(凝块). Anyone with such signs should see a doctor as soon as possible. The condition many times can be treated with drugs that thin the blood and stop the clot from moving through the body.

1.The underlined word “conflicting” is closest in meaning to ________.

    A. in disagreement      B. not true             C. the same             D. unbelievable

2.According to Director-General Chan, the swine flu is ________.

    A. a disease spread on airplanes                    B. a very dangerous disease

    C. a disease requiring limit travel                 D. a widely spread disease

3.Which of the following is the travel-health expert’s opinion on traveling in an airplane?

    A. It’s safe to sit within two rows of a sick person.

    B. It’s helpful to keep air flowing right before your face.

    C. It’s important for a passenger to stay in a plane within 8 hours.

    D. It’s certain that a passenger will have a blood clot after a long flight.

4.What would be the best title for the text?

    A. Stop Traveling in Case of Swine Flu              B. Experts’ Arguments Over Swine Flu

    C. Prevention of Swine Flu on the Trip              D. No News Is the Best News

Summer is a busy time for travel. For years, people have wondered whether they are safe from viruses when they travel in small, enclosed areas. They worry about close contact with others who may be sick.

The current spread of a swine flu(猪流感) virus has added to these concerns. Recently, the World Health Organization raised its warning about the new H1N1 virus to its highest level. W.H.O. Director-General Margaret Chan declared the sickness a pandemic–a disease that has spread to many nations. Given this information, many people want to know how safe it is to travel?

The answers people are getting may seem conflicting. For example, a W.H.O. statement urged nations not to close their borders or limit trade and travel. Director-General Chan said cases are generally not that serious for most people. Still, W.H.O. officials continue to report new cases across the world.

In the past, the W.H.O. and experts noted guidance for disease spread on airplanes. The experts said you could get infected only if you sit within two rows of someone who is sick. That would be a distance of up to three meters from the sick person. And this was true only if you sat there for more than eight hours.

But a travel-health expert says this guidance may not be helpful for swine flu. He suggests steps that could help prevent getting swine flu on an airplane. His advice includes keeping the airflow over your seat on the “low” position. The doctor says you should point the equipment so the flow of air is just in front of your face.

Doctors say anyone with pain, swelling(肿胀) or red skin on a leg during or after a long trip may have a blood clot(凝块). Anyone with such signs should see a doctor as soon as possible. The condition many times can be treated with drugs that thin the blood and stop the clot from moving through the body.

68．The underlined word “conflicting” is closest in meaning to ________.

    A. in disagreement        B. not true                           C. the same                          D. unbelievable

69．According to Director-General Chan, the swine flu is ________.

    A. a disease spread on airplanes                                B. a very dangerous disease

    C. a disease requiring limit travel                              D. a widely spread disease

70．Which of the following is the travel-health expert’s opinion on traveling in an airplane?

    A. It’s safe to sit within two rows of a sick person.

    B. It’s helpful to keep air flowing right before your face.

    C. It’s important for a passenger to stay in a plane within 8 hours.

    D. It’s certain that a passenger will have a blood clot after a long flight.

71．What would be the best title for the text?

    A. Stop Traveling in Case of Swine Flu                   B. Experts’ Arguments Over Swine Flu

    C. Prevention of Swine Flu on the Trip                    D. No News Is the Best News

There are some serious threats to the children’s health. The largest killer of children under age five is pneumonia(肺炎). This lung infection kills about two million children each year, mostly in developing countries.

In developed countries, most pneumonia cases are caused by viruses. But in the developing world, about sixty percent are caused by bacteria. These cases can be treated with antibiotic drugs(抗生素).

The World Health Organization currently says children with severe pneumonia should be admitted to a hospital and given injectable antibiotics. But many poor families do not have the money for a hospital or live too far away.

Now, new research could lead to a change in that advice. A study in Pakistan found that children with severe pneumonia can recover fully at home taking antibiotics by mouth. The study is in the Lancet medical journal.

The research involved two thousand children between three and five years old. Half received intravenous(静脉) antibiotics during a forty-eight-hour hospital stay. The others were sent home to take antibiotics for five days.

The treatment failed in eighty-seven children in the hospitalized group and seventy-seven in the home group. These children were then given another therapy.

During the study, five children died, four of them in the hospital group.

W.H.O. medical officer Shamim Qazi says the new findings will help children, families and hospitals. Children may get other infections in a hospital. Many hospitals are already overcrowded. And treatment at home would be less costly.

The study confirmed the findings of three other studies in Africa, Asia, Europe and Latin America. These showed that in hospitals, oral antibiotics were just as effective as injectable antibiotics in treating severe pneumonia in children.

A few cases are so severe they will still need hospital care. But Doctor Qazi says the W.H.O will be updating its guidelines this year with the new evidence. The W.H.O, of course, will be devoted to studying other killers to children all the time as well.

1．Why do some children cannot be sent to hospital and given inject able antibiotics?

  A．Because parents don’t want to spend much money on them.

  B．Because their disease is not serious enough.

  C．Because they live far away from hospitals.

  D．Because they don’t want to receive intravenous antibiotics.

2．Of all the children who received intravenous antibiotics in the research,         children died.

      A．0.4%            B．0.2%             C．0.25%           D．0.5%

3．The writer mainly wants to tell us        .

       A．home treatments work well on children with severs pneumonia

  B．the largest killer of children under age five is pneumonia

  C．what the advantage of treating pneumonia staying at home is

  D．how the research about pneumonia was carried out

4．Suppose the passage hasn’t ended, what might be most possibly talked about in the following part?

       A．The detailed information about the W.H.O’s updating its guidelines.

       B．The way to solve the problem that some hospitals are overcrowded.

  C．Another threat to children’s health, which W.H.O will deal with.

       D．The findings of three other studies in Africa, Asia, Europe and Latin America

When you think about math, you probably don’t think about breaking the law, solving mysteries or finding criminals. But a mathematician in Maryland does, and he has come up with mathematical tools to help police find criminals.

People who solve crimes look for patterns that might reveal(揭示) the identity of the criminal. It’s long been believed, for example, that criminals will break the law closer to where they live, simply because it’s easier to get around in their own neighborhood. If police see a pattern of robberies in a certain area, they may look for a suspect(嫌疑犯) who lives near the crime scenes. So, the farther away from the area a crime takes place, the less likely it is that the same criminal did it.

But Mike O’Leary, a mathematician at Towson University in Maryland, says that this kind of approach may be too simple. He says that police may get better clues to the location of a criminal’s home base by combining these patterns with a city’s layout(布局) and historical crime records.

The records of past crimes contain geographical information and can reveal easy targets — that is, the kind of stores that might be less difficult to rob. Because these stores are along roads, the locations of past crimes contain information about where major streets and intersections are. O’Leary is writing a new computer program that will quickly provide this kind of information for a given city. His program also includes information about the people who live in the city, and information about how a criminal’s patterns change with age. It’s been shown, for example, that the younger the criminal, the closer to home the crime.

Other computer programmers have worked on similar software, but O’Leary’s uses more math. The mathematician plans to make his computer program available, free of charge, to police departments around the country.

The program is just one way to use math to fight crime. O’Leary says that criminology — the study of crime and criminals — contains a lot of good math problems. “I feel like I’m in a gold mine and I’m the only one who knows what gold looks like,” he says. “It’s a lot of fun.”

1.

 To find criminals, police usually ______.

A. focus on where crimes take place      B. seek help from local people

C. depend on new mathematical tools      D. check who are on the crime scene

2.

O’Leary is writing a computer program that ______.

A. uses math to increase the speed of calculation

B. tells the identity of a criminal in a certain area

C. shows changes in criminals’ patterns

D. provides the crime records of a given city

3.

 By “I’m the only one who knows what gold looks like”, O’Leary means that he ______.

A. is better at finding gold than others

B. is the only one who uses math to make money

C. knows more criminals than other mathematicians

D. knows best how to use math to help solve crimes

4.

What is the main idea of the text?

A. Criminals live near where crimes occur.

B. Math could help police find criminals.

C. Crime records could be used to fight crime.

D. Computer software works in preventing crimes.