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Scientists say Sever Acute Respiratory Syndrome (SARS) is caused by a new virus from the family of corona viruses (冠状病毒), which also causes the common cold.
WHAT ARE THE SYMPTOMS?
The World Health Organization says the main symptoms of SARS are high fever (over 38℃), dry cough, shortness breath or breathing difficulties. Changes in chest X — rays, which are indicative of pneumonia (肺炎), also occur. SARS may be associated with other symptoms, including chills, headache, muscular stiffness, loss of appetite, malaise, confusion, rash and diarrhea.
Health experts say the disease has an incubation period (潜伏期) of between two-to-seven days, with three-to-five days being more common before victims start showing flu-like symptoms.
HOW DANGEROUS IS IT?
The mortality rate (死亡率) appears to be between 3 to 5 per cent. In Hong Kong, at least, those who infected invariably develop severe pneumonia, which can cause numerous complications. The victim's condition can deteriorate (恶化) very quickly in as little as five days.
WHAT IS THE TREATMENT?
There is currently no specific cure for the disease. But doctors worldwide have been treating it with ribavirin-an anti-viral drug-and steroids (类固醇). Doctors say if treated early most patients without other serious illnesses can recover.
HOW DOES IT SPREAD?
WHO (世界卫生组织) and Hong Kong experts say the virus spreads through droplets by sneezing or coughing and such direct infection (传染) can usually happen within a radius of around three feet.
The virus can also spread indirectly as it can survive outside of the human they for three to six hours. Contact with any object that is tainted by droplets containing the virus, for example, a contaminated phone, could lead to infection if a person then touches their eyes, nose or mouth.
Health experts have not ruled out that it could be airborne (空气传播的), which infinitely raises the contagious nature of the virus and would make it far harder to contain (控制).
1. Which of the following is NOT considered as one of the symptoms of SARS?
A. dry cough B. shortness of breath
C. bleeding D. loss of appetite
2. It is possible that a person will be infected with SARS if ________.
A. they touches their nose after contacting with a contaminated phone.
B. they don’t wash their hands twice a day.
C. they don’t know the contagious nature of the virus like health experts.
D. they don’t go to a doctor at once when they catch a cold.
3. Which of the following is NOT true according to the passage?
A. Even though there is currently no specific cure, the doctors can treat SAJS with an anti-viral drug.
B. Before victims show flu-like symptoms, SARS has an incubation period of between two-to-seven days.
C. That SARS could be airborne has not been ruled out by health experts from WHO.
D. Doctors believe that every victim without other serious illnesses can be cured.
4. From the information given in the passage we can deduce that ________.
A. SARS is a type of pneumonia which is caused by influenza.
B. When an infected person travels, he can not spread the virus to other passengers on his flight.
C. In order to control the spread of the disease, patients should be placed in an isolation unit.
D. Wearing a mask is not a good way of keeping off SARS.
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阅读理解
Scientists say Severe Acute Respiratory Syndrome (SARS) is caused by a new virus from the family of corona viruses (冠状病毒), which also causes the common cold.
WHAT ARE THE SYMPTOMS?
The World Health Organization says the main symptoms of SARS are high fever (over 38℃), dry cough, shortness breath or breathing difficulties. Changes in chest X-rays, which are indicative of pneumonia (肺炎), also occur. SARS may be associated with other symptoms, including chills, headache, muscular stiffness, loss of appetite, malaise, confusion, rash and diarrhea.
Health experts say the disease has an incubation period (潜伏期) of between two-to-seven days, with three-to-five days being more common, before victims start showing flu-like symptoms.
HOW DANGEROUS IS IT?
The mortality rate (死亡率) appears to be between 3 to 5 per cent. In Hong Kong, at least, those who infected invariably develop severe pneumonia, which can cause numerous complications. The victim's condition can deteriorate (恶化) very quickly in as little as five days.
WHAT IS THE TREATMENT?
There is currently no specific cure for the disease. But doctors worldwide have been treating it with ribavirin
an anti-viral drugand steroids (类固醇). Doctors say if treated early mast patients without other serious illnesses can recover.
HOW DOES IT SPREAD?
WHO (世界卫生组织) and Hong Kong experts say the virus spreads through droplets by sneezing or coughing and such direct infection (传染) can usually happen within a radius of around three feet.
The virus can also spread indirectly as it can survive outside of the human body for three to six hours. Contact with any object that is tainted by droplets containing the virus, for example, a contaminated phone, could lead to infection if a person then touches their eyes, nose or mouth.
Health experts have not ruled out that it could be airborne (空气传播的), which infinitely raises the contagious nature of the virus and would make it far harder to contain (控制).
1．Which of the following is NOT considered as one of the symptoms of SARS?
[ ]
2．It is possible that a person will be infected with SARS if ________.
[ ]
A．they touches their nose after contacting with a contaminated phone.
B．they don't wash their hands twice a day.
C．they don't know the contagious nature of the virus like health experts.
D．they don't go to a doctor at once when they catch a cold.
3．Which of the following is NOT true according to the passage?
[ ]
A．Even though there is currently no specific cure, the doctors can treat SARS with an anti-viral drug.
B．Before victims show flu-like symptoms, SARS has an incubation period of between two-to-seven days.
C．That SARS could be airborne has not been ruled out by health experts from WHO.
D．Doctors believe that every victim without other serious illnesses can be cured.
4．From the information given in the passage we can deduce that ________.
[ ]
A．SARS is a type of pneumonia which is caused by influenza.
B．When an infected person travels, he can not spread the virus to other passengers on his flight.
C．In order to control the spread of the disease, patients should be placed in an isolation unit.
D．Wearing a mask is not a good way of keeping off SARS.
查看习题详情和答案>>In history, the real cowboy was a simple farm worker on horseback. He spent twelve to fourteen hours a day outdoors working with cows. The work was dirty, tiresome and not very well paid. In the winter, most cowboys had to find other jobs. They were seldom alone. Most of them worked in teams of eight to ten.
People could raise beef cattle at low cost in the western states and send them by train to the eastern markets. But someone had to look after the cattle on the open land and get them to the nearest railroad. This was the job of a cowboy. Sometimes the railroad was more than a thousand kilometers away and it could take as long as six months to move the cattle. The cowboy moved the cattle slowly so that the cattle would not lose weight.
Most cowboys were young, unmarried men. A cowboy’s horse was his most important tool. A good horse made the job of moving cattle much easier. A good cowboy understood cows and knew how to control them. At night, he sang to the cows to keep them calm.
The cowboy quickly received popular praise. Historians say that was because the cowboy appeared during a time of change in American life. In the late 1800’s America was changing from a nation of farms to one of factories and cities. The cowboy seemed free and more independent than other Americans.
Today, the life of real cowboys has changed greatly. One change has been the use of trucks. There is no need for the modern cowboy to sleep on the ground. Modern cowboys are better paid. They are likely to be married. Today, cowboys are found in almost every state of the United States. Some of them are farmers or teachers or truck drivers. Some work for big companies. But at night and on weekends they become cowboys. Most have less than a thousand cows, and some have only two or three. Those part-time cowboys increase the total production of meat, keeping beef price low. Most modern cowboys do not make much money from raising cattle. Many do it because they love the cowboy life.
1. In the past, the cowboy’s work________________.
A. was covered with dirt
B. cost much labor
C. was less paid
D. All of the above
2. The cowboys quickly receive popular praise because they appeared________________.
A. in the western parts of the United States
B. in the eastern markets every year
C. in the time of great changes in America
D. in the early 1800’s
3. Which of the following statements is true?
A. The modern cowboys not only use their horses but also their trucks.
B. The modern cowboys still have to sleep on the ground outdoors.
C. The modern cowboys are badly paid.
D. Most modern cowboys don’t love their work.
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阅读理解
The American cowboy was a great national hero through facts and stories. In history, the real cowboy was a simple farm worker on the horseback. He spent twelve to fourteen hours a day outdoors working with cows. The work was dirty, tiresome and not very well paid. In winter, most cowboys had to find other jobs. They were seldom alone.
Most of them worked in teams of eight to ten. People could raise beef cattle at low cost in the western states and send them by train to the eastern markets. But someone had to look after the cattle on the open land and get them to the nearest railroad. This was the job of a cowboy. Sometimes the railroad was more than a thousand kilometers away and it could take as long as six months to move the cattle. The cowboy moved the cattle slowly so that the cattle would not lose weight.
Most cowboys were young, unmarried men. A cowboy's horse was his most important tool. A good horse made the job of moving cattle much easier. A good cowboy understood cows and knew how to control them. At night, he sang to the cows to keep them calm.
The cowboy quickly received popular praise. Historians say that was because the cowboy appeared during a time of change in American life. In the late 1800's, America was changing from a nation of farms to one of factories and cities. The cowboy seemed free and more independent than other Americans.
Today, the life of real cowboys has changed greatly. One change has been the use of trucks. There is no need for the modem cowboy to sleep on the ground. Modern cowboys are better paid. They are likely to be married. Today cowboys are found in almost every state of the United States. Some of them are farmers or teachers or truck drivers. Some work for big companies. But at night and on weekends they became cowboys. Most have less than a thousand cows, and some have only two or three, those part-rime cowboys increase the total production of meat, keeping beef price low. Most modem cowboys do not make much money from raising cattle. Many do it because they love the cowboy life.
1．In the past, the cowboy’s work ________ .
[ ]
A．was covered with dirt
B．cost much labor
C．was less paid
D．all of the above
2．Sometimes it took the cowboys ________ to move the beef cattle from the western states to the eastern markets.
[ ]
3．The cowboys quickly received popular praise because they appeared ________ .
[ ]
A．in the western parts of the United Slates
B．in the eastern markets every year
C．in the time of great changes in America
D．in the early 1800’s
4．Which of the following statements is true?
[ ]
A．The modem cowboys not only use their horse hut also their trucks.
B．The modem cowboys still have to sleep on the ground outdoors.
C．The modem cowboys are badly paid.
D．Most modem cowboys don't love their work.
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