单选题
What is the talk mainly about?
【正确答案】
B
【答案解析】[听力原文]
W1: Your liver helps your body to process nutrients and store food energy. It metabolizes the medicines you take and clears toxins from your body. You can see why your liver is one of the body"s vital organs, and why liver disease is such a serious threat to your well being. One of the most common disorders of the liver is hepatitis. The word hepatitis means inflammation, or swelling, of the liver. Inflammation of the liver causes the liver to stop working efficiently, which, over time, can have very serious consequences. Hepatitis can be acute or chronic. Acute hepatitis is a temporary episode of inflammation that may start and resolve itself quickly. Acute hepatitis is usually caused by infection with one of the five viruses known as hepatitis A, B, C, D, or E. Chronic hepatitis, on the other hand, is a long-term or recurring inflammation. Chronic hepatitis usually develops from acute hepatitis and can lead to progressive liver damage, liver cancer, or liver failure. The most common cause of hepatitis is one of the five hepatitis viruses. However, it can also be caused by certain bacteria, fungi, and parasites, or by an injury to the liver from a toxin or from alcohol or drug abuse. The severity of hepatitis depends on many factors, including the cause of the inflammation. Hepatitis A, for example, is generally short-lived and doesn"t lead to chronic liver damage. All types of hepatitis have similar symptoms, including jaundice—a yellowing of the skin and eyes—with abdominal pain and vomiting, diarrhea, weakness or fatigue, headache, and low-grade fever. Yes, Kyle?
M: Is it possible for someone to have hepatitis and have no symptoms at all? I mean, that"s what happened to my cousin. He never even knew he"d had hepatitis until he went to donate blood. They said he couldn"t give blood because the blood test showed that he"d had hepatitis.
W1: It is possible for some people with hepatitis to have no symptoms at all, or to have such moderate symptoms that it just seems like the flu. This is why some people don"t realize it when they have hepatitis. In fact, research shows that about 40 percent of urban Americans have had hepatitis A, but only about 5 percent can recall being sick. Now let"s look at the different strains of the virus and their different modes of transmission. Hepatitis A has been in the news lately, with the outbreak from contaminated shellfish. Let"s talk about hepatitis A, also called type A viral hepatitis. In addition to shellfish, contaminated water is a frequent source of hepatitis A. Other sources are cold cuts, fruits and fruit juices, milk and milk products, salads, vegetables, and iced drinks. Sometimes food is contaminated by infected workers in restaurants and food processing plants. And how does that happen?
W2: It happens when workers use the toilet and don"t wash their hands.
W1: That"s correct. Hepatitis A is spread by contact with fecal matter from an infected person. The virus is spread when people don"t wash their hands after using the toilet, or after changing a diaper, and then they touch their own mouths, or touch other people, or prepare food for others. It"s spread through the consumption of food or water containing fecal material.
M: Ugh! That"s disgusting.
W1: Yes, it does sound disgusting. But it"s what happens all too often where sanitation is poor and conditions are crowded. Outbreaks are likely to occur in institutions, housing projects—even in military camps when there isn"t enough clean water for washing. The idea of ingesting feces is disgusting, but hepatitis A is actually the least destructive of all the hepatitis viruses. Unlike hepatitis B and C, type A is a relatively mild illness that rarely has lasting effects. It hardly ever causes permanent liver damage. In contrast, hepatitis B and C are much more serious infections. Chronic infection with hepatitis B can lead to cirrhosis—permanent scarring of the liver—or to liver cancer, both of which can cause severe illness and even death. Oh! I see we"re out of time. Tomorrow we"ll pick up here, so make sure you"ve finished the section on the liver in Chapter 15.
What is the talk mainly about?
The class mainly discusses causes and effects of liver inflammation (hepatitis). The professor says The word hepatitis means inflammation, or swelling, of the liver; Acute hepatitis is usually caused by injection with one of the five viruses known as hepatitis A, B, C, D, or E; Chronic hepatitis usually develops from acute hepatitis and can lead to progressive liver damage, liver cancer, or liver failure. The most common cause of hepatitis is one of the five hepatitis viruses. However; it can also be caused by....
W1: Your liver helps your body to process nutrients and store food energy. It metabolizes the medicines you take and clears toxins from your body. You can see why your liver is one of the body"s vital organs, and why liver disease is such a serious threat to your well being. One of the most common disorders of the liver is hepatitis. The word hepatitis means inflammation, or swelling, of the liver. Inflammation of the liver causes the liver to stop working efficiently, which, over time, can have very serious consequences. Hepatitis can be acute or chronic. Acute hepatitis is a temporary episode of inflammation that may start and resolve itself quickly. Acute hepatitis is usually caused by infection with one of the five viruses known as hepatitis A, B, C, D, or E. Chronic hepatitis, on the other hand, is a long-term or recurring inflammation. Chronic hepatitis usually develops from acute hepatitis and can lead to progressive liver damage, liver cancer, or liver failure. The most common cause of hepatitis is one of the five hepatitis viruses. However, it can also be caused by certain bacteria, fungi, and parasites, or by an injury to the liver from a toxin or from alcohol or drug abuse. The severity of hepatitis depends on many factors, including the cause of the inflammation. Hepatitis A, for example, is generally short-lived and doesn"t lead to chronic liver damage. All types of hepatitis have similar symptoms, including jaundice—a yellowing of the skin and eyes—with abdominal pain and vomiting, diarrhea, weakness or fatigue, headache, and low-grade fever. Yes, Kyle?
M: Is it possible for someone to have hepatitis and have no symptoms at all? I mean, that"s what happened to my cousin. He never even knew he"d had hepatitis until he went to donate blood. They said he couldn"t give blood because the blood test showed that he"d had hepatitis.
W1: It is possible for some people with hepatitis to have no symptoms at all, or to have such moderate symptoms that it just seems like the flu. This is why some people don"t realize it when they have hepatitis. In fact, research shows that about 40 percent of urban Americans have had hepatitis A, but only about 5 percent can recall being sick. Now let"s look at the different strains of the virus and their different modes of transmission. Hepatitis A has been in the news lately, with the outbreak from contaminated shellfish. Let"s talk about hepatitis A, also called type A viral hepatitis. In addition to shellfish, contaminated water is a frequent source of hepatitis A. Other sources are cold cuts, fruits and fruit juices, milk and milk products, salads, vegetables, and iced drinks. Sometimes food is contaminated by infected workers in restaurants and food processing plants. And how does that happen?
W2: It happens when workers use the toilet and don"t wash their hands.
W1: That"s correct. Hepatitis A is spread by contact with fecal matter from an infected person. The virus is spread when people don"t wash their hands after using the toilet, or after changing a diaper, and then they touch their own mouths, or touch other people, or prepare food for others. It"s spread through the consumption of food or water containing fecal material.
M: Ugh! That"s disgusting.
W1: Yes, it does sound disgusting. But it"s what happens all too often where sanitation is poor and conditions are crowded. Outbreaks are likely to occur in institutions, housing projects—even in military camps when there isn"t enough clean water for washing. The idea of ingesting feces is disgusting, but hepatitis A is actually the least destructive of all the hepatitis viruses. Unlike hepatitis B and C, type A is a relatively mild illness that rarely has lasting effects. It hardly ever causes permanent liver damage. In contrast, hepatitis B and C are much more serious infections. Chronic infection with hepatitis B can lead to cirrhosis—permanent scarring of the liver—or to liver cancer, both of which can cause severe illness and even death. Oh! I see we"re out of time. Tomorrow we"ll pick up here, so make sure you"ve finished the section on the liver in Chapter 15.
What is the talk mainly about?
The class mainly discusses causes and effects of liver inflammation (hepatitis). The professor says The word hepatitis means inflammation, or swelling, of the liver; Acute hepatitis is usually caused by injection with one of the five viruses known as hepatitis A, B, C, D, or E; Chronic hepatitis usually develops from acute hepatitis and can lead to progressive liver damage, liver cancer, or liver failure. The most common cause of hepatitis is one of the five hepatitis viruses. However; it can also be caused by....
多选题
According to the talk, which of the following may cause hepatitis?
Click on 2 answers.
Click on 2 answers.
【正确答案】
A、C
【答案解析】[听力原文]
According to the talk, which of the following may cause hepatitis?
Alcohol or drug abuse may cause hepatitis: ...it can also be caused by...an injury to the liver from a toxin or from alcohol or drug abuse. Drinking contaminated water may cause hepatitis: ...contaminated water is a frequent source of hepatitis A; It"s spread through the consumption of food or water containing fecal material.
According to the talk, which of the following may cause hepatitis?
Alcohol or drug abuse may cause hepatitis: ...it can also be caused by...an injury to the liver from a toxin or from alcohol or drug abuse. Drinking contaminated water may cause hepatitis: ...contaminated water is a frequent source of hepatitis A; It"s spread through the consumption of food or water containing fecal material.
单选题
Listen again to part of the discussion. Then answer the question.
What does the professor imply about the student"s cousin?
What does the professor imply about the student"s cousin?
【正确答案】
A
【答案解析】[听力原文]
Listen again to part of the discussion. Then answer the question.
"Is it possible for someone to have hepatitis and have no symptoms at all? I mean, that"s what happened to my cousin. He never even knew he"d had hepatitis until he went to donate blood. They said he couldn"t give blood because the blood test showed that he"d had hepatitis."
"It is possible for some people with hepatitis to have no symptoms at all, or to have such moderate symptoms that it just seems like the flu. This is why some people don"t realize it when they have hepatitis."
What does the professor imply about the student"s cousin?
The professor implies that the student"s cousin probably had very mild symptoms of hepatitis. The cousin did not know that he had had hepatitis. The professor says that some people do not realize they have hepatitis because they have no symptoms or only moderate symptoms similar to those of the flu (influenza).
Listen again to part of the discussion. Then answer the question.
"Is it possible for someone to have hepatitis and have no symptoms at all? I mean, that"s what happened to my cousin. He never even knew he"d had hepatitis until he went to donate blood. They said he couldn"t give blood because the blood test showed that he"d had hepatitis."
"It is possible for some people with hepatitis to have no symptoms at all, or to have such moderate symptoms that it just seems like the flu. This is why some people don"t realize it when they have hepatitis."
What does the professor imply about the student"s cousin?
The professor implies that the student"s cousin probably had very mild symptoms of hepatitis. The cousin did not know that he had had hepatitis. The professor says that some people do not realize they have hepatitis because they have no symptoms or only moderate symptoms similar to those of the flu (influenza).
单选题
Why does the professor say this:
【正确答案】
C
【答案解析】[听力原文]
Why does the professor say this:
"Hepatitis A has been in the news lately, with the outbreak from contaminated shellfish."
The professor"s purpose is to focus the discussion on a specific strain of hepatitis: the hepatitis A virus, which can be present in shellfish.
Why does the professor say this:
"Hepatitis A has been in the news lately, with the outbreak from contaminated shellfish."
The professor"s purpose is to focus the discussion on a specific strain of hepatitis: the hepatitis A virus, which can be present in shellfish.
单选题
According to the talk, in which situation is an outbreak of hepatitis A likely to occur?
【正确答案】
A
【答案解析】[听力原文]
According to the talk, in which situation is an outbreak of hepatitis A likely to occur?
The professor says The virus is spread when people don"t wash their hands after using the toilet...; ...it"s what happens all too often where sanitation is poor.... Outbreaks are likely to occur...when there isn"t enough clean water for washing.
According to the talk, in which situation is an outbreak of hepatitis A likely to occur?
The professor says The virus is spread when people don"t wash their hands after using the toilet...; ...it"s what happens all too often where sanitation is poor.... Outbreaks are likely to occur...when there isn"t enough clean water for washing.
单选题
Listen again to part of the talk. Then answer the question.
What can be inferred from the professor"s statements?
What can be inferred from the professor"s statements?
【正确答案】
D
【答案解析】[听力原文]
Listen again to part of the talk. Then answer the question.
"In contrast, hepatitis B and C are much more serious infections. Chronic infection with hepatitis B can lead to cirrhosis—permanent scarring of the liver—or to liver cancer, both of which can cause severe illness and even death. Oh! I see we"re out of time. Tomorrow we"ll pick up here, so make sure you"ve finished the section on the liver in Chapter 15."
What can be inferred from the professor"s statements?
The professor starts talking about hepatitis B and C, but then realizes that the class is out of time. She says that tomorrow they will pick up here, meaning they will continue discussing hepatitis on the following day.
Listen again to part of the talk. Then answer the question.
"In contrast, hepatitis B and C are much more serious infections. Chronic infection with hepatitis B can lead to cirrhosis—permanent scarring of the liver—or to liver cancer, both of which can cause severe illness and even death. Oh! I see we"re out of time. Tomorrow we"ll pick up here, so make sure you"ve finished the section on the liver in Chapter 15."
What can be inferred from the professor"s statements?
The professor starts talking about hepatitis B and C, but then realizes that the class is out of time. She says that tomorrow they will pick up here, meaning they will continue discussing hepatitis on the following day.