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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 31 to 35.FOR A QUICK PICKUP It used to be that people would drink coffee or tea in the morning to pick them up and get them going for the day. Then cola drinks hit the market. With lots of caffeine and sugar, these beverages soon became the pick-me-up of choice for many adults and teenagers. Now drink companies are putting out so-called “energy drinks.” Thesebeverages have the specific aim of giving tired consumers more energy. One example of a popular energy drink is Red Bull. The company that puts out this beverage has stated in interviews that Red Bull is not a thirst quencher. Nor is it meant to be a fluid replacement drink for athletes. Instead, the beverage is meant to revitalize a tired consumer’s body and mind. In order to do this, the makers of Red Bull, and other energy drinks, typically add vitamins and certain chemicals to their beverages. The added chemicals are like chemicals that the body naturally produces for energy. The vitamins, chemicals, caffeine, and sugar found in these beverages all seem like a sure bet to give a person energy. Health professionals are not so sure, though. For one thing, there is not enough evidence to show that all of the vitamins added to energy drinks actually raise a person’s energy level. Another problem is that there are so many things in the beverages. Nobody knows for sure how all of the ingredients in energy drinks work together. Dr. Brent Bauer, one of the directors at the Mayo Clinic in the US, cautions people about believing all the claims energy drinks make. He says, “It is plausible if you put these twelve things together, you will get a good result.” However, Dr. Bauer adds the mix of ingredients could also have a negative impact on the body. “We just don’t know at thispoint,” he says.The word “it” in the second paragraph refers to________.
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 31 to 35.FOR A QUICK PICKUP It used to be that people would drink coffee or tea in the morning to pick them up and get them going for the day. Then cola drinks hit the market. With lots of caffeine and sugar, these beverages soon became the pick-me-up of choice for many adults and teenagers. Now drink companies are putting out so-called “energy drinks.” Thesebeverages have the specific aim of giving tired consumers more energy. One example of a popular energy drink is Red Bull. The company that puts out this beverage has stated in interviews that Red Bull is not a thirst quencher. Nor is it meant to be a fluid replacement drink for athletes. Instead, the beverage is meant to revitalize a tired consumer’s body and mind. In order to do this, the makers of Red Bull, and other energy drinks, typically add vitamins and certain chemicals to their beverages. The added chemicals are like chemicals that the body naturally produces for energy. The vitamins, chemicals, caffeine, and sugar found in these beverages all seem like a sure bet to give a person energy. Health professionals are not so sure, though. For one thing, there is not enough evidence to show that all of the vitamins added to energy drinks actually raise a person’s energy level. Another problem is that there are so many things in the beverages. Nobody knows for sure how all of the ingredients in energy drinks work together. Dr. Brent Bauer, one of the directors at the Mayo Clinic in the US, cautions people about believing all the claims energy drinks make. He says, “It is plausible if you put these twelve things together, you will get a good result.” However, Dr. Bauer adds the mix of ingredients could also have a negative impact on the body. “We just don’t know at thispoint,” he says.According to the reading, what makes it difficult for researchers to know if an energy drink gives people energy?
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 31 to 35.FOR A QUICK PICKUP It used to be that people would drink coffee or tea in the morning to pick them up and get them going for the day. Then cola drinks hit the market. With lots of caffeine and sugar, these beverages soon became the pick-me-up of choice for many adults and teenagers. Now drink companies are putting out so-called “energy drinks.” Thesebeverages have the specific aim of giving tired consumers more energy. One example of a popular energy drink is Red Bull. The company that puts out this beverage has stated in interviews that Red Bull is not a thirst quencher. Nor is it meant to be a fluid replacement drink for athletes. Instead, the beverage is meant to revitalize a tired consumer’s body and mind. In order to do this, the makers of Red Bull, and other energy drinks, typically add vitamins and certain chemicals to their beverages. The added chemicals are like chemicals that the body naturally produces for energy. The vitamins, chemicals, caffeine, and sugar found in these beverages all seem like a sure bet to give a person energy. Health professionals are not so sure, though. For one thing, there is not enough evidence to show that all of the vitamins added to energy drinks actually raise a person’s energy level. Another problem is that there are so many things in the beverages. Nobody knows for sure how all of the ingredients in energy drinks work together. Dr. Brent Bauer, one of the directors at the Mayo Clinic in the US, cautions people about believing all the claims energy drinks make. He says, “It is plausible if you put these twelve things together, you will get a good result.” However, Dr. Bauer adds the mix of ingredients could also have a negative impact on the body. “We just don’t know at thispoint,” he says.What is the main idea of the reading?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.While watching sports on TV, the chances are children will see professional players cheating, having tantrums, fighting, or abusing officials. In addition, it’s highly likely that children will be aware of well-known cases of sportspeople being caught using drugs to improve their performance. The danger of all this is that it could give children the idea that winning is all that counts and you should win at all costs. Good behavior and fair play aren’t the message that comes across. Instead, it looks as if cheating and bad behavior are reasonable ways of getting what you want. This message is further bolstered by the fact that some of these sportspeople acquire enormous fame and wealth, making it seem they are being handsomely rewarded either despite or because of their bad behavior.What can parents do about this? They can regard sport on television as an opportunity to discuss attitudes and behavior with their children. When watching sports together, if parents see a player swearing at the referee, they can get the child’s opinion on that behavior and discuss whether a player’s skill is more important than their behavior. Ask what the child thinks the player’s contribution to the team is. Point out that no player can win a team game on their own, so it’s important for members to work well together.Another thing to focus on is what the commentators say. Do they frown on bad behavior from players, think it’s amusing or even consider it’s a good thing? What about the officials? If they let players get away with a clear foul, parents can discuss with children whether this is right and what effect it has on the game. Look too at the reactions of coaches and managers. Do they accept losing with good grace or scowl and show a bad attitude? Parents can use this to talk about attitudes to winning and losing and to remind children that both are part of sport.However, what children learn from watching sports is by no means all negative and parents should make sure they accentuate the positives too. They should emphasise to children the high reputation that well-behaved players have, not just with their teammates but also with spectators and the media. They can focus on the contribution made by such players during a game, discussing how valuable they are in the team. In the interviews after a game, point out to a child that the well-behaved sportspeople don’t gloat when they win or sulk when they lose. And parents can stress how well these people conduct themselves in their personal lives and the good work they do for others when not playing. In other words, parents should get their children to focus on the positive role models, rather than the antics of the badly behaved but often more publicized players.Which of the following can be inferred from the passage?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.While watching sports on TV, the chances are children will see professional players cheating, having tantrums, fighting, or abusing officials. In addition, it’s highly likely that children will be aware of well-known cases of sportspeople being caught using drugs to improve their performance. The danger of all this is that it could give children the idea that winning is all that counts and you should win at all costs. Good behavior and fair play aren’t the message that comes across. Instead, it looks as if cheating and bad behavior are reasonable ways of getting what you want. This message is further bolstered by the fact that some of these sportspeople acquire enormous fame and wealth, making it seem they are being handsomely rewarded either despite or because of their bad behavior.What can parents do about this? They can regard sport on television as an opportunity to discuss attitudes and behavior with their children. When watching sports together, if parents see a player swearing at the referee, they can get the child’s opinion on that behavior and discuss whether a player’s skill is more important than their behavior. Ask what the child thinks the player’s contribution to the team is. Point out that no player can win a team game on their own, so it’s important for members to work well together.Another thing to focus on is what the commentators say. Do they frown on bad behavior from players, think it’s amusing or even consider it’s a good thing? What about the officials? If they let players get away with a clear foul, parents can discuss with children whether this is right and what effect it has on the game. Look too at the reactions of coaches and managers. Do they accept losing with good grace or scowl and show a bad attitude? Parents can use this to talk about attitudes to winning and losing and to remind children that both are part of sport.However, what children learn from watching sports is by no means all negative and parents should make sure they accentuate the positives too. They should emphasise to children the high reputation that well-behaved players have, not just with their teammates but also with spectators and the media. They can focus on the contribution made by such players during a game, discussing how valuable they are in the team. In the interviews after a game, point out to a child that the well-behaved sportspeople don’t gloat when they win or sulk when they lose. And parents can stress how well these people conduct themselves in their personal lives and the good work they do for others when not playing. In other words, parents should get their children to focus on the positive role models, rather than the antics of the badly behaved but often more publicized playersWhich of the following about sport is NOT mentioned in the passage?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.While watching sports on TV, the chances are children will see professional players cheating, having tantrums, fighting, or abusing officials. In addition, it’s highly likely that children will be aware of well-known cases of sportspeople being caught using drugs to improve their performance. The danger of all this is that it could give children the idea that winning is all that counts and you should win at all costs. Good behavior and fair play aren’t the message that comes across. Instead, it looks as if cheating and bad behavior are reasonable ways of getting what you want. This message is further bolstered by the fact that some of these sportspeople acquire enormous fame and wealth, making it seem they are being handsomely rewarded either despite or because of their bad behavior.What can parents do about this? They can regard sport on television as an opportunity to discuss attitudes and behavior with their children. When watching sports together, if parents see a player swearing at the referee, they can get the child’s opinion on that behavior and discuss whether a player’s skill is more important than their behavior. Ask what the child thinks the player’s contribution to the team is. Point out that no player can win a team game on their own, so it’s important for members to work well together.Another thing to focus on is what the commentators say. Do they frown on bad behavior from players, think it’s amusing or even consider it’s a good thing? What about the officials? If they let players get away with a clear foul, parents can discuss with children whether this is right and what effect it has on the game. Look too at the reactions of coaches and managers. Do they accept losing with good grace or scowl and show a bad attitude? Parents can use this to talk about attitudes to winning and losing and to remind children that both are part of sport.However, what children learn from watching sports is by no means all negative and parents should make sure they accentuate the positives too. They should emphasise to children the high reputation that well-behaved players have, not just with their teammates but also with spectators and the media. They can focus on the contribution made by such players during a game, discussing how valuable they are in the team. In the interviews after a game, point out to a child that the well-behaved sportspeople don’t gloat when they win or sulk when they lose. And parents can stress how well these people conduct themselves in their personal lives and the good work they do for others when not playing. In other words, parents should get their children to focus on the positive role models, rather than the antics of the badly behaved but often more publicized playersThe word “They” in paragraph 4 refers to _______.
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.While watching sports on TV, the chances are children will see professional players cheating, having tantrums, fighting, or abusing officials. In addition, it’s highly likely that children will be aware of well-known cases of sportspeople being caught using drugs to improve their performance. The danger of all this is that it could give children the idea that winning is all that counts and you should win at all costs. Good behavior and fair play aren’t the message that comes across. Instead, it looks as if cheating and bad behavior are reasonable ways of getting what you want. This message is further bolstered by the fact that some of these sportspeople acquire enormous fame and wealth, making it seem they are being handsomely rewarded either despite or because of their bad behavior.What can parents do about this? They can regard sport on television as an opportunity to discuss attitudes and behavior with their children. When watching sports together, if parents see a player swearing at the referee, they can get the child’s opinion on that behavior and discuss whether a player’s skill is more important than their behavior. Ask what the child thinks the player’s contribution to the team is. Point out that no player can win a team game on their own, so it’s important for members to work well together.Another thing to focus on is what the commentators say. Do they frown on bad behavior from players, think it’s amusing or even consider it’s a good thing? What about the officials? If they let players get away with a clear foul, parents can discuss with children whether this is right and what effect it has on the game. Look too at the reactions of coaches and managers. Do they accept losing with good grace or scowl and show a bad attitude? Parents can use this to talk about attitudes to winning and losing and to remind children that both are part of sport.However, what children learn from watching sports is by no means all negative and parents should make sure they accentuate the positives too. They should emphasise to children the high reputation that well-behaved players have, not just with their teammates but also with spectators and the media. They can focus on the contribution made by such players during a game, discussing how valuable they are in the team. In the interviews after a game, point out to a child that the well-behaved sportspeople don’t gloat when they win or sulk when they lose. And parents can stress how well these people conduct themselves in their personal lives and the good work they do for others when not playing. In other words, parents should get their children to focus on the positive role models, rather than the antics of the badly behaved but often more publicized playersThe word “accentuate” in paragraph 4 can be best replaced by _______.
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.While watching sports on TV, the chances are children will see professional players cheating, having tantrums, fighting, or abusing officials. In addition, it’s highly likely that children will be aware of well-known cases of sportspeople being caught using drugs to improve their performance. The danger of all this is that it could give children the idea that winning is all that counts and you should win at all costs. Good behavior and fair play aren’t the message that comes across. Instead, it looks as if cheating and bad behavior are reasonable ways of getting what you want. This message is further bolstered by the fact that some of these sportspeople acquire enormous fame and wealth, making it seem they are being handsomely rewarded either despite or because of their bad behavior.What can parents do about this? They can regard sport on television as an opportunity to discuss attitudes and behavior with their children. When watching sports together, if parents see a player swearing at the referee, they can get the child’s opinion on that behavior and discuss whether a player’s skill is more important than their behavior. Ask what the child thinks the player’s contribution to the team is. Point out that no player can win a team game on their own, so it’s important for members to work well together.Another thing to focus on is what the commentators say. Do they frown on bad behavior from players, think it’s amusing or even consider it’s a good thing? What about the officials? If they let players get away with a clear foul, parents can discuss with children whether this is right and what effect it has on the game. Look too at the reactions of coaches and managers. Do they accept losing with good grace or scowl and show a bad attitude? Parents can use this to talk about attitudes to winning and losing and to remind children that both are part of sport.However, what children learn from watching sports is by no means all negative and parents should make sure they accentuate the positives too. They should emphasise to children the high reputation that well-behaved players have, not just with their teammates but also with spectators and the media. They can focus on the contribution made by such players during a game, discussing how valuable they are in the team. In the interviews after a game, point out to a child that the well-behaved sportspeople don’t gloat when they win or sulk when they lose. And parents can stress how well these people conduct themselves in their personal lives and the good work they do for others when not playing. In other words, parents should get their children to focus on the positive role models, rather than the antics of the badly behaved but often more publicized playersAccording to paragraph 2, what should parents teach their children through watching sports?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.While watching sports on TV, the chances are children will see professional players cheating, having tantrums, fighting, or abusing officials. In addition, it’s highly likely that children will be aware of well-known cases of sportspeople being caught using drugs to improve their performance. The danger of all this is that it could give children the idea that winning is all that counts and you should win at all costs. Good behavior and fair play aren’t the message that comes across. Instead, it looks as if cheating and bad behavior are reasonable ways of getting what you want. This message is further bolstered by the fact that some of these sportspeople acquire enormous fame and wealth, making it seem they are being handsomely rewarded either despite or because of their bad behavior.What can parents do about this? They can regard sport on television as an opportunity to discuss attitudes and behavior with their children. When watching sports together, if parents see a player swearing at the referee, they can get the child’s opinion on that behavior and discuss whether a player’s skill is more important than their behavior. Ask what the child thinks the player’s contribution to the team is. Point out that no player can win a team game on their own, so it’s important for members to work well together.Another thing to focus on is what the commentators say. Do they frown on bad behavior from players, think it’s amusing or even consider it’s a good thing? What about the officials? If they let players get away with a clear foul, parents can discuss with children whether this is right and what effect it has on the game. Look too at the reactions of coaches and managers. Do they accept losing with good grace or scowl and show a bad attitude? Parents can use this to talk about attitudes to winning and losing and to remind children that both are part of sport.However, what children learn from watching sports is by no means all negative and parents should make sure they accentuate the positives too. They should emphasise to children the high reputation that well-behaved players have, not just with their teammates but also with spectators and the media. They can focus on the contribution made by such players during a game, discussing how valuable they are in the team. In the interviews after a game, point out to a child that the well-behaved sportspeople don’t gloat when they win or sulk when they lose. And parents can stress how well these people conduct themselves in their personal lives and the good work they do for others when not playing. In other words, parents should get their children to focus on the positive role models, rather than the antics of the badly behaved but often more publicized playersThe word “bolstered” in paragraph 1 is closest in meaning to _______.
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.While watching sports on TV, the chances are children will see professional players cheating, having tantrums, fighting, or abusing officials. In addition, it’s highly likely that children will be aware of well-known cases of sportspeople being caught using drugs to improve their performance. The danger of all this is that it could give children the idea that winning is all that counts and you should win at all costs. Good behavior and fair play aren’t the message that comes across. Instead, it looks as if cheating and bad behavior are reasonable ways of getting what you want. This message is further bolstered by the fact that some of these sportspeople acquire enormous fame and wealth, making it seem they are being handsomely rewarded either despite or because of their bad behavior.What can parents do about this? They can regard sport on television as an opportunity to discuss attitudes and behavior with their children. When watching sports together, if parents see a player swearing at the referee, they can get the child’s opinion on that behavior and discuss whether a player’s skill is more important than their behavior. Ask what the child thinks the player’s contribution to the team is. Point out that no player can win a team game on their own, so it’s important for members to work well together.Another thing to focus on is what the commentators say. Do they frown on bad behavior from players, think it’s amusing or even consider it’s a good thing? What about the officials? If they let players get away with a clear foul, parents can discuss with children whether this is right and what effect it has on the game. Look too at the reactions of coaches and managers. Do they accept losing with good grace or scowl and show a bad attitude? Parents can use this to talk about attitudes to winning and losing and to remind children that both are part of sport.However, what children learn from watching sports is by no means all negative and parents should make sure they accentuate the positives too. They should emphasise to children the high reputation that well-behaved players have, not just with their teammates but also with spectators and the media. They can focus on the contribution made by such players during a game, discussing how valuable they are in the team. In the interviews after a game, point out to a child that the well-behaved sportspeople don’t gloat when they win or sulk when they lose. And parents can stress how well these people conduct themselves in their personal lives and the good work they do for others when not playing. In other words, parents should get their children to focus on the positive role models, rather than the antics of the badly behaved but often more publicized playersWhich of the following does the passage mainly discuss?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question. Anthropogenic global warming is a theory explaining today's long-term increase in the average temperature of Earth's atmosphere as an effect of human industry and agriculture. Since the latter half of the 20th century, growing banks of data and improved climate models have convinced most climate scientists that rising trends in greenhouse gas emissions are directly responsible for a rising trend in atmospheric temperature. The source of these emissions varies, consisting of a mix of gases that include methane and carbon dioxide. While some sources - such as volcanoes - are natural, their overall emissions compared with those produced by human industries, transport, and livestock have been regarded as insignificant over recent centuries. Greenhouse gases are made of molecules that absorb electromagnetic radiation, such as the light reflecting from the planet's surface, and re-emit it as heat. These gases include methane, carbon dioxide, water, and nitrous oxide. Despite making up only a small percentage of the atmosphere's mix of gases they are very important. If we had no naturally occurring greenhouse gases in the atmosphere at all, the average global temperature on Earth would be a much lower -18 degrees instead of the roughly 15 degrees Celsius we have enjoyed most of human history. Carbon dioxide levels have steadily risen over the past two centuries, thanks largely to the burning of fossil fuels for electricity general, transportation, and smelting. Current levels are approximately 415 parts per million (ppm), up from pre-industrial levels of around 280 ppm. Models vary in their predictions of further temperature increases, and depend heavily on future trends in greenhouse gas emissions. Conservative estimates by the Intergovernmental Panel on Climate Change predict an even chance of 4 degrees Celsius rise by the end of the century if current emissions trends continue. According to paragraph 4, what are the CO2-producing fossil fuels utilized for?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question. Anthropogenic global warming is a theory explaining today's long-term increase in the average temperature of Earth's atmosphere as an effect of human industry and agriculture. Since the latter half of the 20th century, growing banks of data and improved climate models have convinced most climate scientists that rising trends in greenhouse gas emissions are directly responsible for a rising trend in atmospheric temperature. The source of these emissions varies, consisting of a mix of gases that include methane and carbon dioxide. While some sources - such as volcanoes - are natural, their overall emissions compared with those produced by human industries, transport, and livestock have been regarded as insignificant over recent centuries. Greenhouse gases are made of molecules that absorb electromagnetic radiation, such as the light reflecting from the planet's surface, and re-emit it as heat. These gases include methane, carbon dioxide, water, and nitrous oxide. Despite making up only a small percentage of the atmosphere's mix of gases they are very important. If we had no naturally occurring greenhouse gases in the atmosphere at all, the average global temperature on Earth would be a much lower -18 degrees instead of the roughly 15 degrees Celsius we have enjoyed most of human history. Carbon dioxide levels have steadily risen over the past two centuries, thanks largely to the burning of fossil fuels for electricity general, transportation, and smelting. Current levels are approximately 415 parts per million (ppm), up from pre-industrial levels of around 280 ppm. Models vary in their predictions of further temperature increases, and depend heavily on future trends in greenhouse gas emissions. Conservative estimates by the Intergovernmental Panel on Climate Change predict an even chance of 4 degrees Celsius rise by the end of the century if current emissions trends continue.The word “those” in paragraph refers to _______.
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question. Anthropogenic global warming is a theory explaining today's long-term increase in the average temperature of Earth's atmosphere as an effect of human industry and agriculture. Since the latter half of the 20th century, growing banks of data and improved climate models have convinced most climate scientists that rising trends in greenhouse gas emissions are directly responsible for a rising trend in atmospheric temperature. The source of these emissions varies, consisting of a mix of gases that include methane and carbon dioxide. While some sources - such as volcanoes - are natural, their overall emissions compared with those produced by human industries, transport, and livestock have been regarded as insignificant over recent centuries. Greenhouse gases are made of molecules that absorb electromagnetic radiation, such as the light reflecting from the planet's surface, and re-emit it as heat. These gases include methane, carbon dioxide, water, and nitrous oxide. Despite making up only a small percentage of the atmosphere's mix of gases they are very important. If we had no naturally occurring greenhouse gases in the atmosphere at all, the average global temperature on Earth would be a much lower -18 degrees instead of the roughly 15 degrees Celsius we have enjoyed most of human history. Carbon dioxide levels have steadily risen over the past two centuries, thanks largely to the burning of fossil fuels for electricity general, transportation, and smelting. Current levels are approximately 415 parts per million (ppm), up from pre-industrial levels of around 280 ppm. Models vary in their predictions of further temperature increases, and depend heavily on future trends in greenhouse gas emissions. Conservative estimates by the Intergovernmental Panel on Climate Change predict an even chance of 4 degrees Celsius rise by the end of the century if current emissions trends continue.According to paragraph 3, what would happen if the Earth were bereft of natural greenhouse gases?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question. Anthropogenic global warming is a theory explaining today's long-term increase in the average temperature of Earth's atmosphere as an effect of human industry and agriculture. Since the latter half of the 20th century, growing banks of data and improved climate models have convinced most climate scientists that rising trends in greenhouse gas emissions are directly responsible for a rising trend in atmospheric temperature. The source of these emissions varies, consisting of a mix of gases that include methane and carbon dioxide. While some sources - such as volcanoes - are natural, their overall emissions compared with those produced by human industries, transport, and livestock have been regarded as insignificant over recent centuries. Greenhouse gases are made of molecules that absorb electromagnetic radiation, such as the light reflecting from the planet's surface, and re-emit it as heat. These gases include methane, carbon dioxide, water, and nitrous oxide. Despite making up only a small percentage of the atmosphere's mix of gases they are very important. If we had no naturally occurring greenhouse gases in the atmosphere at all, the average global temperature on Earth would be a much lower -18 degrees instead of the roughly 15 degrees Celsius we have enjoyed most of human history. Carbon dioxide levels have steadily risen over the past two centuries, thanks largely to the burning of fossil fuels for electricity general, transportation, and smelting. Current levels are approximately 415 parts per million (ppm), up from pre-industrial levels of around 280 ppm. Models vary in their predictions of further temperature increases, and depend heavily on future trends in greenhouse gas emissions. Conservative estimates by the Intergovernmental Panel on Climate Change predict an even chance of 4 degrees Celsius rise by the end of the century if current emissions trends continue.The word “livestock” in paragraph 2 is closest in meaning to _______.
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question. Anthropogenic global warming is a theory explaining today's long-term increase in the average temperature of Earth's atmosphere as an effect of human industry and agriculture. Since the latter half of the 20th century, growing banks of data and improved climate models have convinced most climate scientists that rising trends in greenhouse gas emissions are directly responsible for a rising trend in atmospheric temperature. The source of these emissions varies, consisting of a mix of gases that include methane and carbon dioxide. While some sources - such as volcanoes - are natural, their overall emissions compared with those produced by human industries, transport, and livestock have been regarded as insignificant over recent centuries. Greenhouse gases are made of molecules that absorb electromagnetic radiation, such as the light reflecting from the planet's surface, and re-emit it as heat. These gases include methane, carbon dioxide, water, and nitrous oxide. Despite making up only a small percentage of the atmosphere's mix of gases they are very important. If we had no naturally occurring greenhouse gases in the atmosphere at all, the average global temperature on Earth would be a much lower -18 degrees instead of the roughly 15 degrees Celsius we have enjoyed most of human history. Carbon dioxide levels have steadily risen over the past two centuries, thanks largely to the burning of fossil fuels for electricity general, transportation, and smelting. Current levels are approximately 415 parts per million (ppm), up from pre-industrial levels of around 280 ppm. Models vary in their predictions of further temperature increases, and depend heavily on future trends in greenhouse gas emissions. Conservative estimates by the Intergovernmental Panel on Climate Change predict an even chance of 4 degrees Celsius rise by the end of the century if current emissions trends continue.Where is the passage possibly taken from