[2021] Trường THPT Phù Cát - Đề thi thử THPT QG năm 2021 môn Tiếng Anh
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Mark the letter A, B, C, or D to indicate the sentence that best completes each of the following exchanges.
- John: "How about giving me a hand?"
- Tom: " "
Mark the letter A, B, C, or D to indicate the sentence that best completes each of the following exchanges.
- Nam: "Passing a university entrance exam is not difficult."
- Tuan: " "
Indicate the word that differs from the other three in the position of the primary stress: arrange, describe, happy,appear
Indicate the word that differs from the other three in the position primary stress: important, element, hospital, energy
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
Those cars are very expensive, ?
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
Some high school students take part in the handicapped.
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
I wouldn’t go there at night if I you.
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
He fell down while he towards the church.
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
Our visit to Japan was delayed my wife’s illness.
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
is someone who can reduce spending without hurting morale.
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
I agree one point with Chris: it will be hard for us to walk 80km.
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
The scientists on this project try to find the solutions to air pollution
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
We are in regular with each other by telephone or letter.
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
They've a new tower where that old building used to be.
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
In order to their goals in college, students need to invest the maximum amount of time, money, and energy in their studies.
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
A new TV show has sparked by showing the positive side of dropping out of college.
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
We were so looking forward to stretching out on the beach in the sunshine, but it the whole time we were there.
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
Environmental groups try to stop farmers from using harmful on their crops.
Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
Despite her cries, no one came to her _assistance_.
Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
I'm all in favor of ambition but I think when he says he'll be a millionaire by the time he's 25, he's simply _crying for the moon_.
Mark the letter A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
Never _punish_ your children by hitting them. This might teach them to become hitters.
Mark the letter A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
I _fell asleep_ as soon as my head hit the pillow.
Indicate the word whose underlined part differs from the other three in pronunciation: architects, cooks, stops, schools
Indicate the word whose underlined part differs from the other three in pronunciation: great, repeat , east, cheat
Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each the numbered blanks.
Most educational specialists believe that early schooling should provide children with a(n) of their own abilities and the self-confidence to use their abilities. One approach recognized by many as promoting these qualities is the Montessori method, first practised by Maria Montessori of Italy in the early 1900s. Nancy McCormick Rambusch is credited with the method in the United States, today there are over 400 Montessori schools. The method helps children learn for themselves by providing them with instructional materials and tasks that facilitate acts of discovery and manipulation. Through such exploration, children develop their sense of touch and learn how to do everyday tasks without adult assistance. benefits include improvement in language skills, and acquaintance with elements of science, music, and art.
(25)....................
Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each the numbered blanks.
Most educational specialists believe that early schooling should provide children with a(n) of their own abilities and the self-confidence to use their abilities. One approach recognized by many as promoting these qualities is the Montessori method, first practised by Maria Montessori of Italy in the early 1900s. Nancy McCormick Rambusch is credited with the method in the United States, today there are over 400 Montessori schools. The method helps children learn for themselves by providing them with instructional materials and tasks that facilitate acts of discovery and manipulation. Through such exploration, children develop their sense of touch and learn how to do everyday tasks without adult assistance. benefits include improvement in language skills, and acquaintance with elements of science, music, and art.
(26).....................
Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each the numbered blanks.
Most educational specialists believe that early schooling should provide children with a(n) of their own abilities and the self-confidence to use their abilities. One approach recognized by many as promoting these qualities is the Montessori method, first practised by Maria Montessori of Italy in the early 1900s. Nancy McCormick Rambusch is credited with the method in the United States, today there are over 400 Montessori schools. The method helps children learn for themselves by providing them with instructional materials and tasks that facilitate acts of discovery and manipulation. Through such exploration, children develop their sense of touch and learn how to do everyday tasks without adult assistance. benefits include improvement in language skills, and acquaintance with elements of science, music, and art.
(27).......................
Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each the numbered blanks.
Most educational specialists believe that early schooling should provide children with a(n) of their own abilities and the self-confidence to use their abilities. One approach recognized by many as promoting these qualities is the Montessori method, first practised by Maria Montessori of Italy in the early 1900s. Nancy McCormick Rambusch is credited with the method in the United States, today there are over 400 Montessori schools. The method helps children learn for themselves by providing them with instructional materials and tasks that facilitate acts of discovery and manipulation. Through such exploration, children develop their sense of touch and learn how to do everyday tasks without adult assistance. benefits include improvement in language skills, and acquaintance with elements of science, music, and art.
(28).....................
Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each the numbered blanks.
Most educational specialists believe that early schooling should provide children with a(n) of their own abilities and the self-confidence to use their abilities. One approach recognized by many as promoting these qualities is the Montessori method, first practised by Maria Montessori of Italy in the early 1900s. Nancy McCormick Rambusch is credited with the method in the United States, today there are over 400 Montessori schools. The method helps children learn for themselves by providing them with instructional materials and tasks that facilitate acts of discovery and manipulation. Through such exploration, children develop their sense of touch and learn how to do everyday tasks without adult assistance. benefits include improvement in language skills, and acquaintance with elements of science, music, and art.
(29)...................
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
Accidents do not occur at random. People, eighty-five years of age and older, are twenty-two times likely to die _accidentally_ than are children five to nine years old. The risk for native Americans is four times that for Asian-Americans and twice _that_ for white Americans or African-Americans. Males suffer accidents at more than twice the rate of females, in part because they are more prone to risky behavior. Alaskans are more than three times as likely as Rhode Islanders to die in an accident. Texans are twenty-one times more likely than New Jerseyites to die in a natural disaster. Among the one hundred most populous counties, Kern County, California (Bakersfield), has an accident fatality rate three times greater than Summit County, Ohio (Akron).
Accidents happen more often to poor people. Those living in poverty receive inferior medical care, are more apt to reside in houses with faulty heating and electrical systems, drive older cars with fewer safety features, and are less likely to use safety belts. People in rural areas have more accidents than city or suburban dwellers because farming is much riskier than working in a factory or office and because emergency medical services are less readily available. These two factors - low income and rural residence - may explain why the south has a higher accident rate than the north.
Which of the following is true according to the passage?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
Accidents do not occur at random. People, eighty-five years of age and older, are twenty-two times likely to die _accidentally_ than are children five to nine years old. The risk for native Americans is four times that for Asian-Americans and twice _that_ for white Americans or African-Americans. Males suffer accidents at more than twice the rate of females, in part because they are more prone to risky behavior. Alaskans are more than three times as likely as Rhode Islanders to die in an accident. Texans are twenty-one times more likely than New Jerseyites to die in a natural disaster. Among the one hundred most populous counties, Kern County, California (Bakersfield), has an accident fatality rate three times greater than Summit County, Ohio (Akron).
Accidents happen more often to poor people. Those living in poverty receive inferior medical care, are more apt to reside in houses with faulty heating and electrical systems, drive older cars with fewer safety features, and are less likely to use safety belts. People in rural areas have more accidents than city or suburban dwellers because farming is much riskier than working in a factory or office and because emergency medical services are less readily available. These two factors - low income and rural residence - may explain why the south has a higher accident rate than the north.
The word “_accidentally_” in the passage 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.
Accidents do not occur at random. People, eighty-five years of age and older, are twenty-two times likely to die _accidentally_ than are children five to nine years old. The risk for native Americans is four times that for Asian-Americans and twice _that_ for white Americans or African-Americans. Males suffer accidents at more than twice the rate of females, in part because they are more prone to risky behavior. Alaskans are more than three times as likely as Rhode Islanders to die in an accident. Texans are twenty-one times more likely than New Jerseyites to die in a natural disaster. Among the one hundred most populous counties, Kern County, California (Bakersfield), has an accident fatality rate three times greater than Summit County, Ohio (Akron).
Accidents happen more often to poor people. Those living in poverty receive inferior medical care, are more apt to reside in houses with faulty heating and electrical systems, drive older cars with fewer safety features, and are less likely to use safety belts. People in rural areas have more accidents than city or suburban dwellers because farming is much riskier than working in a factory or office and because emergency medical services are less readily available. These two factors - low income and rural residence - may explain why the south has a higher accident rate than the north.
According to the passage, which of the following groups of people in America face the highest risk of having an accident?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
Accidents do not occur at random. People, eighty-five years of age and older, are twenty-two times likely to die _accidentally_ than are children five to nine years old. The risk for native Americans is four times that for Asian-Americans and twice _that_ for white Americans or African-Americans. Males suffer accidents at more than twice the rate of females, in part because they are more prone to risky behavior. Alaskans are more than three times as likely as Rhode Islanders to die in an accident. Texans are twenty-one times more likely than New Jerseyites to die in a natural disaster. Among the one hundred most populous counties, Kern County, California (Bakersfield), has an accident fatality rate three times greater than Summit County, Ohio (Akron).
Accidents happen more often to poor people. Those living in poverty receive inferior medical care, are more apt to reside in houses with faulty heating and electrical systems, drive older cars with fewer safety features, and are less likely to use safety belts. People in rural areas have more accidents than city or suburban dwellers because farming is much riskier than working in a factory or office and because emergency medical services are less readily available. These two factors - low income and rural residence - may explain why the south has a higher accident rate than the north.
What does the word “_that_” in the passage refer to ?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
Accidents do not occur at random. People, eighty-five years of age and older, are twenty-two times likely to die _accidentally_ than are children five to nine years old. The risk for native Americans is four times that for Asian-Americans and twice _that_ for white Americans or African-Americans. Males suffer accidents at more than twice the rate of females, in part because they are more prone to risky behavior. Alaskans are more than three times as likely as Rhode Islanders to die in an accident. Texans are twenty-one times more likely than New Jerseyites to die in a natural disaster. Among the one hundred most populous counties, Kern County, California (Bakersfield), has an accident fatality rate three times greater than Summit County, Ohio (Akron).
Accidents happen more often to poor people. Those living in poverty receive inferior medical care, are more apt to reside in houses with faulty heating and electrical systems, drive older cars with fewer safety features, and are less likely to use safety belts. People in rural areas have more accidents than city or suburban dwellers because farming is much riskier than working in a factory or office and because emergency medical services are less readily available. These two factors - low income and rural residence - may explain why the south has a higher accident rate than the north.
Which of the following is NOT mentioned as a reason for a higher accident rate among the poor?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
Hibernation is typically linked to seasonal changes that limit food supplies. It is identified by metabolic suppression, a drop in body temperature and torpor- a sleep- like state- interspersed with brief bouts of wakefulness. Though certain species of fish, amphibians, birds and reptiles are known to lie _dormant_ during cold winter months, hibernation is generally associated with mammals, according to Don Wilson, a curator emeritus of vertebrate zoology at the Smithsonian National Museum of Natural History.
Endothermic mammals- “warm- blooded” animals that generate body heat internally- need a constant energy source to keep their engines running, Wilson told Live Science. And when that energy source becomes difficult to find, hibernation can help them _weather_ harsh conditions.
“During times of the year when that energy source is missing- especially in northern climates- one coping mechanism is to just shut down,” he said. “They’ll feed heavily during the few months when food is plentiful and build up fat, then go to sleep and live off their fat reserves”.
A special type of fat called “brown fat” accumulates in hibernating mammals, Wilson said. Bats that hibernate develop brown fat on their backs between their shoulder blades, but mammals can also store brown fat in _their_ bellies and elsewhere in their bodies, Wilson said.
Brown fat goes a long way because the hibernating animal draws on it very slowly, reducing their metabolism to as little as 2 percent of their normal rate, according to a 2007 study published in the Journal of Neurochemistry.
Their core body temperature is also greatly reduced. It generally hovers close to the air temperature in the animal’s den but can sometimes fall as low as 27 degrees Fahrenheit (minus 3 degrees Celcius) in Arctic ground squirrels, according to Kelly Drew, a neurochemist and professor with the Institute of Artic Biology at the University of Alaska Fairbanks.
Arctic ground squirrels’ bouts or torpor last about two or three weeks, Drew told Live Science, and the animals rouse “ pretty consistently” for about 12 to 24 hours, before resuming their winter sleep. They repeat this process for up to eight months.
But even though Arctic squirrels maintain a lower body temperature than any other hibernating mammal, the changes in their bodies overall aren’t that different from those that occur in other hibernating mammals, Drew said.
“The quality of mammalian hibernation is similar from bears to hamsters to ground squirrels,” Drew said. “The distinguishing feature is how cold they get”.
The word “_weather_” in the second paragraph 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.
Hibernation is typically linked to seasonal changes that limit food supplies. It is identified by metabolic suppression, a drop in body temperature and torpor- a sleep- like state- interspersed with brief bouts of wakefulness. Though certain species of fish, amphibians, birds and reptiles are known to lie _dormant_ during cold winter months, hibernation is generally associated with mammals, according to Don Wilson, a curator emeritus of vertebrate zoology at the Smithsonian National Museum of Natural History.
Endothermic mammals- “warm- blooded” animals that generate body heat internally- need a constant energy source to keep their engines running, Wilson told Live Science. And when that energy source becomes difficult to find, hibernation can help them _weather_ harsh conditions.
“During times of the year when that energy source is missing- especially in northern climates- one coping mechanism is to just shut down,” he said. “They’ll feed heavily during the few months when food is plentiful and build up fat, then go to sleep and live off their fat reserves”.
A special type of fat called “brown fat” accumulates in hibernating mammals, Wilson said. Bats that hibernate develop brown fat on their backs between their shoulder blades, but mammals can also store brown fat in _their_ bellies and elsewhere in their bodies, Wilson said.
Brown fat goes a long way because the hibernating animal draws on it very slowly, reducing their metabolism to as little as 2 percent of their normal rate, according to a 2007 study published in the Journal of Neurochemistry.
Their core body temperature is also greatly reduced. It generally hovers close to the air temperature in the animal’s den but can sometimes fall as low as 27 degrees Fahrenheit (minus 3 degrees Celcius) in Arctic ground squirrels, according to Kelly Drew, a neurochemist and professor with the Institute of Artic Biology at the University of Alaska Fairbanks.
Arctic ground squirrels’ bouts or torpor last about two or three weeks, Drew told Live Science, and the animals rouse “ pretty consistently” for about 12 to 24 hours, before resuming their winter sleep. They repeat this process for up to eight months.
But even though Arctic squirrels maintain a lower body temperature than any other hibernating mammal, the changes in their bodies overall aren’t that different from those that occur in other hibernating mammals, Drew said.
“The quality of mammalian hibernation is similar from bears to hamsters to ground squirrels,” Drew said. “The distinguishing feature is how cold they get”.
What is the main idea of the passage?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
Hibernation is typically linked to seasonal changes that limit food supplies. It is identified by metabolic suppression, a drop in body temperature and torpor- a sleep- like state- interspersed with brief bouts of wakefulness. Though certain species of fish, amphibians, birds and reptiles are known to lie _dormant_ during cold winter months, hibernation is generally associated with mammals, according to Don Wilson, a curator emeritus of vertebrate zoology at the Smithsonian National Museum of Natural History.
Endothermic mammals- “warm- blooded” animals that generate body heat internally- need a constant energy source to keep their engines running, Wilson told Live Science. And when that energy source becomes difficult to find, hibernation can help them _weather_ harsh conditions.
“During times of the year when that energy source is missing- especially in northern climates- one coping mechanism is to just shut down,” he said. “They’ll feed heavily during the few months when food is plentiful and build up fat, then go to sleep and live off their fat reserves”.
A special type of fat called “brown fat” accumulates in hibernating mammals, Wilson said. Bats that hibernate develop brown fat on their backs between their shoulder blades, but mammals can also store brown fat in _their_ bellies and elsewhere in their bodies, Wilson said.
Brown fat goes a long way because the hibernating animal draws on it very slowly, reducing their metabolism to as little as 2 percent of their normal rate, according to a 2007 study published in the Journal of Neurochemistry.
Their core body temperature is also greatly reduced. It generally hovers close to the air temperature in the animal’s den but can sometimes fall as low as 27 degrees Fahrenheit (minus 3 degrees Celcius) in Arctic ground squirrels, according to Kelly Drew, a neurochemist and professor with the Institute of Artic Biology at the University of Alaska Fairbanks.
Arctic ground squirrels’ bouts or torpor last about two or three weeks, Drew told Live Science, and the animals rouse “ pretty consistently” for about 12 to 24 hours, before resuming their winter sleep. They repeat this process for up to eight months.
But even though Arctic squirrels maintain a lower body temperature than any other hibernating mammal, the changes in their bodies overall aren’t that different from those that occur in other hibernating mammals, Drew said.
“The quality of mammalian hibernation is similar from bears to hamsters to ground squirrels,” Drew said. “The distinguishing feature is how cold they get”.
Which is TRUE about the Artic ground squirrel’s hibernation?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
Hibernation is typically linked to seasonal changes that limit food supplies. It is identified by metabolic suppression, a drop in body temperature and torpor- a sleep- like state- interspersed with brief bouts of wakefulness. Though certain species of fish, amphibians, birds and reptiles are known to lie _dormant_ during cold winter months, hibernation is generally associated with mammals, according to Don Wilson, a curator emeritus of vertebrate zoology at the Smithsonian National Museum of Natural History.
Endothermic mammals- “warm- blooded” animals that generate body heat internally- need a constant energy source to keep their engines running, Wilson told Live Science. And when that energy source becomes difficult to find, hibernation can help them _weather_ harsh conditions.
“During times of the year when that energy source is missing- especially in northern climates- one coping mechanism is to just shut down,” he said. “They’ll feed heavily during the few months when food is plentiful and build up fat, then go to sleep and live off their fat reserves”.
A special type of fat called “brown fat” accumulates in hibernating mammals, Wilson said. Bats that hibernate develop brown fat on their backs between their shoulder blades, but mammals can also store brown fat in _their_ bellies and elsewhere in their bodies, Wilson said.
Brown fat goes a long way because the hibernating animal draws on it very slowly, reducing their metabolism to as little as 2 percent of their normal rate, according to a 2007 study published in the Journal of Neurochemistry.
Their core body temperature is also greatly reduced. It generally hovers close to the air temperature in the animal’s den but can sometimes fall as low as 27 degrees Fahrenheit (minus 3 degrees Celcius) in Arctic ground squirrels, according to Kelly Drew, a neurochemist and professor with the Institute of Artic Biology at the University of Alaska Fairbanks.
Arctic ground squirrels’ bouts or torpor last about two or three weeks, Drew told Live Science, and the animals rouse “ pretty consistently” for about 12 to 24 hours, before resuming their winter sleep. They repeat this process for up to eight months.
But even though Arctic squirrels maintain a lower body temperature than any other hibernating mammal, the changes in their bodies overall aren’t that different from those that occur in other hibernating mammals, Drew said.
“The quality of mammalian hibernation is similar from bears to hamsters to ground squirrels,” Drew said. “The distinguishing feature is how cold they get”.
Where on the hibernating bat’s body is brown fat mostly likely to be found?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
Hibernation is typically linked to seasonal changes that limit food supplies. It is identified by metabolic suppression, a drop in body temperature and torpor- a sleep- like state- interspersed with brief bouts of wakefulness. Though certain species of fish, amphibians, birds and reptiles are known to lie _dormant_ during cold winter months, hibernation is generally associated with mammals, according to Don Wilson, a curator emeritus of vertebrate zoology at the Smithsonian National Museum of Natural History.
Endothermic mammals- “warm- blooded” animals that generate body heat internally- need a constant energy source to keep their engines running, Wilson told Live Science. And when that energy source becomes difficult to find, hibernation can help them _weather_ harsh conditions.
“During times of the year when that energy source is missing- especially in northern climates- one coping mechanism is to just shut down,” he said. “They’ll feed heavily during the few months when food is plentiful and build up fat, then go to sleep and live off their fat reserves”.
A special type of fat called “brown fat” accumulates in hibernating mammals, Wilson said. Bats that hibernate develop brown fat on their backs between their shoulder blades, but mammals can also store brown fat in _their_ bellies and elsewhere in their bodies, Wilson said.
Brown fat goes a long way because the hibernating animal draws on it very slowly, reducing their metabolism to as little as 2 percent of their normal rate, according to a 2007 study published in the Journal of Neurochemistry.
Their core body temperature is also greatly reduced. It generally hovers close to the air temperature in the animal’s den but can sometimes fall as low as 27 degrees Fahrenheit (minus 3 degrees Celcius) in Arctic ground squirrels, according to Kelly Drew, a neurochemist and professor with the Institute of Artic Biology at the University of Alaska Fairbanks.
Arctic ground squirrels’ bouts or torpor last about two or three weeks, Drew told Live Science, and the animals rouse “ pretty consistently” for about 12 to 24 hours, before resuming their winter sleep. They repeat this process for up to eight months.
But even though Arctic squirrels maintain a lower body temperature than any other hibernating mammal, the changes in their bodies overall aren’t that different from those that occur in other hibernating mammals, Drew said.
“The quality of mammalian hibernation is similar from bears to hamsters to ground squirrels,” Drew said. “The distinguishing feature is how cold they get”.
According to the passage, the metabolism in hibernating animals is reduced by .
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
Hibernation is typically linked to seasonal changes that limit food supplies. It is identified by metabolic suppression, a drop in body temperature and torpor- a sleep- like state- interspersed with brief bouts of wakefulness. Though certain species of fish, amphibians, birds and reptiles are known to lie _dormant_ during cold winter months, hibernation is generally associated with mammals, according to Don Wilson, a curator emeritus of vertebrate zoology at the Smithsonian National Museum of Natural History.
Endothermic mammals- “warm- blooded” animals that generate body heat internally- need a constant energy source to keep their engines running, Wilson told Live Science. And when that energy source becomes difficult to find, hibernation can help them _weather_ harsh conditions.
“During times of the year when that energy source is missing- especially in northern climates- one coping mechanism is to just shut down,” he said. “They’ll feed heavily during the few months when food is plentiful and build up fat, then go to sleep and live off their fat reserves”.
A special type of fat called “brown fat” accumulates in hibernating mammals, Wilson said. Bats that hibernate develop brown fat on their backs between their shoulder blades, but mammals can also store brown fat in _their_ bellies and elsewhere in their bodies, Wilson said.
Brown fat goes a long way because the hibernating animal draws on it very slowly, reducing their metabolism to as little as 2 percent of their normal rate, according to a 2007 study published in the Journal of Neurochemistry.
Their core body temperature is also greatly reduced. It generally hovers close to the air temperature in the animal’s den but can sometimes fall as low as 27 degrees Fahrenheit (minus 3 degrees Celcius) in Arctic ground squirrels, according to Kelly Drew, a neurochemist and professor with the Institute of Artic Biology at the University of Alaska Fairbanks.
Arctic ground squirrels’ bouts or torpor last about two or three weeks, Drew told Live Science, and the animals rouse “ pretty consistently” for about 12 to 24 hours, before resuming their winter sleep. They repeat this process for up to eight months.
But even though Arctic squirrels maintain a lower body temperature than any other hibernating mammal, the changes in their bodies overall aren’t that different from those that occur in other hibernating mammals, Drew said.
“The quality of mammalian hibernation is similar from bears to hamsters to ground squirrels,” Drew said. “The distinguishing feature is how cold they get”.
What does the word “_their_” in paragraph 4 refer to ?
Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
Hibernation is typically linked to seasonal changes that limit food supplies. It is identified by metabolic suppression, a drop in body temperature and torpor- a sleep- like state- interspersed with brief bouts of wakefulness. Though certain species of fish, amphibians, birds and reptiles are known to lie _dormant_ during cold winter months, hibernation is generally associated with mammals, according to Don Wilson, a curator emeritus of vertebrate zoology at the Smithsonian National Museum of Natural History.
Endothermic mammals- “warm- blooded” animals that generate body heat internally- need a constant energy source to keep their engines running, Wilson told Live Science. And when that energy source becomes difficult to find, hibernation can help them _weather_ harsh conditions.
“During times of the year when that energy source is missing- especially in northern climates- one coping mechanism is to just shut down,” he said. “They’ll feed heavily during the few months when food is plentiful and build up fat, then go to sleep and live off their fat reserves”.
A special type of fat called “brown fat” accumulates in hibernating mammals, Wilson said. Bats that hibernate develop brown fat on their backs between their shoulder blades, but mammals can also store brown fat in _their_ bellies and elsewhere in their bodies, Wilson said.
Brown fat goes a long way because the hibernating animal draws on it very slowly, reducing their metabolism to as little as 2 percent of their normal rate, according to a 2007 study published in the Journal of Neurochemistry.
Their core body temperature is also greatly reduced. It generally hovers close to the air temperature in the animal’s den but can sometimes fall as low as 27 degrees Fahrenheit (minus 3 degrees Celcius) in Arctic ground squirrels, according to Kelly Drew, a neurochemist and professor with the Institute of Artic Biology at the University of Alaska Fairbanks.
Arctic ground squirrels’ bouts or torpor last about two or three weeks, Drew told Live Science, and the animals rouse “ pretty consistently” for about 12 to 24 hours, before resuming their winter sleep. They repeat this process for up to eight months.
But even though Arctic squirrels maintain a lower body temperature than any other hibernating mammal, the changes in their bodies overall aren’t that different from those that occur in other hibernating mammals, Drew said.
“The quality of mammalian hibernation is similar from bears to hamsters to ground squirrels,” Drew said. “The distinguishing feature is how cold they get”.
The word “_dormant_” in the first paragraph 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.
Hibernation is typically linked to seasonal changes that limit food supplies. It is identified by metabolic suppression, a drop in body temperature and torpor- a sleep- like state- interspersed with brief bouts of wakefulness. Though certain species of fish, amphibians, birds and reptiles are known to lie _dormant_ during cold winter months, hibernation is generally associated with mammals, according to Don Wilson, a curator emeritus of vertebrate zoology at the Smithsonian National Museum of Natural History.
Endothermic mammals- “warm- blooded” animals that generate body heat internally- need a constant energy source to keep their engines running, Wilson told Live Science. And when that energy source becomes difficult to find, hibernation can help them _weather_ harsh conditions.
“During times of the year when that energy source is missing- especially in northern climates- one coping mechanism is to just shut down,” he said. “They’ll feed heavily during the few months when food is plentiful and build up fat, then go to sleep and live off their fat reserves”.
A special type of fat called “brown fat” accumulates in hibernating mammals, Wilson said. Bats that hibernate develop brown fat on their backs between their shoulder blades, but mammals can also store brown fat in _their_ bellies and elsewhere in their bodies, Wilson said.
Brown fat goes a long way because the hibernating animal draws on it very slowly, reducing their metabolism to as little as 2 percent of their normal rate, according to a 2007 study published in the Journal of Neurochemistry.
Their core body temperature is also greatly reduced. It generally hovers close to the air temperature in the animal’s den but can sometimes fall as low as 27 degrees Fahrenheit (minus 3 degrees Celcius) in Arctic ground squirrels, according to Kelly Drew, a neurochemist and professor with the Institute of Artic Biology at the University of Alaska Fairbanks.
Arctic ground squirrels’ bouts or torpor last about two or three weeks, Drew told Live Science, and the animals rouse “ pretty consistently” for about 12 to 24 hours, before resuming their winter sleep. They repeat this process for up to eight months.
But even though Arctic squirrels maintain a lower body temperature than any other hibernating mammal, the changes in their bodies overall aren’t that different from those that occur in other hibernating mammals, Drew said.
“The quality of mammalian hibernation is similar from bears to hamsters to ground squirrels,” Drew said. “The distinguishing feature is how cold they get”.
How much can the Artic ground squirrel’s body temperature reduce to?
Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.
The package _containing__books and records__were__delivered_ last week.
Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.
Helen _likes_ listening to music, _going_ to the cinema, _to chat_ on the phone _and_ going shopping.
Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.
It _is said_ that _these_ good life skills will make young people _become_ more _confidential_.
Mark the letter A, B, C, or D to indicate the sentence that is closest in meaning to each of the following questions.
If you practise harder, you will have better results.
Mark the letter A, B, C, or D to indicate the sentence that is closest in meaning to each of the following questions.
"Do you still remember Darin, our childhood friend?" Mary asked me.
Mark the letter A, B, C, or D to indicate the sentence that is closest in meaning to each of the following questions.
I'm sure Luisa was very disappointed when she failed the exam.
Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences in the following questions.
Put your coat on. You will get cold.
Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences in the following questions.
We arrived at airport. We realized our passports were still at home.
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